Regents Professor
Franklin Professor

Contact Info

Office:
473
Phone Number:
Lab Office:
475, 479, 483, 485
Other Affiliations:
Education:
  • B. S. Chemistry, Furman University, 1976
  • Ph. D. Physical Chemistry, Rice University, 1982
Research Interests:

Our research program uses lasers, electrical discharges and pulsed supersonic molecular beams to produce a variety of unusual molecules, ions, metal complexes and atomic or molecular clusters.  The extreme conditions of the "synthesis" processes employed make it possible to produce strange molecular aggregates including metal atom nanoclusters, novel organometallic complexes (metal benzene sandwiches, metal-fullerenes), metal ions "solvated" by 1-30 water molecules, proton-bound dimers, or carbocations.  These systems test fundamental concepts of chemical bonding and provide models for metal-metal or metal-ligand bonding, metal ion solvation and metal-adsorbate interactions, and additionally provide specific examples of proton-transfer or organic reaction intermediates as well as interstellar molecules.  The ions or clusters produced are detected and size-selected with a specially-designed time-of-flight mass spectrometer and studied with UV-visible or infrared laser spectroscopy.  Computational chemistry methods are employed to complement the experimental work.  The combined spectroscopy measurements and computational work provides definitive answers about molecular structure, electronic structure, bonding energetics and the reactivity of these systems.

Selected Publications:

2017-2018

Marks, J. H., Ward, T. B., & Duncan, M. A. (2018). Photodissociation of Manganese Oxide Cluster Cations.. J Phys Chem A. doi:10.1021/acs.jpca.8b01441

Wagner, J. P., McDonald, D. C., & Duncan, M. A. (2018). An Argon-Oxygen Covalent Bond in the ArOH+Molecular Ion.. Angew Chem Int Ed Engl. doi:10.1002/anie.201802093

Dillinger, S., Klein, M. P., Steiner, A., McDonald, D. C., Duncan, M. A., Kappes, M. M., & Niedner-Schatteburg, G. (2018). Cryo IR Spectroscopy of N2and H2on Ru8+: The Effect of N2on the H-Migration.. J Phys Chem Lett, 9(4), 914-918. doi:10.1021/acs.jpclett.8b00093

McDonald, D. C., Wagner, J. P., & Duncan, M. A. (2018). Mid/near infrared spectroscopy of the H 2 Cl + Ar cation complex compared to the predictions of anharmonic theory. Chemical Physics Letters, 691, 51-55. doi:10.1016/j.cplett.2017.10.056

Wagner, J. P., McDonald, D. C., & Duncan, M. A. (2018). Infrared Spectroscopy of the Astrochemically Relevant Protonated Formaldehyde Dimer.. J Phys Chem A, 122(1), 192-198. doi:10.1021/acs.jpca.7b10573

Wagner, J. P., McDonald, D. C., & Duncan, M. A. (2017). Near-infrared spectroscopy and anharmonic theory of the H 2 O + Ar 1,2  cation complexes. The Journal of Chemical Physics, 147(10), 104302. doi:10.1063/1.4998419

Mauney, D. T., Maner, J. A., & Duncan, M. A. (2017). IR Spectroscopy of Protonated Acetylacetone and Its Water Clusters: Enol–Keto Tautomers and Ion→Solvent Proton Transfer. The Journal of Physical Chemistry A, 121(37), 7059-7069. doi:10.1021/acs.jpca.7b07180

Wagner, J. P., Bartlett, M. A., Allen, W. D., & Duncan, M. A. (2017). Tunneling Isomerizations on the Potential Energy Surfaces of Formaldehyde and Methanol Radical Cations. ACS Earth and Space Chemistry, 1(6), 361-367. doi:10.1021/acsearthspacechem.7b00068

Ward, T. B., Miliordos, E., Carnegie, P. D., Xantheas, S. S., & Duncan, M. A. (2017). Ortho-para interconversion in cation-water complexes: The case of V+(H2O) and Nb+( H2O) clusters. JOURNAL OF CHEMICAL PHYSICS, 146(22). doi:10.1063/1.4984826

Maner, J. A., Mauney, D. T., & Duncan, M. A. (2017). Velocity map ion imaging study of Ar-2(+) photodissociation. CHEMICAL PHYSICS LETTERS, 671, 182-185. doi:10.1016/j.cplett.2017.01.042

Garza-Galindo, R., Castro, M., & Duncan, M. A. (2012). Theoretical Study of Nascent Hydration in the Fe+(H2O)(n) System. JOURNAL OF PHYSICAL CHEMISTRY A, 116(8), 1906-1913. doi:10.1021/jp2117533

Duncan, M. A. (n.d.). Laser Vaporization Cluster Sources.

Bandyopadhyay, B., & Duncan, M. A. (2012). Infrared spectroscopy of V2+(H2O) complexes. CHEMICAL PHYSICS LETTERS, 530, 10-15. doi:10.1016/j.cplett.2012.01.048

Brathwaite, A. D., & Duncan, M. A. (2012). Infrared Spectroscopy of Si(CO)(n)(+) Complexes: Evidence for Asymmetric Coordination. JOURNAL OF PHYSICAL CHEMISTRY A, 116(5), 1375-1382. doi:10.1021/jp211578t

Ricks, A. M., Reed, Z. E., & Duncan, M. A. (2011). Infrared spectroscopy of mass-selected metal carbonyl cations. JOURNAL OF MOLECULAR SPECTROSCOPY, 266(2), 63-74. doi:10.1016/j.jms.2011.03.006

Brathwaite, A. D., Reed, Z. D., & Duncan, M. A. (2011). Infrared Photodissociation Spectroscopy of Copper Carbonyl Cations. JOURNAL OF PHYSICAL CHEMISTRY A, 115(38), 10461-10469. doi:10.1021/jp206102z

2016

McDonald, D. C. ; Mauney, D. T. ; Leicht, D. ; Marks, J. H. ; Tan, J. A. ; Kuo, J. - L. ; Duncan, M. A. Communication: Trapping a proton in argon: Spectroscopy and theory of the proton-bound argon dimer and its solvation. The Journal of Chemical Physics 2016, 145, 231101.

Ward, T. B. ; Carnegie, P. D. ; Duncan, M. A. Infrared spectroscopy of the Ti(H2O)Ar+ ion–molecule complex: Electronic state switching induced by argon. Chem. Phys. Lett. 2016, 654, 1 - 5.

Leicht, D. ; Cheng, T. C. ; Duncan, M. A. Infrared spectroscopy of the glyoxal radical cation: The charge dependence of internal rotation. Chem. Phys. Lett. 2016, 643, 89 - 92.

2015

Mosley, J. D. ; Young, J. W. ; Huang, M. ; McCoy, A. B. ; Duncan, M. A. Infrared spectroscopy of the methanol cation and its methylene-oxonium isomer. J. Chem. Phys. 2015, 142, 114301.

Maner, J. A. ; Mauney, D. T. ; Duncan, M. A. Imaging Charge Transfer in a Cation−π System: Velocity-Map Imaging of Ag + (benzene) Photodissociation. J. Phys. Chem. Lett. 2015, 6, 4493 - 4498.

Assefa, M. K. ; Devera, J. L. ; Brathwaite, A. D. ; Mosley, J. D. ; Duncan, M. A. Vibrational scaling factors for transition metal carbonyls. Chem. Phys. Lett. 2015, 640, 175 - 179.

Akin, S. T. ; Liu, X. ; Duncan, M. A. Laser synthesis and spectroscopy of acetonitrile/silver nanoparticles. Chem. Phys. Lett. 2015, 640, 161 - 164.

Mosley, J. D. ; Young, J. W. ; Duncan, M. A. Infrared detection of the 1,3-dimethyl cyclopentadienyl cation, an isomer of protonated toluene. Int. J. Mass Spectrom. 2015, 378, 322 - 327.

Brathwaite, A. D. ; Ward, T. B. ; Walters, R. S. ; Duncan, M. A. Cation−π and CH−π Interactions in the Coordination and Solvation of Cu + (acetylene) n Complexes. J. Phys. Chem. A 2015, 119, 5658 - 5667.

2014

Brathwaite, A. D. ; Maner, J. A. ; Duncan, M. A. Testing the Limits of the 18-Electron Rule: The Gas-Phase Carbonyls of Sc + and Y +. Inorg. Chem. 2014, 53, 1166 - 1169.

Ayers, T. M. ; Akin, S. T. ; Dibble, C. J. ; Duncan, M. A. Laser Desorption Time-of-Flight Mass Spectrometry of Inorganic Nanoclusters: An Experiment for Physical Chemistry or Advanced Instrumentation Laboratories. J. Chem. Educ. 2014, 91, 291 - 296.

Luo, S. ; Dibble, C. J. ; Duncan, M. A. ; Truhlar, D. G. Ligand-Mediated Ring → Cube Transformation in a Catalytic Subnanocluster: Co 4 O 4 (MeCN) n with n = 1–6. J. Phys. Chem. Lett. 2014, 5, 2528 - 2532.

Mosley, J. D. ; Young, J. W. ; Duncan, M. A. Infrared spectroscopy of the acetyl cation and its protonated ketene isomer. J. Chem. Phys. 2014, 141, 024306.

Mosley, J. D. ; Young, J. W. ; Agarwal, J. ; Schaefer, H. F. ; v. Schleyer, P. R. ; Duncan, M. A. Structural Isomerization of the Gas-Phase 2-Norbornyl Cation Revealed with Infrared Spectroscopy and Computational Chemistry. Angewandte Chemie 2014, 126, 5998 - 6001.

Reishus, K. N. ; Brathwaite, A. D. ; Mosley, J. D. ; Duncan, M. A. Coordination versus Solvation in Al + (benzene) n Complexes Studied with Infrared Spectroscopy. J. Phys. Chem. A 2014, 118, 7516 - 7525.

2013

Bandyopadhyay, B. ; Reishus, K. N. ; Duncan, M. A. Infrared Spectroscopy of Solvation in Small Zn + (H 2 O) n Complexes. The Journal of Physical Chemistry A 2013, 117, 7794 - 7803.

Ricks, A. M. ; Brathwaite, A. D. ; Duncan, M. A. IR Spectroscopy of Gas Phase V(CO 2 ) n + Clusters: Solvation-Induced Electron Transfer and Activation of CO 2. The Journal of Physical Chemistry A 2013, 117, 11490 - 11498.

Brathwaite, A. D. ; Ricks, A. M. ; Duncan, M. A. Infrared Photodissociation Spectroscopy of Vanadium Oxide–Carbonyl Cations. The Journal of Physical Chemistry A 2013, 117, 13435-13442.

2012

Duncan, M. A. Infrared Laser Spectroscopy of Mass-Selected Carbocations. The Journal of Physical Chemistry A 2012, 116, 11477 - 11491.

Duncan, M. A. Invited Review Article: Laser vaporization cluster sources. Rev. Sci. Instrum. 2012, 83, 041101.

Cheng, T. C. ; Bandyopadhyay, B. ; Mosley, J. D. ; Duncan, M. A. IR Spectroscopy of Protonation in Benzene–Water Nanoclusters: Hydronium, Zundel, and Eigen at a Hydrophobic Interface. Journal of the American Chemical Society 2012, 134, 13046 - 13055.

2010

Reed, Z. D. ; Duncan, M. A. Infrared Spectroscopy and Structures of Manganese Carbonyl Cations, Mn(CO)n+ (n=1-9). Journal of the American Society for Mass Spectrometry 2010, 21, 739-749.

Kostko, O. ; Leone, S. R. ; Duncan, M. A. ; Ahmed, M. Determination of Ionization Energies of Small Silicon Clusters with Vacuum Ultraviolet Radiation. Journal of Physical Chemistry A 2010, 114, 3176-3181.

Ricks, A. M. ; Douberly, G. E. ; Schleyer, P. V. ; Duncan, M. A. Communications: Infrared spectroscopy of gas phase C3H3+ ions: The cyclopropenyl and propargyl cations. Journal of Chemical Physics 2010, 132, 051101.

Cheng, T. C. ; Bandyopadyay, B. ; Wang, Y. M. ; Carter, S. ; Braams, B. J. ; Bowman, J. M. ; Duncan, M. A. Shared-Proton Mode Lights up the Infrared Spectrum of Fluxional Cations H5+ and D5+. Journal of Physical Chemistry Letters 2010, 1, 758-762.

Douberly, G. E. ; Walters, R. S. ; Cui, J. ; Jordan, K. D. ; Duncan, M. A. Infrared Spectroscopy of Small Protonated Water Clusters, H+(H2O)n (n=2-5): Isomers, Argon Tagging, and Deuteration. Journal of Physical Chemistry A 2010, 114, 4570-4579.

Bandyopadhyay, B. ; Cheng, T. C. ; Duncan, M. A. Proton sharing in hydronium–nitrogen clusters probed with infrared spectroscopy. Int J Mass Spectrom 2010, 297, 124 - 130.

Ricks, A. M. ; Gagliardi, L. ; Duncan, M. A. Infrared Spectroscopy of Extreme Coordination: The Carbonyls of U+ and UO2+. J Am Chem Soc 2010, 132, 15905-15907.

2009

Ricks, A. M. ; Douberly, G. E. ; Schleyer, P. V. R. ; Duncan, M. A. Infrared spectroscopy of protonated ethylene: The nature of proton binding in the non-classical structure. Chemical Physics Letters 2009, 480, 17-20.

Ricks, A. M. ; Douberly, G. E. ; Duncan, M. A. Infrared spectroscopy of the protonated nitrogen dimer: The complexity of shared proton vibrations. Journal of Chemical Physics 2009, 131, -.

Ricks, A. M. ; Douberly, G. E. ; Duncan, M. A. The Infrared Spectrum of Protonated Naphthalene and Its Relevance for the Unidentified Infrared Bands. Astrophysical Journal 2009, 702, 301-306.

Ricks, A. M. ; Douberly, G. E. ; Duncan, M. A. IR photodissociation spectroscopy of O4+, O6+ and O8+ cluster ions. International Journal of Mass Spectrometry 2009, 283, 69-76.

Ricks, A. M. ; Reed, Z. D. ; Duncan, M. A. Seven-Coordinate Homoleptic Metal Carbonyls in the Gas Phase. Journal of the American Chemical Society 2009, 131, 9176-+.

Douberly, G. E. ; Ricks, A. M. ; Duncan, M. A. Infrared Spectroscopy of Perdeuterated Protonated Water Clusters in the Vicinity of the Clathrate Cage. Journal of Physical Chemistry A 2009, 113, 8449-8453.

Carnegie, P. D. ; McCoy, A. B. ; Duncan, M. A. IR Spectroscopy and Theory of Cu+(H2O)Ar2 and Cu+(D2O)Ar2 in the O-H (O-D) Stretching Region: Fundamentals and Combination Bands. Journal of Physical Chemistry A 2009, 113, 4849-4854.

Ricks, A. M. ; Bakker, J. M. ; Douberly, G. E. ; Duncan, M. A. Infrared Spectroscopy and Structures of Cobalt Carbonyl Cations, Co(CO)n+ (n=1-9). Journal of Physical Chemistry A 2009, 113, 4701-4708.

2008

Molek, K. S. ; Anfuso-Cleary, C. ; Duncan, M. A. Photodissociation of iron oxide cluster cations. Journal of Physical Chemistry A 2008, 112, 9238-9247.

Duncan, M. A. Structures, energetics and spectroscopy of gas phase transition metal ion-benzene complexes. International Journal of Mass Spectrometry 2008, 272, 99-118.

Douberly, G. E. ; Ricks, A. M. ; Ticknor, B. W. ; Mckee, W. C. ; Schleyer, P. V. R. ; Duncan, M. A. Infrared photodissociation spectroscopy of protonated acetylene and its clusters. Journal of Physical Chemistry A 2008, 112, 1897-1906.

Velasquez, J. ; Njegic, B. ; Gordon, M. S. ; Duncan, M. A. IR photodissociation spectroscopy and theory of Au+(CO)(n) complexes: Nonclassical carbonyls in the gas phase. Journal of Physical Chemistry A 2008, 112, 1907-1913.

Douberly, G. E. ; Ricks, A. M. ; Schleyer, P. V. R. ; Duncan, M. A. Infrared spectroscopy of gas phase benzenium ions: Protonated benzene and protonated toluene, from 750 to 3400 cm(-1). Journal of Physical Chemistry A 2008, 112, 4869-4874.

Reed, Z. A. ; Duncan, M. A. Photodissociation of yttrium and lanthanum oxide cluster cations. Journal of Physical Chemistry A 2008, 112, 5354-5362.

Carnegie, P. D. ; Bandyopadhyay, B. ; Duncan, M. A. Infrared spectroscopy of Cr+(H2O) and Cr2+(H2O): The role of charge in cation hydration. Journal of Physical Chemistry A 2008, 112, 6237-6243.

Douberly, G. E. ; Ricks, A. M. ; Schleyer, P. V. R. ; Duncan, M. A. Infrared spectroscopy of gas phase C3H5+: The allyl and 2-propenyl cations. Journal of Chemical Physics 2008, 128, -.

Scott, A. C. ; Buchanan, J. W. ; Flynn, N. D. ; Duncan, M. A. Photodissociation studies of calcium-coronene and calcium-pyrene cation clusters. International Journal of Mass Spectrometry 2008, 269, 55-61.

Douberly, G. E. ; Ricks, A. M. ; Ticknor, B. W. ; Duncan, M. A. Structure of protonated carbon dioxide clusters: Infrared photodissociation spectroscopy and ab initio calculations. Journal of Physical Chemistry A 2008, 112, 950-959.

Ticknor, B. W. ; Bandyopadhyay, B. ; Duncan, M. A. Photodissociation of Noble Metal-Doped Carbon Clusters. Journal of Physical Chemistry A 2008, 112, 12355-12366.

Velasquez, J. ; Duncan, M. A. IR photodissociation spectroscopy of gas phase Pt+(CO)(n) (n=4-6). Chemical Physics Letters 2008, 461, 28-32.

Douberly, G. E. ; Ricks, A. M. ; Ticknor, B. W. ; Duncan, M. A. The structure of protonated acetone and its dimer: infrared photodissociation spectroscopy from 800 to 4000 cm(-1). Physical Chemistry Chemical Physics 2008, 10, 77-79.

2007

Scott, A. C. ; Buchanan, J. W. ; Flynn, N. D. ; Duncan, M. A. Photodissociation of iron-pyrene and iron-perylene cation complexes. International Journal of Mass Spectrometry 2007, 266, 149-155.

Douberly, G. E. ; Ricks, A. M. ; Ticknor, B. W. ; Schleyer, P. V. R. ; Duncan, M. A. Infrared Spectroscopy of the tert-butyl cation in the gas phase. Journal of the American Chemical Society 2007, 129, 13782-+.

Scott, A. C. ; Foster, N. R. ; Grieves, G. A. ; Duncan, M. A. Photodissociation of lanthanide metal cation complexes with cyclooctatetraene. International Journal of Mass Spectrometry 2007, 263, 171-178.

Pillai, E. D. ; Jaeger, T. D. ; Duncan, M. A. IR spectroscopy of Nb+(N-2)(n) complexes: Coordination, structures, and spin states. Journal of the American Chemical Society 2007, 129, 2297-2307.

Kasalova, V. ; Allen, W. D. ; Schaefer, H. F. ; Pillai, E. D. ; Duncan, M. A. Model systems for probing metal cation hydration: The V+(H2O) and ArV+(H2O) complexes. Journal of Physical Chemistry A 2007, 111, 7599-7610.

Molek, K. S. ; Reed, Z. D. ; Ricks, A. M. ; Duncan, M. A. Photodissociation of chromium oxide cluster cations. Journal of Physical Chemistry A 2007, 111, 8080-8089.

Belau, L. ; Wheeler, S. E. ; Ticknor, B. W. ; Ahmed, M. ; Leone, S. R. ; Allen, W. D. ; Schaefer, H. F. ; Duncan, M. A. Ionization thresholds of small carbon clusters: Tunable VUV experiments and theory. Journal of the American Chemical Society 2007, 129, 10229-10243.

2006

Manning, T. J. ; Olsen, K. ; Hardin, L. ; Purcell, J. ; Ayers, T. M. ; Duncan, M. A. ; Phillips, D. Extensive ozonation of C-60: Degradation or polymerization?. Ozone-Science & Engineering 2006, 28, 177-180.

Velasquez, J. ; Pillai, E. D. ; Carnegie, P. D. ; Duncan, M. A. IR spectroscopy of M+(acetone) complexes (M = Mg, Al, Ca): Cation-carbonyl binding interactions. Journal of Physical Chemistry A 2006, 110, 2325-2330.

Jaeger, J. B. ; Jaeger, T. D. ; Duncan, M. A. Photodissociation of metal-silicon clusters: Encapsulated versus surface-bound metal. Journal of Physical Chemistry A 2006, 110, 9310-9314.

Vaden, T. D. ; Lisy, J. M. ; Carnegie, P. D. ; Pillai, E. D. ; Duncan, M. A. Infrared spectroscopy of the Li+(H2O)Ar complex: the role of internal energy and its dependence on ion preparation. Physical Chemistry Chemical Physics 2006, 8, 3078-3082.

2005

Ayers, T. M. ; Westlake, B. C. ; Preda, D. V. ; Scott, L. T. ; Duncan, M. A. Laser plasma production of metal-corannulene ion-molecule complexes. Organometallics 2005, 24, 4573-4578.

Molek, K. S. ; Jaeger, T. D. ; Duncan, M. A. Photodissociation of vanadium, niobium, and tantalum oxide cluster cations. Journal of Chemical Physics 2005, 123, -.

Walters, R. S. ; Pillai, E. D. ; Duncan, M. A. Solvation dynamics in Ni+(H2O)(n) clusters probed with infrared spectroscopy. Journal of the American Chemical Society 2005, 127, 16599-16610.

Jaeger, J. B. ; Pillai, E. D. ; Jaeger, T. D. ; Duncan, M. A. Ultraviolet and infrared photodissociation of Si+(C6H6)(n) and Si+(C6H6)(n)Ar clusters. Journal of Physical Chemistry A 2005, 109, 2801-2808.

Ticknor, B. W. ; Duncan, M. A. Photodissociation of silicon carbide cluster cations. Chemical Physics Letters 2005, 405, 214-219.

Jaeger, T. D. ; Duncan, M. A. Photodissociation of M+(benzene)(x) complexes (M = Ti, V, Ni) at 355 nm. International Journal of Mass Spectrometry 2005, 241, 165-171.

Headrick, J. M. ; Diken, E. G. ; Walters, R. S. ; Hammer, N. I. ; Christie, R. A. ; Cui, J. ; Myshakin, E. M. ; Duncan, M. A. ; Johnson, M. A. ; Jordan, K. D. Spectral signatures of hydrated proton vibrations in water clusters. Science 2005, 308, 1765-1769.

Walters, R. S. ; Schleyer, P. V. ; Corminboeuf, C. ; Duncan, M. A. Structural trends in transition metal cation-acetylene complexes revealed through the C-H stretching fundamentals. Journal of the American Chemical Society 2005, 127, 1100-1101.

Walters, R. S. ; Pillai, E. D. ; Schleyer, P. V. ; Duncan, M. A. Vibrational spectroscopy and structures of Ni+(C2H2)(n) (n=1-4) complexes. Journal of the American Chemical Society 2005, 127, 17030-17042.

Walker, N. R. ; Walters, R. S. ; Tsai, M. K. ; Jordan, K. D. ; Duncan, M. A. Infrared photodissociation spectroscopy of Mg+(H2O)Ar-n complexes: Isomers in progressive microsolvation. Journal of Physical Chemistry A 2005, 109, 7057-7067.

Pillai, E. D. ; Jaeger, T. D. ; Duncan, M. A. IR spectroscopy and density functional theory of small V+(N-2)(n) complexes. Journal of Physical Chemistry A 2005, 109, 3521-3526.

Jaeger, T. D. ; Duncan, M. A. Vibrational spectroscopy of Ni+(benzene)(n) complexes in the gas phase. Journal of Physical Chemistry A 2005, 109, 3311-3317.

Pillai, E. D. ; Molek, K. S. ; Duncan, M. A. Growth and photodissociation of U+(C6H6)(n) (n=1-3) and UOm+ (C6H6) (m=1, 2) complexes. Chemical Physics Letters 2005, 405, 247-251.

Walker, N. R. ; Walters, R. S. ; Duncan, M. A. Frontiers in the infrared spectroscopy of gas phase metal ion complexes. New Journal of Chemistry 2005, 29, 1495-1503.

2004

Jaeger, T. D. ; van Heijnsbergen, D. ; Klippenstein, S. J. ; von Helden, G. ; Meijer, G. ; Duncan, M. A. Vibrational spectroscopy and density functional theory of transition-metal ion-benzene and dibenzene complexes in the gas phase. Journal of the American Chemical Society 2004, 126, 10981-10991.

Ayers, T. M. ; Westlake, B. C. ; Duncan, M. A. Laser plasma production of metal and metal compound complexes with polycyclic aromatic hydrocarbons. Journal of Physical Chemistry A 2004, 108, 9805-9813.

Shin, J. W. ; Hammer, N. I. ; Diken, E. G. ; Johnson, M. A. ; Walters, R. S. ; Jaeger, T. D. ; Duncan, M. A. ; Christie, R. A. ; Jordan, K. D. Infrared signature of structures associated with the H+(H2O)(n) (n=6 to 27) clusters. Science 2004, 304, 1137-1140.

Walker, N. R. ; Walters, R. S. ; Duncan, M. A. Infrared photodissociation spectroscopy of V+(CO2)(n) and V+(CO2)(n)Ar complexes. Journal of Chemical Physics 2004, 120, 10037-10045.

Jaeger, J. B. ; Jaeger, T. D. ; Brinkmann, N. R. ; Schaefer, H. F. ; Duncan, M. A. Infrared photodissociation spectroscopy of Si+(CO2)(n) and Si+(CO2)(n)Ar complexes - Evidence for unanticipated intracluster reactions. Canadian Journal of Chemistry-Revue Canadienne De Chimie 2004, 82, 934-946.

Jaeger, T. D. ; Fielicke, A. ; von Helden, G. ; Meijer, G. ; Duncan, M. A. Infrared spectroscopy of water adsorption on vanadium cluster cations (V-x(+); x=3-18). Chemical Physics Letters 2004, 392, 409-414.

Jaeger, T. D. ; Duncan, M. A. Photodissociation processes in transition-metal cation complexes with cyclooctatetraene. Journal of Physical Chemistry A 2004, 108, 11296-11301.

Walker, N. R. ; Walters, R. S. ; Grieves, G. A. ; Duncan, M. A. Growth dynamics and intracluster reactions in Ni+(CO2)(n) complexes via infrared spectroscopy. Journal of Chemical Physics 2004, 121, 10498-10507.

Jaeger, T. D. ; Pillai, E. D. ; Duncan, M. A. Structure, coordination, and solvation of V+(benzene)(n) complexes via gas phase infrared spectroscopy. Journal of Physical Chemistry A 2004, 108, 6605-6610.

Walters, R. S. ; Duncan, M. A. Infrared spectroscopy of solvation and isomers in Fe+(H2O)(1,2)Ar-m complexes. Australian Journal of Chemistry 2004, 57, 1145-1148.

2003

Walters, R. S. ; Brinkmann, N. R. ; Schaefer, H. F. ; Duncan, M. A. Infrared photodissociation spectroscopy of mass-selected Al+(CO2)(n) and Al+(CO2)(n)Ar clusters. Journal of Physical Chemistry A 2003, 107, 7396-7405.

Walker, N. R. ; Grieves, G. A. ; Walters, R. S. ; Duncan, M. A. The metal coordination in Ni+(CO2)(n) and NiO2+(CO2)(m) complexes. Chemical Physics Letters 2003, 380, 230-236.

Walker, N. R. ; Walters, R. S. ; Pillai, E. D. ; Duncan, M. A. Infrared spectroscopy of V+(H2O) and V+(D2O) complexes: Solvent deformation and an incipient reaction. Journal of Chemical Physics 2003, 119, 10471-10474.

Ayers, T. M. ; Fye, J. L. ; Li, Q. ; Duncan, M. A. Synthesis and isolation of titanium metal cluster complexes and ligand-coated nanoparticles with a laser vaporization flowtube reactor. Journal of Cluster Science 2003, 14, 97-113.

Gregoire, G. ; Brinkmann, N. R. ; van Heijnsbergen, D. ; Schaefer, H. F. ; Duncan, M. A. Infrared photodissociation spectroscopy of Mg+(CO2)(n) and Mg+(CO2)(n)Ar clusters. Journal of Physical Chemistry A 2003, 107, 218-227.

Walker, N. R. ; Grieves, G. A. ; Jaeger, J. B. ; Walters, R. S. ; Duncan, M. A. Generation of "unstable" doubly charged metal ion complexes in a laser vaporization cluster source. International Journal of Mass Spectrometry 2003, 228, 285-295.

Duncan, M. A. Infrared spectroscopy to probe structure and dynamics in metal ion-molecule complexes. International Reviews in Physical Chemistry 2003, 22, 407-435.

van Heijnsbergen, D. ; Demyk, K. ; Duncan, M. A. ; Meijer, G. ; von Helden, G. Structure determination of gas phase aluminum oxide clusters. Physical Chemistry Chemical Physics 2003, 5, 2515-2519.

2002

van Heijnsbergen, D. ; Jaeger, T. D. ; von Helden, G. ; Meijer, G. ; Duncan, M. A. The infrared spectrum of Al+-benzene in the gas phase. Chemical Physics Letters 2002, 364, 345-351.

Walters, R. S. ; Jaeger, T. D. ; Duncan, M. A. Infrared Spectroscopy of Ni+(C2H2)(n) complexes: Evidence for intracluster cyclization reactions. Journal of Physical Chemistry A 2002, 106, 10482-10487.

van Heijnsbergen, D. ; von Helden, G. ; Meijer, G. ; Duncan, M. A. Infrared resonance-enhanced multiphoton ionization spectroscopy of magnesium oxide clusters. Journal of Chemical Physics 2002, 116, 2400-2406.

van Heijnsbergen, D. ; von Helden, G. ; Meijer, G. ; Maitre, P. ; Duncan, M. A. Infrared spectra of gas-phase V+-(benzene) and V+-(benzene)(2) complexes. Journal of the American Chemical Society 2002, 124, 1562-1563.

Gregoire, G. ; Duncan, M. A. Infrared spectroscopy to probe structure and growth dynamics in Fe+-(CO2)(n) clusters. Journal of Chemical Physics 2002, 117, 2120-2130.

2001

Duncan, M. A. ; Knight, A. M. ; Negishi, Y. ; Nagao, S. ; Judai, K. ; Nakajima, A. ; Kaya, K. Photoelectron spectroscopy of V-x(coronene)(y) and Ti-x(coronene)(y) anions. Journal of Physical Chemistry A 2001, 105, 10093-10097.

Heijnsbergen, D. ; Duncan, M. A. ; Meijer, G. ; von Helden, G. Infrared spectroscopy of Ti8C12 'met-car' cations. Chemical Physics Letters 2001, 349, 220-226.

Foster, N. R. ; Buchanan, J. W. ; Flynn, N. D. ; Duncan, M. A. Ring destruction and carbide formation in niobium-PAH complexes. Chemical Physics Letters 2001, 341, 476-482.

von Helden, G. ; van Heijnsbergen, D. ; Duncan, M. A. ; Meijer, G. IR-REMPI of vanadium-carbide nanocrystals: Ideal versus truncated lattices. Chemical Physics Letters 2001, 333, 350-357.

Grieves, G. A. ; Buchanan, J. W. ; Reddic, J. E. ; Duncan, M. A. Photodissociation of exohedral transition metal-C-60 complexes. International Journal of Mass Spectrometry 2001, 204, 223-232.

Gregoire, G. ; Velasquez, J. ; Duncan, M. A. Infrared photodissociation spectroscopy of small Fe+-(CO2)(n) and Fe+-(CO2)(n) Ar clusters. Chemical Physics Letters 2001, 349, 451-457.

Velasquez, J. ; Kirschner, K. N. ; Reddic, J. E. ; Duncan, M. A. Ca+-Ar-2 complexes: linear or bent?. Chemical Physics Letters 2001, 343, 613-621.

2000

Foster, N. R. ; Grieves, G. A. ; Buchanan, J. W. ; Flynn, N. D. ; Duncan, M. A. Growth and photodissociation of Cr-x-(coronene)(y) complexes. Journal of Physical Chemistry A 2000, 104, 11055-11062.

Reddic, J. E. ; Pullins, S. H. ; Duncan, M. A. Photodissociation spectroscopy of the Ca+-Ne complex. Journal of Chemical Physics 2000, 112, 4974-4982.

Wesolowski, S. S. ; King, R. A. ; Schaefer, H. F. ; Duncan, M. A. Coupled-cluster electronic spectra for the Ca+-acetylene pi complex and comparisons to its alkaline earth analogs. Journal of Chemical Physics 2000, 113, 701-706.

Duncan, M. A. Frontiers in the spectroscopy of mass-selected molecular ions. International Journal of Mass Spectrometry 2000, 200, 545-569.

von Helden, G. ; Kirilyuk, A. ; van Heijnsbergen, D. ; Sartakov, B. ; Duncan, M. A. ; Meijer, G. Infrared spectroscopy of gas-phase zirconium oxide clusters. Chemical Physics 2000, 262, 31-39.

von Helden, G. ; Tielens, A. C. G. M. ; van Heijnsbergen, D. ; Duncan, M. A. ; Hony, S. ; Waters, L. B. F. M. ; Meijer, G. Titanium carbide nanocrystals in circumstellar environments. Science 2000, 288, 313-316.

1999

Reddic, J. E. ; Duncan, M. A. Photodissociation spectroscopy of the Mg+-C2H2 pi-complex. Chemical Physics Letters 1999, 312, 96-100.

Agreiter, J. K. ; Knight, A. M. ; Duncan, M. A. ZEKE-PFI spectroscopy of the Al-(H2O) and Al-(D2O) complexes. Chemical Physics Letters 1999, 313, 162-170.

Reddic, J. E. ; Duncan, M. A. Photodissociation spectroscopy of the Mg+-Ne complex. Journal of Chemical Physics 1999, 110, 9948-9955.

Stangassinger, A. ; Knight, A. M. ; Duncan, M. A. Photoionization spectroscopy of KAu and NaAu diatomics. Journal of Physical Chemistry A 1999, 103, 1547-1552.

Buchanan, J. W. ; Grieves, G. A. ; Reddic, J. E. ; Duncan, M. A. Novel mixed ligand sandwich complexes: competitive binding of iron with benzene, coronene, and C-60. International Journal of Mass Spectrometry 1999, 183, 323-333.

van Heijnsbergen, D. ; von Helden, G. ; Duncan, M. A. ; van Roij, A. J. A. ; Meijer, G. Vibrational spectroscopy of gas-phase metal-carbide clusters and nanocrystals. Physical Review Letters 1999, 83, 4983-4986.

Duncan, M. A. ; Knight, A. M. ; Negishi, Y. ; Nagao, S. ; Nakamura, Y. ; Kato, A. ; Nakajima, A. ; Kaya, K. Production of jet-cooled coronene and coronene cluster anions and their study with photoelectron spectroscopy. Chemical Physics Letters 1999, 309, 49-54.

Buchanan, J. W. ; Grieves, G. A. ; Flynn, N. D. ; Duncan, M. A. Photodissociation of silver-coronene cluster cations. International Journal of Mass Spectrometry 1999, 187, 617-624.

1998

Kirschner, K. N. ; Ma, B. ; Bowen, J. P. ; Duncan, M. A. Theoretical investigation of the Ca+-N-2 and Ca2+-N-2 complexes. Chemical Physics Letters 1998, 295, 204-210.

France, M. R. ; Pullins, S. H. ; Duncan, M. A. Photodissociation spectroscopy of the Ca+-C2H2 and Ca+-C2D2 pi complexes. Journal of Chemical Physics 1998, 109, 8842-8850.

France, M. R. ; Pullins, S. H. ; Duncan, M. A. Spectroscopy of the Ca+-acetylene pi complex. Journal of Chemical Physics 1998, 108, 7049-7051.

Pullins, S. H. ; Reddic, J. E. ; France, M. R. ; Duncan, M. A. Photodissociation spectroscopy of the Ca+-N-2 complex. Journal of Chemical Physics 1998, 108, 2725-2732.

France, M. R. ; Pullins, S. H. ; Duncan, M. A. Photodissociation of Mg+-(CH3OH)(N) complexes: evidence for the onset of solvation. Chemical Physics 1998, 239, 447-457.

Buchanan, J. W. ; Reddic, J. E. ; Grieves, G. A. ; Duncan, M. A. Metal and multimetal complexes with polyaromatic hydrocarbons: Formation and photodissociation of Fe-x-(coronene)(y) cations. Journal of Physical Chemistry A 1998, 102, 6390-6394.

Stangassinger, A. ; Knight, A. M. ; Duncan, M. A. Photoionization spectroscopy of Ga-rare gas complexes. Journal of Chemical Physics 1998, 108, 5733-5741.

1997

Berry, K. R. ; Duncan, M. A. Photoionization spectroscopy of LiMg. Chemical Physics Letters 1997, 279, 44-49.

Reddic, J. E. ; Robinson, J. C. ; Duncan, M. A. Growth and photodissociation of Ag-x-C-60 cation complexes. Chemical Physics Letters 1997, 279, 203-208.

Rao, A. M. ; Eklund, P. C. ; Venkateswaran, U. D. ; Tucker, J. ; Duncan, M. A. ; Bendele, G. M. ; Stephens, P. W. ; Hodeau, J. L. ; Marques, L. ; NunezRegueiro, M. ; Bashkin, I. O. ; Ponyatovsky, E. G. ; Morovsky, A. P. Properties of C-60 polymerized under high pressure and temperature. Applied Physics a-Materials Science & Processing 1997, 64, 231-239.

Knight, A. M. ; Stangassinger, A. ; Duncan, M. A. Photoionization spectroscopy of Au-Ar. Chemical Physics Letters 1997, 273, 265-271.

Reddic, J. E. ; Duncan, M. A. Composite samples and the generation of novel metal carbide clusters. Chemical Physics Letters 1997, 264, 157-162.

Stangassinger, A. ; Knight, A. M. ; Duncan, M. A. Photoionization spectroscopy of NaAg. Chemical Physics Letters 1997, 266, 189-194.

France, M. R. ; Buchanan, J. W. ; Robinson, J. C. ; Pullins, S. H. ; Tucker, J. L. ; King, R. B. ; Duncan, M. A. Antimony and bismuth oxide clusters: Growth and decomposition of new magic number clusters. Journal of Physical Chemistry A 1997, 101, 6214-6221.

Brock, L. R. ; Knight, A. M. ; Reddic, J. E. ; Pilgrim, J. S. ; Duncan, M. A. Photoionization spectroscopy of ionic metal dimers: LiCu and LiAg. Journal of Chemical Physics 1997, 106, 6268-6278.

Duncan, M. A. Spectroscopy of metal ion complexes: Gas-phase models for solvation. Annual Review of Physical Chemistry 1997, 48, 69-93.

1996

Scurlock, C. T. ; Pullins, S. H. ; Duncan, M. A. Photodissociation spectroscopy of Ca+-CO2. Journal of Chemical Physics 1996, 105, 3579-3585.

Scurlock, C. T. ; Pilgrim, J. S. ; Duncan, M. A. Rotationally resolved photodissociation spectroscopy of Mg+-Ar (vol 103, pg 3293, 1995). Journal of Chemical Physics 1996, 105, 7876-7876.

Pullins, S. H. ; Scurlock, C. T. ; Reddic, J. E. ; Duncan, M. A. Photodissociation spectroscopy of Ca+-rare gas complexes. Journal of Chemical Physics 1996, 104, 7518-7525.

Scurlock, C. T. ; Pullins, S. H. ; Reddic, J. E. ; Duncan, M. A. Photodissociation spectroscopy of Ca+-H2O and Ca+-D2O. Journal of Chemical Physics 1996, 104, 4591-4599.

Brock, L. R. ; Pilgrim, J. S. ; Robbins, D. L. ; Duncan, M. A. A convenient modification to the Newport pulsed molecular-beam valve. Review of Scientific Instruments 1996, 67, 2989-2990.

Brock, L. R. ; Duncan, M. A. Near-threshold photoionization to probe neutral ''met-car'' clusters. Journal of Physical Chemistry 1996, 100, 5654-5659.

1995

Scurlock, C. T. ; Pilgrim, J. S. ; Duncan, M. A. Rotationally Resolved Photodissociation Spectroscopy of Mg+-Ar. Journal of Chemical Physics 1995, 103, 3293-3298.

Brock, L. R. ; Duncan, M. A. Threshold Photoionization of Al-(N-2)(X) and Al-(Co2)(X) Complexes - Evidence for Solvation-Induced Reactions. Journal of Physical Chemistry 1995, 99, 16571-16575.

Brock, L. R. ; Duncan, M. A. Photoionization Spectroscopy of the in-N-2 Van-Der-Waals Complex. Journal of Chemical Physics 1995, 102, 9498-9505.

Robbins, D. L. ; Brock, L. R. ; Pilgrim, J. S. ; Duncan, M. A. Electronic Spectroscopy of the Mg+-N-2 Complex - Evidence for Photoinduced Activation of N-2. Journal of Chemical Physics 1995, 102, 1481-1492.

Pilgrim, J. S. ; Duncan, M. A. Photoionization Spectroscopy of Agli. Chemical Physics Letters 1995, 232, 335-340.

Pilgrim, J. S. ; Brock, L. R. ; Duncan, M. A. Photodissociation of Niobium - Carbon Clusters and Nanocrystals. Journal of Physical Chemistry 1995, 99, 544-550.

Brock, L. R. ; Duncan, M. A. Photoionization Spectroscopy of Cu-Kr. Chemical Physics Letters 1995, 247, 18-23.

Brock, L. R. ; Duncan, M. A. Photoionization Spectroscopy of Ag Rare-Gas Van-Der-Waals Complexes. Journal of Chemical Physics 1995, 103, 9200-9211.

1994

Yeh, C. S. ; Pilgrim, J. S. ; Willey, K. F. ; Robbins, D. L. ; Duncan, M. A. Spectroscopy of Weakly-Bound Magnesium-Ion Complexes. International Reviews in Physical Chemistry 1994, 13, 231-262.

Pilgrim, J. S. ; Duncan, M. A. Photochemical Cleavage of Metal-Carbon Nanocrystals and Their Reconstruction into Met-Cars Clusters. International Journal of Mass Spectrometry and Ion Processes 1994, 138, 283-296.

Brock, L. R. ; Pilgrim, J. S. ; Duncan, M. A. Photoionization Spectroscopy of Lial. Chemical Physics Letters 1994, 230, 93-98.

Wedum, E. E. ; Grant, E. R. ; Cheng, P. Y. ; Willey, K. F. ; Duncan, M. A. On the Assignment of Jahn-Teller Effects in the Ultraviolet-Absorption Spectrum of Ag-3. Journal of Chemical Physics 1994, 100, 6312-6317.

Pilgrim, J. S. ; Yeh, C. S. ; Berry, K. R. ; Duncan, M. A. Photodissociation Spectroscopy of Mg+ Rare-Gas Complexes. Journal of Chemical Physics 1994, 100, 7945-7956.

Yeh, C. S. ; Willey, K. F. ; Robbins, D. L. ; Duncan, M. A. Photodissociation of Magnesium-Ion Molecule Complexes in a Reflectron Time-of-Flight Mass-Spectrometer. International Journal of Mass Spectrometry and Ion Processes 1994, 131, 307-317.

Robbins, D. L. ; Yeh, C. S. ; Pilgrim, J. S. ; Lang, G. L. ; Duncan, M. A. Photoionization Electronic Spectroscopy of Alag. Journal of Chemical Physics 1994, 100, 4775-4783.

Willey, K. F. ; Robbins, D. L. ; Yeh, C. S. ; Duncan, M. A. Cluster-Ion Photodissociation and Spectroscopy in a Reflectron Time-of-Flight Mass-Spectrometer. Time-of-Flight Mass Spectrometry 1994, 549, 61-72.

1993

Pilgrim, J. S. ; Duncan, M. A. Beyond Metallo-Carbohedrenes - Growth and Decomposition of Metal-Carbon Nanocrystals. Journal of the American Chemical Society 1993, 115, 9724-9727.

Cornett, D. S. ; Duncan, M. A. ; Amster, I. J. Liquid-Mixtures for Matrix-Assisted Laser-Desorption. Analytical Chemistry 1993, 65, 2608-2613.

Yeh, C. S. ; Robbins, D. L. ; Pilgrim, J. S. ; Duncan, M. A. Photoionization Electronic Spectroscopy of Agk. Chemical Physics Letters 1993, 206, 509-514.

Pilgrim, J. S. ; Duncan, M. A. Photodissociation of Metallo Carbohedrene (Met Cars) Cluster Cations. Journal of the American Chemical Society 1993, 115, 4395-4396.

Cornett, D. S. ; Amster, I. J. ; Duncan, M. A. ; Rao, A. M. ; Eklund, P. C. Laser Desorption Mass-Spectrometry of Photopolymerized C-60 Films. Journal of Physical Chemistry 1993, 97, 5036-5039.

Pilgrim, J. S. ; Yeh, C. S. ; Duncan, M. A. Photodissociation Spectroscopy of Mg+-Ar. Chemical Physics Letters 1993, 210, 322-326.

Pilgrim, J. S. ; Duncan, M. A. Metallo-Carbohedrenes - Chromium, Iron, and Molybdenum Analogs. Journal of the American Chemical Society 1993, 115, 6958-6961.

Willey, K. F. ; Laihing, K. ; Taylor, T. G. ; Duncan, M. A. Photodissociation of Pb/Sb Bimetallic Cluster Cations. Journal of Physical Chemistry 1993, 97, 7435-7440.

Pilgrim, J. S. ; Robbins, D. L. ; Duncan, M. A. Photoionization Electronic Spectroscopy of Aloh. Chemical Physics Letters 1993, 202, 203-208.

Rao, A. M. ; Zhou, P. ; Wang, K. A. ; Hager, G. T. ; Holden, J. M. ; Wang, Y. ; Lee, W. T. ; Bi, X. X. ; Eklund, P. C. ; Cornett, D. S. ; Duncan, M. A. ; Amster, I. J. Photoinduced Polymerization of Solid C-60 Films. Science 1993, 259, 955-957.

Yeh, C. S. ; Willey, K. F. ; Robbins, D. L. ; Pilgrim, J. S. ; Duncan, M. A. Photodissociation Spectroscopy of the Mg+-Co2 Complex and Its Isotopic Analogs. Journal of Chemical Physics 1993, 98, 1867-1875.

Willey, K. F. ; Yeh, C. S. ; Duncan, M. A. Mass-Analyzed Threshold Ionization Spectroscopy of Al-Ar. Chemical Physics Letters 1993, 211, 156-160.

1992

Yeh, C. S. ; Willey, K. F. ; Robbins, D. L. ; Duncan, M. A. Photoinduced Reaction in Collinear Aligned Mg+-Co2 Complexes. Journal of Physical Chemistry 1992, 96, 7833-7836.

Willey, K. F. ; Yeh, C. S. ; Robbins, D. L. ; Duncan, M. A. Charge-Transfer in the Photodissociation of Metal Ion-Benzene Complexes. Journal of Physical Chemistry 1992, 96, 9106-9111.

Willey, K. F. ; Yeh, C. S. ; Robbins, D. L. ; Duncan, M. A. Photodissociation Spectroscopy of Mg+-Co2. Chemical Physics Letters 1992, 192, 179-184.

Robbins, D. L. ; Willey, K. F. ; Yeh, C. S. ; Duncan, M. A. Electronic Spectroscopy of Ag2-Xe. Journal of Physical Chemistry 1992, 96, 4824-4829.

Cornett, D. S. ; Duncan, M. A. ; Amster, I. J. Matrix-Assisted Laser Desorption at Visible Wavelengths Using a 2-Component Matrix. Organic Mass Spectrometry 1992, 27, 831-832.

Willey, K. F. ; Yeh, C. S. ; Robbins, D. L. ; Pilgrim, J. S. ; Duncan, M. A. Photodissociation Spectroscopy of Mg+-H2o and Mg+-D2o. Journal of Chemical Physics 1992, 97, 8886-8895.

Yeh, C. S. ; Willey, K. F. ; Robbins, D. L. ; Pilgrim, J. S. ; Duncan, M. A. Photodissociation Spectroscopy of Mg+-H2o. Chemical Physics Letters 1992, 196, 233-238.

Cornett, D. S. ; Peschke, M. ; Laihing, K. ; Cheng, P. Y. ; Willey, K. F. ; Duncan, M. A. Reflectron Time-of-Flight Mass-Spectrometer for Laser Photodissociation. Review of Scientific Instruments 1992, 63, 2177-2186.

1991

Willey, K. F. ; Cheng, P. Y. ; Yeh, C. S. ; Robbins, D. L. ; Duncan, M. A. Electronic Spectroscopy of Silver Dimer Rare-Gas Complexes. Journal of Chemical Physics 1991, 95, 6249-6256.

Willey, K. F. ; Robbins, D. L. ; Yeh, C. S. ; Duncan, M. A. Laser Photodissociation Spectroscopy of Mass-Selected Metal-Clusters. Faraday Discussions 1991, 269-277.

1990

Taylor, T. G. ; Willey, K. F. ; Bishop, M. B. ; Duncan, M. A. Photodissociation of Mass-Selected Bi/Cr and Bi/Fe Bimetallic Clusters. Journal of Physical Chemistry 1990, 94, 8016-8019.

Willey, K. F. ; Cheng, P. Y. ; Pearce, K. D. ; Duncan, M. A. Photoinitiated Charge-Transfer and Dissociation in Mass-Selected Metalloorganic Complexes. Journal of Physical Chemistry 1990, 94, 4769-4772.

Willey, K. F. ; Cheng, P. Y. ; Taylor, T. G. ; Bishop, M. B. ; Duncan, M. A. Photoionization and Mass-Selected Photodissociation of Tellurium Clusters. Journal of Physical Chemistry 1990, 94, 1544-1549.

Cheng, P. Y. ; Willey, K. F. ; Salcido, J. E. ; Duncan, M. A. Resonance-Enhanced Photodissociation Spectroscopy of Mass-Selected Metal Cluster Cations. International Journal of Mass Spectrometry and Ion Processes 1990, 102, 67-80.

1989

Cheng, P. Y. ; Willey, K. F. ; Duncan, M. A. Vibronic Spectroscopy of Ag2-Ar. Chemical Physics Letters 1989, 163, 469-474.

Laihing, K. ; Cheng, P. Y. ; Taylor, T. G. ; Willey, K. F. ; Peschke, M. ; Duncan, M. A. Photodissociation in a Reflection Time-of-Flight Mass-Spectrometer - a Novel Mass-Spectrometry Mass-Spectrometry Configuration for High-Mass Systems. Analytical Chemistry 1989, 61, 1458-1460.

Bishop, M. B. ; Laihing, K. ; Cheng, P. Y. ; Peschke, M. ; Duncan, M. A. Growth-Patterns and Photoionization Dynamics of in/Sb and in/Bi Intermetallic Clusters. Journal of Physical Chemistry 1989, 93, 1566-1569.

Duncan, M. A. ; Rouvray, D. H. Microclusters. Scientific American 1989, 261, 110-115.

Laihing, K. ; Cheng, P. Y. ; Duncan, M. A. Laser Photoionization and Spectroscopy of Gas-Phase Silver Clusters. Zeitschrift Fur Physik D-Atoms Molecules and Clusters 1989, 13, 161-169.

1988

Cheng, P. Y. ; Duncan, M. A. Vibronic Spectroscopy and Dynamics in the Jet-Cooled Silver Trimer. Chemical Physics Letters 1988, 152, 341-346.

Geusic, M. E. ; Freeman, R. R. ; Duncan, M. A. Neutral and Ionic Clusters of Antimony and Bismuth - a Comparison of Magic Numbers. Journal of Chemical Physics 1988, 89, 223-229.

Geusic, M. E. ; Freeman, R. R. ; Duncan, M. A. Photofragmentation of Antimony and Bismuth Cluster Cations at 248-Nm. Journal of Chemical Physics 1988, 88, 163-166.

Wheeler, R. G. ; Laihing, K. ; Wilson, W. L. ; Duncan, M. A. Growth-Patterns in Binary Clusters of Group-Iv and Group-V Metals. Journal of Chemical Physics 1988, 88, 2831-2839.

1987

Laihing, K. ; Wheeler, R. G. ; Wilson, W. L. ; Duncan, M. A. Photoionization Dynamics and Abundance Patterns in Laser Vaporized Tin and Lead Clusters. Journal of Chemical Physics 1987, 87, 3401-3409.

Laihing, K. ; Cheng, P. Y. ; Duncan, M. A. Ultraviolet Photolysis in a Laser Vaporization Cluster Source - Synthesis of Novel Mixed-Metal Clusters. Journal of Physical Chemistry 1987, 91, 6521-6525.

1986

Wheeler, R. G. ; Laihing, K. ; Wilson, W. L. ; Duncan, M. A. Semimetal Clusters - Laser Vaporization and Photoionization of Antimony and Bismuth. Chemical Physics Letters 1986, 131, 8-13.

Wheeler, R. G. ; Laihing, K. ; Wilson, W. L. ; Allen, J. D. ; King, R. B. ; Duncan, M. A. Neutral Gas-Phase Analogs of Condensed-Phase Post-Transition-Metal Cluster Ions - Laser Vaporization and Photoionization of Sn/Bi and Pb/Sb Alloys. Journal of the American Chemical Society 1986, 108, 8101-8102.

Wheeler, R. G. ; Duncan, M. A. Neutral Metal Cluster Formation and Oxidation Reactions in the Photolysis of Iron Carbonyl Vanderwaals Complexes. Journal of Physical Chemistry 1986, 90, 3876-3879.

Wheeler, R. G. ; Duncan, M. A. Multiphoton Ionization and Photochemistry of Chromyl Chloride in Supersonic Cluster Beams. Journal of Physical Chemistry 1986, 90, 1610-1614.

1983

Duncan, M. A. ; Bierbaum, V. M. ; Ellison, G. B. ; Leone, S. R. Laser-Induced Fluorescence Studies of Ion Collisional Excitation in a Drift Field - Rotational-Excitation of N-2+ in Helium. Journal of Chemical Physics 1983, 79, 5448-5456.

Hamilton, C. E. ; Duncan, M. A. ; Zwier, T. S. ; Weisshaar, J. C. ; Ellison, G. B. ; Bierbaum, V. M. ; Leone, S. R. Product Vibrational Analysis of Ion Molecule Reactions by Laser-Induced Fluorescence in a Flowing Afterglow - O-+Hf-]Oh(Upsilon=0,1)+F-. Chemical Physics Letters 1983, 94, 4-9.

1982

Powers, D. E. ; Hansen, S. G. ; Geusic, M. E. ; Puiu, A. C. ; Hopkins, J. B. ; Dietz, T. G. ; Duncan, M. A. ; Langridgesmith, P. R. R. ; Smalley, R. E. Supersonic Metal Cluster Beams - Laser Photo-Ionization Studies of Cu2. Journal of Physical Chemistry 1982, 86, 2556-2560.

Dietz, T. G. ; Duncan, M. A. ; Smalley, R. E. ; Cox, D. M. ; Horsley, J. A. ; Kaldor, A. Spectral Narrowing and Infrared-Laser Fragmentation of Jet-Cooled Uo2(Hfaa)2 Tmp and Uo2(Hfaa)2 Thf - Volatile Uranyl Compounds. Journal of Chemical Physics 1982, 77, 4417-4426.

Dietz, T. G. ; Duncan, M. A. ; Smalley, R. E. Time Evolution Studies of Triplet Toluene by 2-Color Photo-Ionization. Journal of Chemical Physics 1982, 76, 1227-1232.

1981

Duncan, M. A. ; Dietz, T. G. ; Smalley, R. E. 2-Color Photo-Ionization of Naphthalene and Benzene at Threshold. Journal of Chemical Physics 1981, 75, 2118-2125.

Duncan, M. A. ; Dietz, T. G. ; Smalley, R. E. Laser Synthesis of Metal-Clusters from Metal-Carbonyl Micro-Crystals. Journal of the American Chemical Society 1981, 103, 5245-5246.

Dietz, T. G. ; Duncan, M. A. ; Powers, D. E. ; Smalley, R. E. Laser Production of Supersonic Metal Cluster Beams. Journal of Chemical Physics 1981, 74, 6511-6512.

Duncan, M. A. ; Dietz, T. G. ; Liverman, M. G. ; Smalley, R. E. Photo-Ionization Measurement of the Triplet Lifetime of Benzene. Journal of Physical Chemistry 1981, 85, 7-9.

1980

Monts, D. L. ; Dietz, T. G. ; Duncan, M. A. ; Smalley, R. E. New Vibronic Bands of Ch2 Observed in a Pulsed Supersonic Jet. Chemical Physics 1980, 45, 133-139.

Dietz, T. G. ; Duncan, M. A. ; Liverman, M. G. ; Smalley, R. E. Efficient Multi-Photon Ionization of Jet-Cooled Aniline. Chemical Physics Letters 1980, 70, 246-250.

Dietz, T. G. ; Duncan, M. A. ; Liverman, M. G. ; Smalley, R. E. Resonance Enhanced 2-Photon Ionization Studies in a Supersonic Molecular-Beam - Bromobenzene and Iodobenzene. Journal of Chemical Physics 1980, 73, 4816-4821.

1979

Duncan, M. A. ; Dietz, T. G. ; Smalley, R. E. Efficient Multi-Photon Ionization of Metal-Carbonyls Cooled in a Pulsed Supersonic Beam. Chemical Physics 1979, 44, 415-419.