Tags: Inorganic Seminar


"Metaling" with Nature: Design and characterization of model metalloenzymes for small molecule activation


Conversion-Type Electrodes and Ceramic Separators for Next Generation Li-Ion Batteries

Energy density and cost of Li-ion batteries (LIBs) based on conventional intercalation compounds are closely approaching their limits. The reliance of conventional cathodes on the use of toxic metals additionally endangers health and safety of miners in developing countries. Conversion-type active materials offer an opportunity to double energy stored in LIBs, reduce their cost by the same factor, and improve cell safety. These materials may be…


Electron Delocalization in the f-Block

The principal goal of the La Pierre group synthetic and X-ray absorption spectroscopic (XAS) studies is to disentangle the complex electronic structure of f-block materials. Definitive spectroscopic and thermodynamic signatures of electronic structure phenomena unique to lanthanide, actinide, and transuranic materials are lacking. In particular, the process of establishing clear correspondence between spectroscopic signature, electronic…


Investigating the Heterogeneous Nucleation in Nanocrystal Growth with an Isocyanide Probe by Surface-Enhanced Raman Scattering

Bimetallic nanocrystals, made of two different metal species, have properties that are often superior to their single-metal counterparts. The arrangement of the two different metals relative to each other in the nanocrystal is very important in determining the nanocrystal properties, and considerable effort has been made to deposit one metal atop the nanocrystal surface of another metal with precision in location. It remains a grand challenge to…


PbTiO3 Nanosheets from a Layered Titanate Precursor

Freestanding nanosheets of lead titanate (PbTiO3) were synthesized via a hydrothermal approach. PbTiO3 is distinguished for being a piezoelectric material that exhibits ferroelectricity, as well as for having a high Curie temperature compared to other perovskite materials. For this reason, research on PbTiO3 nanomaterials is of great interest for applications involving high temperature piezoelectric ceramics and microelectronics. The isolation…


Engineered Manganese-Based Nanoparticles as MRI Contrast Agents for Early Tumor Detection

Cancer is a fatal disease, affecting approximately 25% of the population worldwide1. Given the global impact, early detection of cancer is needed to reduce morbidity and prevent mortality2. Unfortunately, not all forms of cancer diagnosis such as blood tests or biopsy can detect the disease during its early stages. Medical imaging has emerged as one of the salient tools for early detection, but not all imaging modalities fit this criterion. Some…


Advances in Polycrystalline P-type SnSe for Thermoelectric Applications

Approximately two-thirds of the energy utilized globally is lost as heat in the atmosphere.1 The role of thermoelectric materials is gaining more attention to recycle this lost energy, especially in light of the increased worldwide projection for energy demand. Unfortunately, the conversion efficiency of thermoelectric applications averages around 5-10%, which raises concern regarding the ability to expand these applications on a wider scale.2…


Manganese coordination chemistry: opportunities and applications for magnetic resonance imaging

My talk will cover work on two projects. One project focuses on the development of new Mn coordination complexes as a replacement for commercially available MRI contrast agents, which are all gadolinium-based. This work is driven by a high-state of anxiety surrounding well-established and newly emergent toxicity concerns related to Gd-based contrast agents. The other project is focused on developing redox active Mn coordination complexes as…


Synthesis of Carbene-Stabilized Silylenes and 1,3,2-Diazaborole-Derived Carbene Complexes

The investigation of novel silylene (:SiR2) species will be presented. The reaction of carbene-stabilized disilicon(0) with one equivalent of Fe(CO)5 at room temperature yields the carbene-stabilized Si2Fe(CO)4 complex (1). Further reaction of 1 with an additional equivalent of Fe(CO)5 at raised temperatures affords carbene-stabilized silylene-iron carbonyl cluster, Si[μ-Fe2(CO)6](μ-CO)Si (2), through the insertion of a CO and a Fe2(CO)6 unit…


Photophysics of Metal-Organic Frameworks with Emphasis on Directional Energy Transfer

The study of energy transfer (ET) processes is a cornerstone of modern physical and inorganic chemistry, which is driven by growing demand in efficient energy transfer and conversion, necessary to build a sustainable energy society independent from fossil fuels. Specifically, materials with a predesigned pathway for ET can address the urgent needs in fast enhancement of material performance in areas ranging from optoelectronic devices to…
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