Tags: Analytical Seminar


Bioresponsive Nanomedicines for Cancer and Ischemic Brain Injury

Biologically responsive nanotechnologies have attracted tremendous attentions for controlled delivery of therapeutic molecules and the development of precision medicines. Dr. Shi and his team have recently designed various bioresponsive nanoparticle platforms to tackle the challenges associated with systemic RNA delivery to tumor cells, such as enzymatic degradation, rapid elimination by renal excretion or the mononuclear phagocyte system, and…


Rheology of Chemical Reactions

Rheology is a complex field and includes a wide scope of study. Most chemical reactions do not experience notable rheological behavior, however when considering reactions such as suspensions and polymerization, rheology becomes an important factor, due to the unique visco-elastic behavior of these systems. These class of materials experience different responses to stress and strain, thus leading to changes in viscosity and modulus which can be…


In situ spectroelectrochemical formation of germanene

Germanene is a germanium allotrope similar to graphene. Unlike graphene, germanene features a low-buckled structure, because the Ge-Ge bond in germanene has both sp2 and sp3 hybridization. However, germanene still features Dirac cones in its band structure, thus electrons near Fermi level behave as massless particles; resulting in ultra-high carrier mobility. Experimental formation of germanene has been reported starting 2014, but most of the…


Surgical Suture: Manufacture, Characterization, and Emerging Trends


Transitioning to eBooks: an Investigation of Student Satisfaction and Use of Worked Examples

The textbook is a multipurpose reference to find problem-solving algorithms or to gain conceptual understanding of the lecture content.1 The instructor-chosen textbook often drives the curriculum, especially for instructors with heavy teaching loads. Over the past 90 years, a traditional hard-copy text has been used to accompany the training of future chemists as the curriculum has evolved from purely descriptive chemistry to a “theory-first”…


Designing Polymer Brushes: Promising platforms for Proteins Antifouling, Mesophilic Enzymes Thermal Stability, and Targeted Drug Delivery

The grafting of polymer chains on flat surfaces or nanoparticles is a promising approach to surface derivatization and manipulation that is increasingly being used in a variety of fields. Surface-confined polymers can be prepared via two main techniques: the grafting from, which leads to higher surface coverage (number of polymer chains/nm2), and the grafting to, which has the disadvantage of yielding low surface coverage because of steric…


Recently Developed Molecular Weight, Polydispersity and Structure Characterizations of Synthetic Polymers


Generating morphologically and chemically diverse surfaces through post-polymerization modification of polymer brushes

Click chemistry combined with post-polymerization modification (PPM) of reactive polymer brushes can result in a wide array of surfaces, differing in chemical functionalities and morphologies.1 Poly(pentafluorophenyl acrylate) (Poly(PFPA)) brushes react quickly and quantitatively towards primary amines, with few side reactions, and have been shown to be a promising reactive scaffold for use in templating a variety of functionalities and…


Two-Photon-Induced Luminescence of Gold Nanoparticles: Experimental Design and Analysis

In 2000, Mohamed et al. reported gold nanoparticles with a luminescence quantum yield six orders of magnitude greater than bulk gold.1 The enhancement was attributed to localized surface plasmon resonances. Recent studies understand and engineer the luminescence of nanoparticles by the altering particle geometries and plasmon modes.2-4 Interestingly, gold nanoparticles show two-photon-induced luminescence (TPIL) that can be measured at the…


Assisting the Identification of Isomeric N-linked Glycans with Hydrophilic Interaction Liquid Chromatography (HILIC) Retention Models

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