Tags: Analytical Seminar


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


Innovations in Glycosaminoglycan Mass Spectrometry: Algorithms for Automated Interpretation and Sequence Analysis


From solution to the gas-phase. What can we learn on the structure, dynamics and distribution of biomolecules?

Recent innovations in speed, accuracy and sensitivity have established mass spectrometry (MS) based methods as a key technology for the mapping and analysis of small molecules, lipids, peptides, protein, DNA and DNA-protein complexes in biological systems. In particular, Ion Mobility Spectrometry – Mass Spectrometry provides a powerful tool for the identification of structural motifs, and when complemented with theoretical calculations, it…


Mass Spectrometry, Ion Mobility, and Ion Chemistry: Tools for Characterizing the Structures of Proteins in Solution and in the Gas Phase

 Native mass spectrometry is an emerging approach for characterizing the stoichiometry, assembly, and shapes of protein complexes in solution. Native mass spectrometry is especially useful for investigating proteins and protein complexes that are challenging to characterize using condensed-phase experiments, including those that are heterogeneous, have large mass, and are membrane bound. I will discuss how my lab uses mass spectrometry, ion…


Mechanical and Chemical Recycling of Thermoplastics

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