Tags: Departmental Colloquium


The Many-Body Expansion in Chemistry

The Many-Body Expansion (MBE) of the energy of a chemical system is a powerful tool that encodes physical descriptors of cooperative effects in chemical systems. Depending on the definition of what a “body” is, the expansion can be applied to a wide variety of chemical ensembles. When applied to hydrogen bonded systems, such as water and aqueous ionic clusters including ions in the Hofmeister series, it has direct implications in the development…


Structural Basis for Catalytic Diversity in the Carotenoid Oxygenase Superfamily

Carotenoid cleavage dioxygenases (CCDs) are mononuclear non-heme iron enzymes that classically split carotenoids at specific alkene bonds producing apocarotenoid products. Certain members of this enzyme superfamily have evolved to process alternative substrates with varying regio- and stereo-selectivity, and some catalyze alternative reactions including alkene geometric isomerization and ester hydrolysis. Products of these reactions are vital…


General Chemistry Teaching Demonstration


Neat, Simple, and Wrong: Electrostatic Fallacies Regarding Noncovalent Interactions


Technology Developments to Expand the Utility of MS Imaging in Interdisciplinary Studies


The 34th Annual Charles A. Coulson Lecture

How non-covalent interactions contribute to gas-phase bond energies. What is the design behind Vitamin B12? Homolytic dissociation of the weak Co-C bond in Vitamin B12 (adenosylcobalamine), an essential cofactor in a large number of enzymes, initiates radical reactions.  Modulation of the bond dissociation energy is accordingly a key element in control of enzymatic activity, although one would ordinarily consider homolytic bond…


From the Ground Up: The Development, Implementation, and Assessment of a Comprehensive Curriculum Redesign for Organic Chemistry

Comprehensive redesign and implementation of an organic chemistry curriculum is a complex and multi-faceted undertaking. All revisions must sustain academic rigor and support continuing modifications. Unfortunately, external metrics designed to measure the success of comprehensive curriculum changes are uncommon or only marginally helpful. Our unique metrics developed in conjunction with curriculum redesign will be discussed. In addition to…


Toward a Comprehensive Predictive Model of Stacking Interactions

Stacking interactions, which are roughly parallel face-to-face interactions between planar π-systems, play important roles in chemical and biochemical systems. Our ability to predict and rationally tune the strength of these interactions is important in everything from the design of new organic materials and catalysts to structure-based drug design. I will discuss our decade-long effort to develop quantitative and qualitative models of stacking…


Laser-Based Nanoscale 3D Printing: Chemistries, Materials, and Functional Optical Devices

Nanophotonics involves the development of fundamental science, materials, and applications that leverage the interaction of light and matter on the nanometer to micrometer length scales. This growing and highly interdisciplinary field involves chemistry, materials science, physics, engineering, and bio-science. In this presentation Dr. Kuebler will introduce the field of nanophotonics and describe some work done by his group in this area. The…


Design of Targeted Polymeric Nanocarriers for Drug Delivery

Nanoscale polymeric particles, in particular self-assembled block copolymer micelles, have been utilized in pharmaceutics for development of novel therapeutic and diagnostic modalities. Advantages of the polymeric micelles include their small size, long circulation in bloodstream, ability to circumvent renal excretion and extravasation at sites of enhanced vascular permeability. They can be designed to facilitate the incorporation of a variety…
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