chemistry

UK Researchers Seek to Identify Ways to Relieve Post-Chemotherapy Cognitive Impairment

By Gail Hairston and Allison Perry

Of the 14 million cancer survivors in the United States, a significant number experience a serious side effect called chemotherapy-induced cognitive impairment (CICI). While easily recognized, little is known about the etiology of this condition, also known informally as “chemo brain.” CICI can significantly reduce patients’ quality of life with serious, even devastating, symptoms such as memory lapses, difficulty concentrating, negative impacts on multitasking, confusion and fatigue.

PhD Chemistry Alum turned Lawyer

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A&S Faculty Members Among Those Awarded SEC Travel Grants

By Bryant Welbourne and Kathy Johnson

Eight University of Kentucky faculty members are among more than 100 faculty members from all 14 Southeastern Conference universities taking part in the 2017-18 SEC Faculty Travel Program. Now in its sixth year, the program provides support for selected individuals to collaborate with colleagues at other SEC member institutions.

Richards, Pauly Research Mechanism of Nicotine Addiction

By Gail Hairston

Two University of Kentucky professors have been awarded funding to help elucidate the mechanism of nicotine addiction and to identify targets for nicotine cessation therapeutics.

Richards and Pauly Awarded funds for Research on Therapeutic Targeting in Nicotine Addiction

Assistant Professor Chris Richards (UK Chemistry) and Professor James Pauly (UK Pharmacy) have been awarded funding to help elucidate the mechanism of nicotine addiction and to identify targets for nicotine cessation therapeutics. The $760,000 grant awarded by the National Institutes of Health is titled "Single Molecule Determination of nAChR Structural Assembly for Therapeutic Targeting.”

Miller and Colleagues Publish on Bifurcating Enzymes in Nature Chemical Biology

University of Kentucky researchers participating in a Department of Energy-funded center have discovered a ground-breaking process that allows them to harness energy from chemical reactions that previously would have been dismissed as unusable. The process – which maximizes the efficiency of reactions at the molecular level – could affect everything from synthetic biology to fuel and chemical production. The authors are part of a multi-institutional team called the Biological Electron Transfer and Catalysis (BETCy) Energy Frontier Research Center.

Wei Receives NSF Grant to Study Membrane Protein Oligomerization

Dr. Yinan Wei, associate professor of chemistry at the University of Kentucky, has received an award to study membrane protein oligomerizations in bilayers. This award, supported by The Chemistry of Life Processes Program in the Chemistry Division of the National Science Foundation, investigates protein-protein interactions in the cell membrane that lead to the assembly of functional protein complexes.

Graham Receives DOE CAREER Award to Study Organic-Perovskites Interfaces

Dr. Kenneth Graham, an assistant professor of chemistry at the University of Kentucky, has been selected as a recipient of a CAREER Award from the Department of Energy. This award supports the development of individual research programs of outstanding scientists early in their careers and stimulates research programs in the disciplines supported by the DOE Office of Science.

UK Chemistry Researchers Awarded National Science Foundation Grant to Build a Battery Prototype

A team of scientists at the University of Kentucky and at the Massachusetts Institute of Technology have been awarded a National Science Foundation grant to develop a prototype of a battery utilizing chemical components prepared at UK. Professors Susan Odom and John Anthony (UK Chemistry) synthesized new organic compounds as donors and acceptors for a type of battery called a redox flow battery (RFB), currently of great interest for large-scale energy storage.

UK-MRS Seminars

UK-MRS Seminars

June 12. 2017, 10:00-11:00 am

C226 OHR (Oliver H. Raymond Civil Engineering Building)

 

“Anode Surface Evolution in Aqueous Sodium-Ion Batteries”

Xiaowen Zhan, Department of Chemical and Materials Engineering 

Aqueous sodium-ion batteries may solve the cost and safety issues associated with the energy storage systems for the fluctuating supply of electricity based on solar and wind power. Compared to their lithium counterparts, aqueous sodium-ion batteries offer multiple advantages including more earth abundant sodium, cheaper electrode materials and electrolyte solutions as well as less costly manufacturing conditions. However, poor overall performance and low electrode utilization (much of the electrode material ends up being electrochemically inactive) are the main barriers implementing them in (micro) grid systems. Here we characterize the surface reactions on NASICON-type phosphate anode materials and rationalize their close associations with capacity fading upon slow cycling of aqueous sodium-ion batteries. The surface reactions result in the formation of an electrically insulating surface layer causing the failure of electrochemical performance and the precipitation of surface particles that blocks the pores thereby leading to poor electrode utilization. These findings provide insights into new possibilities of improving the electrochemical performance of aqueous sodium-ion batteries by designing protective layers through surface modifications that prevent the formation of insulating surface layers and insoluble precipitates. 

 

“Stable, High-Capacity Electrolytes for Non-Aqueous Redox Flow Batteries”

Harsha Attanayake, Department of Chemistry University of Kentucky

Redox flow batteries (RFBs) are one of the promising electrochemical devices for stationary energy storage applications due to their decoupled energy and power, long service life, and simple manufacturing. Despite advances of commercially available aqueous RFBs, they suffer from lower energy densities due to narrow electrochemical window of water (~1.5 V). Transitioning from aqueous to non-aqueous chemistry offers a wider and stable electrochemical window (>4 V), a greater selection of redox materials, a wider range of working temperatures, high cell voltage, and potentially high energy density. So far, only a limited number of highly soluble and stable organic compounds have been reported for non- aq RFBs applications as catholytes. It is crucial that the design of organic electro-active materials does not compromise any of the following characteristics: high solubility (charged and neutral states), higher oxidation potential (for electron donors), and enabling a high molecular capacity for electron donation (or acceptance). Our studies mainly focus on development of high capacity catholytes for non-aqueous redox flow batteries with stable neutral and oxidized states. This presentation will focus on molecular designing strategies to increase the solubility of phenothiazine derivatives in their charged states and neutral states, stabilization of one and two electron donation, and a new approach to raise the oxidation potential, along with their synthesis and electrochemical analysis. 

 

 

 

Date: 
Monday, June 12, 2017 - 10:00am to 11:00am
Location: 
OHR C226

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