Research Highlights

Size changes of spherical bottlebrushes in linear melt  

Size changes of spherical bottlebrushes in linear melt

Spherical bottlebrushes change the size depending on the molecular weight of the linear host matrix. Small-angle neutron scattering allowed to detect these changes, resulting in decreasing bottlebrush radii with increasing molecular weight of the linear host matrix. Additionally, aggregation can be observed in the largest host matrix at the highest concentration.

Bottlebrush Polymer ARTICLE

BODIPYs with restricted meso-8-aryl rotation

BODIPYs with restricted meso-8-aryl rotation

Boron dipyrromethenes (BODIPYs) bearing multiple methyl substituents and a meso-8-aryl group were synthesized and investigated, both experimentally and computationally. The free rotation of the meso-8-aryl group is prevented due to the presence of the 1,7-dimethyl groups and of ortho-substituents on the meso-8-aryl ring, resulting in BODIPY derivatives with high fluorescence quantum yields, independent of the solvent viscosity.

Bodipy Article

Probing weak hydrogen bonds with Time-Resolved Spectroscopy 

Probing weak hydrogen bonds with Time-Resolved Spectroscop

Weak hydrogen bonds between the highly polarized hydrogen atom of chloroform and the amide carbonyl were proved and probed via linear and nonlinear IR spectroscopic techniques. Experiments showed that weak hydrogen bonds have an energetics of few kcal/mol and are responsible for distinguishable arrangements of chloroform molecules around carbonyl groups.  

Hydrogen Bonds Article

Thermal and chemical effects of fillers on free-radical frontal polymerization 

thermal and chemical effects on free-radical frontal polymerization

Filled systems are important for the development of materials through frontal polymerization. Fillers are added to control the rheological properties of the formulation and to enhance the mechanical properties of products. Results demonstrate that some fillers can increase front velocity through their high thermal diffusivities while others decrease it by acting as radical scavengers.

Frontal Polymerization Article

Utilizing Engineered Soil Surrogates to Study Environmental, Ecological, and Agricultural Processes

Engineered soil depicting structure with sorption studies

A novel model approach was developed and applied to gain a molecular-level understanding of environmental pollutant/soil interactions. The approach provides a scalable platform with molecular-level control of the soil organic matter (SOM) chemical composition and structure, allowing one to examine proposed SOM interactions with agricultural chemicals and beyond.

Open Access Article

Probing Electron Spins in Enzymes Biosynthesis

graphical abstract of  electron spins in enzymes biosynthesis

MCD and EPR probing of the nitrogenase M cluster precursors electron spins dynamics suggests new mechanisms of enzymes biosynthesis and substrate binding. Additional ongoing ultrafast electron-scale investigations are carried out to get better understanding of such mechanisms.

PROBING ELECTRON SPINS IN ENZYMES ARTICLE

Past RESEARCH HIGHLIGHTS


News and Events

National Chemistry Week

For National Chemistry Week, LSU Chemistry graduate student Ashley Walker and her daughter create a spooky, erupting pumpkin.  

LSU Tiger Profile

Dr. Pojman, Dr. Spivak, Anthony Mai

The lack of hand sanitizer was a problem for the Louisiana Secretary of State’s Office, who reached out to LSU Chemistry for help preparing about 5,000 gallons of hand rub sanitizer.

Tiger Profile

National Chemistry Week

Tynia Madison, chemistry senior and co-president of LSU Student Affiliates American Chemical Society (SAACS), makes sticky spider webs.

 

Video Highlight

Video tour of the instruments, resources, and technologies available in the Department of Chemistry.  To view more videos, visit the LSU Chemistry Youtube Channel.

Chemistry Blog Feature

Dr. Benson Edagwa

Dr. Benson Edagwa

Past Blog Features