In by admin

NameMs. Jessica Martin
OrganizationUniversity of South Florida
TopicMaterials Chemisry

Photophysical Characterization of Photocatalytic Rhenium(I) materials for CO2 reduction


Jessica Martin and Dr. Randy W. Larsen

Author Location(s)

Department of Chemistry, University of South Florida, Tampa, FL


The continual rise of atmospheric CO2 concentrations, largely due to the combustion of fossil fuels, remains a global threat to our environment. Thus, developing technologies that can mitigate the deleterious effects of atmospheric CO2 are of continued interest. The goal of this study is to design Rhenium(I) based photocatalysts that can capture and reduce CO2 to C1-based fuels and industrial feedstock chemicals.  The first step in development of these catalysts is the synthesis and characterization of the parent ClRe(CO)3(2,2’-bipyridine). The optical spectrum shows absorbance bands in the 360-380 nm region (ReX(CO)3 -> bpy 1MLCT), 290-295 nm region (ligand based π -> π*) and 235-245 nm region (Re -> CO 1MLCT). The emission spectrum when excited at 370nm shows a λmax between 600-605nm. The second step involves encapsulating this Rhenium(I) catalysts into a stable, porous metal-organic framework, USF2, and analyzing the photophysical properties of the encapsulated metal complex. Our efforts to determine lifetimes, structural and other physical information are described herein.