Colloidal Nanocrystals in Energy Transfer Reactions
Professor, Department of Physics and Astronomy
Bowling Green State University, Ohio
Wednesday, August 21, 2019
C2-361 (Reading Room)
Excitonic energy transfer is a versatile mechanism by which colloidal nanocrystals can interact with a variety of nanoscale species. While this process is analogous to dipole-dipole coupling in molecular systems, the corresponding energy transfer dynamics can deviate from that of molecular assemblies due to manifestations of bulk-like features in semiconductor colloids. In particular, weak exciton binding, small single-triplet exciton splitting, and the energy disorder across nanocrystal ensembles can all play a distinctive role in the character of ensuing energy conversion processes. In my presentation, I will discuss the latest research on the key scenarios under which nanocrystals can engage in the energy transfer with other nanoparticles, organic fluorophores, and plasmonic nanostructures, highlighting potential technological benefits to be gained from such processes. I will also shed light on experimental strategies for probing the energy transfer in nanocrystals-based assemblies with a particular emphasis on novel characterization techniques. Finally, I will discuss some of the new trends in energy transfer reactions involving metal nanoparticles that show strong promise for applications in biosensing and photocatalysis.
200 University Avenue West
Waterloo, ON N2L 3G1