Wiess School of Natural Sciences
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Biochemistry & Cell Biology
Earth Science
Ecology & Evolutionary Biology
Physics & Astronomy

Exploiting Molecular Vibrations to Probe Chemical Structures & Dynamics in Advanced Materials



By: Amber Krummel
From: Colorado State University
When: Wednesday, August 30, 2017
4:00 PM - 5:00 PM
Where: Dell Butcher Hall
Abstract: The development of advanced materials requires understanding the evolution of the supramolecular structure of self-assembled dye molecules. More specifically the self-assembly of highly conjugated dye molecules are critical to fabricating scaffolding structures, molecular electronics, and optical materials. In addition, organic dyes, including porphyrin-based structures play critical roles in alternative energy technologies including solar photovoltaics. It is crucial to innovate tools with the capability to directly observe molecular structures while having sensitivity to fast solvent fluctuations such that chemical structures and solvent dynamics can ultimately be correlated to device performance. In this talk I will discuss the progress we have made towards applying nonlinear vibrational spectroscopy techniques including two-dimensional infrared (2D IR) spectroscopy and heterodyne-detected vibrational sum frequency generation (HD-VSFG) spectroscopy as tools to directly probe molecular structure of perylene diimide derivatives and porphyrins in bulk fluids and at interfaces. In addition, I will discuss enabling technologies that we have developed in the lab including the design and implementation of our mid-IR OPCPA laser for 2D IR imaging. Host: Professor Christy Landes