Ultrabroadband 2D electronic spectroscopy as a tool for direct visualization of pathways of energy flow
Author(s)
Schlau-Cohen, Gabriela S
Son, Minjung
Date Issued
2017
Journal
Physical Chemistry of Semiconductor Materials and Interfaces XVI
Publisher
SPIE
Citation
Schlau-Cohen, Gabriela, and Son, Minjung Son “Ultrabroadband 2D Electronic Spectroscopy as a Tool for Direct Visualization of Pathways of Energy Flow.” Edited by Hugo A. Bronstein and Felix Deschler. Physical Chemistry of Semiconductor Materials and Interfaces XVI (August 2017) © 2017 SPIE
Version
Final published version
Abstract
Two-dimensional electronic spectroscopy (2DES) has emerged as an incisive tool for mapping out energy relaxation pathways in complex molecular systems by determining correlation maps between the excitation and emission frequencies. Its enhanced spectral as well as temporal resolution offer new insights into coupling and energy transfer between closely-spaced energy states, which are often hidden in a one-dimensional transient spectrum. However, a major drawback of the current 2DES technique is that the spectral window of detection is directly limited to the laser bandwidth used, which leads to an incomplete visualization of the full energy landscape of the system. As a solution to this limitation, we present an ultrabroadband 2DES apparatus utilizing a 8-fs, 185-nm bandwidth supercontinuum that covers the entire visible region. We demonstrate the utility of our setup by measuring the 2D spectra of laser dyes absorbing at different regions of the laser spectrum, and the major light-harvesting complex of spinach.
MIT Department
Massachusetts Institute of Technology. Department of Chemistry
Terms of Use
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Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1117/12.2273417
