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Title: Measuring Photochemical Kinetics in Submonolayer Films by Transient ATR Spectroscopy on a Multimode Planar Waveguide

Abstract

Understanding the kinetics of reactions in molecular thin films can aid in the molecular engineering of organic photovoltaics and biosensors. Using two analytical methods, transient absorbance spectroscopy (TAS) and attenuated total reflectance (ATR), in a relatively simple arrangement when compared with previous TAS/ATR instruments to interrogate molecular structure and photochemistry at interfaces. The multimode planar waveguide geometry provides a significant path length enhancement relative to a conventional transmission geometry, making it feasible to perform measurements on low-surface-coverage films. This work demonstrates that TAS/ATR can be used to probe structure and photochemical kinetics in molecular films at extremely low surface coverages.

Authors:
 [1];  [1];  [1]
  1. Univ. of Arizona, Tucson, AZ (United States). Dept. of Chemistry and Biochemistry
Publication Date:
Research Org.:
Energy Frontier Research Centers (EFRC); Center for Interface Science: Solar Electric Materials (CISSEM)
Sponsoring Org.:
USDOE
OSTI Identifier:
1065538
DOE Contract Number:  
SC0001084
Resource Type:
Journal Article
Journal Name:
Analytical Chemistry
Additional Journal Information:
Journal Volume: 83(14); Journal Issue: 14; Related Information: CISSEM partners with the University of Arizona (lead); Georgia Institute of Technology; National Renewable Energy Laboratory; Princeton University; University of Washington; Journal ID: ISSN 0003-2700
Publisher:
American Chemical Society (ACS)
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; solar (photovoltaic), electrodes - solar, charge transport, synthesis (novel materials), synthesis (self-assembly), synthesis (scalable processing)

Citation Formats

Simon, Anne M., Marucci, Nicole E., and Saavedra, S. Scott. Measuring Photochemical Kinetics in Submonolayer Films by Transient ATR Spectroscopy on a Multimode Planar Waveguide. United States: N. p., 2011. Web. doi:10.1021/ac2011526.
Simon, Anne M., Marucci, Nicole E., & Saavedra, S. Scott. Measuring Photochemical Kinetics in Submonolayer Films by Transient ATR Spectroscopy on a Multimode Planar Waveguide. United States. doi:10.1021/ac2011526.
Simon, Anne M., Marucci, Nicole E., and Saavedra, S. Scott. Fri . "Measuring Photochemical Kinetics in Submonolayer Films by Transient ATR Spectroscopy on a Multimode Planar Waveguide". United States. doi:10.1021/ac2011526.
@article{osti_1065538,
title = {Measuring Photochemical Kinetics in Submonolayer Films by Transient ATR Spectroscopy on a Multimode Planar Waveguide},
author = {Simon, Anne M. and Marucci, Nicole E. and Saavedra, S. Scott},
abstractNote = {Understanding the kinetics of reactions in molecular thin films can aid in the molecular engineering of organic photovoltaics and biosensors. Using two analytical methods, transient absorbance spectroscopy (TAS) and attenuated total reflectance (ATR), in a relatively simple arrangement when compared with previous TAS/ATR instruments to interrogate molecular structure and photochemistry at interfaces. The multimode planar waveguide geometry provides a significant path length enhancement relative to a conventional transmission geometry, making it feasible to perform measurements on low-surface-coverage films. This work demonstrates that TAS/ATR can be used to probe structure and photochemical kinetics in molecular films at extremely low surface coverages.},
doi = {10.1021/ac2011526},
journal = {Analytical Chemistry},
issn = {0003-2700},
number = 14,
volume = 83(14),
place = {United States},
year = {2011},
month = {7}
}