Accurately simulating the linear and nonlinear electronic spectra of condensed phase systems and accounting for all physical phenomena contributing to spectral line shapes presents a significant challenge. Vibronic transitions can be captured through a harmonic model generated from the normal modes of a chromophore, but it is challenging to also include the effects of specific chromophore–environment interactions within such a model. We work to overcome this limitation by combining approaches to account for both explicit environment interactions and vibronic couplings for simulating both linear and nonlinear optical spectra. We present and show results for three approaches of varying computational cost for combining ensemble sampling of chromophore–environment configurations with Franck–Condon line shapes for simulating linear spectra. We present two analogous approaches for nonlinear spectra. Simulated absorption spectra and two-dimensional electronic spectra (2DES) are presented for the Nile red chromophore in different solvent environments. Employing an average Franck–Condon or 2DES line shape appears to be a promising method for simulating linear and nonlinear spectroscopy for a chromophore in the condensed phase.
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28 February 2021
Research Article|
February 24 2021
Explicit environmental and vibronic effects in simulations of linear and nonlinear optical spectroscopy
Special Collection:
Special Collection in Honor of Women in Chemical Physics and Physical Chemistry
Sapana V. Shedge
;
Sapana V. Shedge
1
Chemistry and Chemical Biology, University of California Merced
, Merced, California 95343, USA
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Tim J. Zuehlsdorff
;
Tim J. Zuehlsdorff
2
Department of Chemistry, Oregon State University
, Corvallis, Oregon 97331, USA
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Ajay Khanna
;
Ajay Khanna
1
Chemistry and Chemical Biology, University of California Merced
, Merced, California 95343, USA
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Stacey Conley;
Stacey Conley
1
Chemistry and Chemical Biology, University of California Merced
, Merced, California 95343, USA
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Christine M. Isborn
Christine M. Isborn
a)
1
Chemistry and Chemical Biology, University of California Merced
, Merced, California 95343, USA
a)Author to whom correspondence should be addressed: [email protected]
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a)Author to whom correspondence should be addressed: [email protected]
Note: This paper is part of the JCP Special Collection in Honor of Women in Chemical Physics and Physical Chemistry.
J. Chem. Phys. 154, 084116 (2021)
Article history
Received:
November 19 2020
Accepted:
January 25 2021
Citation
Sapana V. Shedge, Tim J. Zuehlsdorff, Ajay Khanna, Stacey Conley, Christine M. Isborn; Explicit environmental and vibronic effects in simulations of linear and nonlinear optical spectroscopy. J. Chem. Phys. 28 February 2021; 154 (8): 084116. https://doi.org/10.1063/5.0038196
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