Two-dimensional heterodyne-detected vibrational sum frequency generation (2D HD-VSFG) spectra at vapor/water interface were studied by molecular dynamics (MD) simulation with a classical flexible and nonpolarizable model. The present model well describes the spectral diffusion of 2D infrared spectrum of bulk water as well as 2D HD-VSFG at the interface. The effect of isotopic dilution on the 2D HD-VSFG was elucidated by comparing the normal (H2O) water and HOD water. We further performed decomposition analysis of 2D HD-VSFG into the hydrogen-bonding and the dangling (or free) OH vibrations, and thereby disentangled the different spectral responses and spectral diffusion in the 2D HD-VSFG. The present MD simulation demonstrated the role of anharmonic coupling between these modes on the cross peak in the 2D HD-VSFG spectrum.
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7 June 2015
Research Article|
March 16 2015
Molecular dynamics study of two-dimensional sum frequency generation spectra at vapor/water interface Available to Purchase
Tatsuya Ishiyama;
Tatsuya Ishiyama
a)
1Department of Applied Chemistry,
Graduate School of Science and Engineering, University of Toyama
, Toyama 930-8555, Japan
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Akihiro Morita;
Akihiro Morita
b)
2Department of Chemistry,
Graduate School of Science, Tohoku University
, Sendai 980-8578, Japan
and Elements Strategy Initiative for Catalysts and Batteries (ESICB), Kyoto University
, Kyoto 615-8520, Japan
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Tahei Tahara
Tahei Tahara
3
Molecular Spectroscopy Laboratory
, RIKEN and Ultrafast Spectroscopy Research Team, RIKEN Center for Advanced Photonics (RAP), 2-1 Hirosawa, Wako 351-0198, Japan
Search for other works by this author on:
Tatsuya Ishiyama
1,a)
Akihiro Morita
2,b)
Tahei Tahara
3
1Department of Applied Chemistry,
Graduate School of Science and Engineering, University of Toyama
, Toyama 930-8555, Japan
2Department of Chemistry,
Graduate School of Science, Tohoku University
, Sendai 980-8578, Japan
and Elements Strategy Initiative for Catalysts and Batteries (ESICB), Kyoto University
, Kyoto 615-8520, Japan
3
Molecular Spectroscopy Laboratory
, RIKEN and Ultrafast Spectroscopy Research Team, RIKEN Center for Advanced Photonics (RAP), 2-1 Hirosawa, Wako 351-0198, Japan
a)
Electronic address: [email protected]
b)
Electronic address: [email protected]
J. Chem. Phys. 142, 212407 (2015)
Article history
Received:
January 11 2015
Accepted:
February 18 2015
Citation
Tatsuya Ishiyama, Akihiro Morita, Tahei Tahara; Molecular dynamics study of two-dimensional sum frequency generation spectra at vapor/water interface. J. Chem. Phys. 7 June 2015; 142 (21): 212407. https://doi.org/10.1063/1.4914299
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