Energy Relaxation and Structural Dynamics of Protons in Water/DMSO Mixtures.
Energy Relaxation and Structural Dynamics of Protons in Water/DMSO Mixtures.
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DOI:
10.1021/acs.jpcb.8b06938
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发表时间:
2018-11-01
期刊:
影响因子:
--
通讯作者:
Bakker HJ
中科院分区:
文献类型:
--
作者:
Sofronov OO;Bakker HJ
We investigate the structure and dynamics of proton solvation structures in mixed water/dimethyl sulfoxide (DMSO) solvents using two-color mid-infrared femtosecond pump–probe spectroscopy. At a water fraction below 20%, protons are mainly solvated as (DMSO-H)+ and (DMSO-H)+-H2O structures. We find that excitation of the OH-stretch vibration of the proton in (DMSO-H)+-H2O structures leads to an ultrafast contraction of the hydrogen bond between (DMSO-H)+ and H2O. This excited state relaxes rapidly with T1 = 95 ± 10 fs and leads in part to a strong local heating effect and in part to predissociation of the protonated cluster into (DMSO-H)+ and water monomers.
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影响因子:
16.6
作者:
Dahms, Fabian;Costard, Rene;Elsaesser, Thomas
通讯作者:
Elsaesser, Thomas
影响因子:
3.3
作者:
Lotze, S.;Groot, C. C. M.;Bakker, H. J.
通讯作者:
Bakker, H. J.
影响因子:
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作者:
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通讯作者:
Tokmakoff, Andrei
DOI:
10.1039/f29787402256
发表时间:
1978-01-01
期刊:
JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS II
影响因子:
--
作者:
LEUCHS, M;ZUNDEL, G
通讯作者:
ZUNDEL, G
影响因子:
3.3
作者:
Liu, Liyuan;Bakker, Huib J.
通讯作者:
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