Ultrafast Photodynamics of Glucose.
Ultrafast Photodynamics of Glucose.
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葡萄糖的超快光动力学
DOI:
10.1021/acs.jpcb.7b08602
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发表时间:
2018
期刊:
影响因子:
--
通讯作者:
R. Mitric
中科院分区:
文献类型:
--
作者:
J. Petersen;J. O. Lindner;R. Mitric
We have investigated the photodynamics of β-d-glucose employing our field-induced surface-hopping (FISH) method, which allows us to simulate the coupled electron–nuclear dynamics, explicitly including nonadiabatic effects and light-induced excitation. Our results reveal that from the initially populated S1and S2states, glucose returns nonradiatively to the ground state within about 200 fs. This takes place mainly via conical intersections (CIs), whose geometries in most cases involve the elongation of a single O–H bond, whereas in some instances, ring-opening due to dissociation of a C–O bond is observed. Experimentally, excitation to a distinct excited electronic state is improbable due to the presence of a dense manifold of states bearing similar oscillator strengths. Our FISH simulations, explicitly including a UV laser pulse of 6.43 eV photon energy, reveal that after initial excitation, the population is almost equally spread over several close-lying electronic states. This is followed by a fast nonradiative decay on the time scale of 100–200 fs, with the final return to the ground state proceeding via the S1state through the same types of CIs as observed in the field-free simulations.
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DOI:
--
发表时间:
2005
期刊:
影响因子:
--
作者:
J. Simons;R. A. Jockusch;P. Çarçabal;Isabel Huenig;R. Kroemer;N. Macleod;L. Snoek
通讯作者:
L. Snoek
DOI:
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发表时间:
2006
期刊:
影响因子:
--
作者:
C. O. D. Silva
通讯作者:
C. O. D. Silva
DOI:
--
发表时间:
2011
期刊:
影响因子:
--
作者:
R. Mitrić;J. Petersen;V. Bonačić‐Koutecký
通讯作者:
V. Bonačić‐Koutecký
影响因子:
2.9
作者:
T. Schmid;M. Himmelsbach;W. Buchberger
通讯作者:
W. Buchberger
DOI:
10.1039/c4cp03653k
发表时间:
2014-09
期刊:
Physical chemistry chemical physics : PCCP
影响因子:
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作者:
D. Murdock;S. J. Harris;Joel Luke;M. Grubb;A. Orr-Ewing;M. Ashfold
通讯作者:
D. Murdock;S. J. Harris;Joel Luke;M. Grubb;A. Orr-Ewing;M. Ashfold