Document Detail


Determination of the formation of dark state via depleted spontaneous emission in a complex solvated molecule.
MedLine Citation:
PMID:  17559198     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
We present a general two-color two-pulse femtosecond pump-dump approach to study the specific population transfer along the reaction coordinate through the higher vibrational energy levels of excited states of a complex solvated molecule via the depleted spontaneous emission. The time-dependent fluorescence depletion provides the correlated dynamical information between the monitored fluorescence state and the SEP "dumped" dark states, and therefore allow us to obtain the dynamics of the formation of the dark states corresponding to the ultrafast photoisomerization processes. The excited-state dynamics of LDS 751 have been investigated as a function of solvent viscosity and solvent polarity, where a cooperative two-step isomerization process is clearly identified within LDS 751 upon excitation.
Authors:
Xunmin Guo; Sufan Wang; Andong Xia; Hongmei Su
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2007-06-09
Journal Detail:
Title:  The journal of physical chemistry. A     Volume:  111     ISSN:  1089-5639     ISO Abbreviation:  J Phys Chem A     Publication Date:  2007 Jul 
Date Detail:
Created Date:  2007-06-28     Completed Date:  2007-09-17     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9890903     Medline TA:  J Phys Chem A     Country:  United States    
Other Details:
Languages:  eng     Pagination:  5800-5     Citation Subset:  IM    
Affiliation:
The State Key Laboratory of Molecular Reaction Dynamics, and Beijing National Laboratory for Molecular Sciences (BNLMS), Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, People's Republic of China.
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MeSH Terms
Descriptor/Qualifier:
Molecular Structure
Organic Chemicals / chemistry
Solvents / chemistry*
Spectrophotometry
Time Factors
Chemical
Reg. No./Substance:
0/Organic Chemicals; 0/Solvents; 122168-67-6/LDS 751

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