Ultrafast fluorescence risetime of a polyatomic molecule in solution and under collision-free conditions
โ Scribed by B. Kopainsky; W. Kaiser
- Publisher
- Elsevier Science
- Year
- 1979
- Tongue
- English
- Weight
- 424 KB
- Volume
- 66
- Category
- Article
- ISSN
- 0009-2614
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โฆ Synopsis
RcceGd 23 51zy 1979; in final form I0 July 1979 The fluorescence rise in solution and in the vapor phase was investigated for the same molecule. dimethl I-POPOP. After optical excitation the structured fluorescence spectrum of the solution evolves in a time shorter than 2 ps. Likewise the fluerescence in the vapor phase rises within less than 2 ps. This finding su_ aaesfs rapid intramolecular viirational relaxation in S I-For exitations with a large excess energy of ll 000 cm_1 the relaxation to fluorescing states in S1 is still fast under collisionfree conditions.
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