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Spectroscopic study of the picosecond photoisomerization of stilbene

✍ Scribed by B.I. Greene; R.M. Hochstrasser; R.B. Weisman

Publisher
Elsevier Science
Year
1979
Tongue
English
Weight
372 KB
Volume
62
Category
Article
ISSN
0009-2614

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✦ Synopsis

New aspects of the photoisomerization dynamics of ethylenic double bonded systems are elucida?ed via picosecond timeresolved esperiments on trans-and cis-stilbene in room temperature heunne solution. For tmns, but not cis, 3. tnnsient spectrum peaked at 585 nm was generated immediately after excitation by a 265 nm pulse. The spectrum narrowed over the fast 35 ps zmd its intea,raJ decayed exponentialIy. f = 90 + 5 ps. The former decay is mterpreted as relnation of the opticrrlly generated vrbrational energy excess; the latter as the decay time of trans ('B) into twisted forms.

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