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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 9, Number 4
BKCSDE 9(4)
April 20, 1988 

 
Title
Rotational Photoisomerization of Thioamide, N-5-Trifluoromethyl-6-methoxy-1-thionaphthoyl-N-methylglycine
Author
Sang Chul Shim*, Sang Jin Lee
Keywords
Abstract
A thioamide, N-5-trifluoromethyl-6-methoxy-1-thionaphthoyl-N-m ethylglycine, undergoes trans ↔ cis photoisomerization around C-N bound in solution. Azulene quenching studies showed the photoisomerization to proceed via both singlet and triplet excited states.The total quantum yield of the trans → cis photoisomerization is about 0.26, 0.14 from the singlet excited state and 0.12 from the triplet excited state. Intersystem crossing and internal conversion quantum yields were calculated from sensitized photostationary state and a plausible mechanism is proposed.
Page
236 - 240
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