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A time-resolved electron spin resonance study of the triplet states of quinoline, isoquinoline, their protonated cations and naphthalene

✍ Scribed by Mikio Yagi; Akinori Komura; Jiro Higuchi

Publisher: Elsevier Science
Year: 1988
Tongue: English
Weight: 364 KB
Volume: 148
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(88)87256-7

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✦ Synopsis

Transient ESR spectra have been observed for the lowest triplet states of naphthalene, quinoline (QN), quinolinium (QNH+), isoquinoline (iso-QN) and isoquinolinium (iso-QNH+) in ethanol at 77 K using a time-resolved ESR technique. With the aid of computer simulations, it is concluded that, following the protonation of QN, the sublevel initially populated by S,+T, intersystem crossing changes from T,, in QN to T, in QNH+ (y and z are close to the long and short in-plane molecular axes, respectively).

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