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Effect of a high magnetic field on the decay rate of chain-linked intramolecular exciplex fluorescence

✍ Scribed by Hong Cao; Katsuji Miyata; Tomoyuki Tamura; Yoshihisa Fujiwara; Yoshifumi Tanimoto; Masaharu Okazaki; Kaoru Iwai; Masao Yamamoto

Publisher: Elsevier Science
Year: 1995
Tongue: English
Weight: 332 KB
Volume: 246
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(95)01066-i

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✦ Synopsis

The effect of a high magnetic field ( < 14 T) on the intramolecular exciplex fluorescence generated from a phenanthrene and dimethylaniline chain-linked molecule is studied in acetonitrile. On increasing the magnetic field from zero to = 1 T, the fluorescence decay rate decreases steeply and then increases gradually up to = 14 T. The high magnetic field (> 1 T) enhances the singlet-triplet intersystem crossing of an intramolecular radical ion pair intervening in the reaction (Ag mechanism).

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