✦ LIBER ✦

Estimation of extinction coefficient and radiative lifetime of a free radical, p-aminophenylthiyl

✍ Scribed by Shin-ichi Ishizaka; Masahiro Kotani

Publisher: Elsevier Science
Year: 1987
Tongue: English
Weight: 300 KB
Volume: 139
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(87)80156-2

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✦ Synopsis

The extinction coefficient and radiative lifetime of the transient free radical p-aminophenylthiyl, which exhibits laser oscillation, have been estimated based on the observation of laser bleaching at one wavelength and the appearance of a transient absorption at another wavelength. It is found that the molar (decadic) extinction coefticient at the 560 nm absorption peak is (1.0-1.7) x lo4 P/mol cm (in diethyl ether) and the radiative lifetime of the first doublet excited state is 40 ns, within a factor of three.

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