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CIDEP of transient radical-ion pair: Photolysis of N,N,N′,N′-tetramethyl-p-phenylenediamine in 2-propanol

✍ Scribed by Hisao Murai; Keiji Kuwata

Publisher: Elsevier Science
Year: 1989
Tongue: English
Weight: 351 KB
Volume: 164
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(89)85259-5

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✦ Synopsis

Anomalously spin-polarized solvated electrons produced by photoejection from N,N,N',N'-tetramethyl-pphenylenediamine in 2-propanol were detected by using a time-resolved ESR technique. The emission/absorption pattern of the CIDEP spectrum was observed immediately after laser excitation; thereafter it gradually changed to enhanced absorption. These two patterns may be attributable to the appearance of the exchange interaction in a radical-ion pair and the ordinary S-T, mixing, respectively. These data lead to the conclusion that the sign of J is positive in this system.

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