Triplet state quenching by ferrocene

✍ Scribed by A. Farmilo; F. Wilkinson

• Publisher: Elsevier Science
• Year: 1975
• Tongue: English
• Weight: 501 KB
• Volume: 34
• Category: Article
• ISSN: 0009-2614
• DOI: 10.1016/0009-2614(75)85565-5

✦ Synopsis

Rate constmts have been menrurcd

for quenching by ferrocene of the triplet states of organic compounds as a function of their triplet energies using the technique olkser photolysis. Although quenching by ferroccne of those triplet states with energies in the range 1.5000-24000 cm-1 is hi_hly eKicient [kQ = (6 f 1) X IO9 P mol-'s-l 1, there is a marked fall : in quenching efficiency for triplet states with merges less than 14000 cm -I. The quenching behaviour is shown to be that expected for "non-vertical" electronic energy transfer to the geome*flicaIly distorted lowest ;riplet state of ferrocene which would be consistent with this state kaving an absorption maximum at = 14000 cm-'.