✦ LIBER ✦
Photochemical properties of C60. Triplet-excited C60 quenching by electron acceptors TCNQ and TCNE in solution. Laser photolysis study
✍ Scribed by Victor A. Nadtochenko; Nikolai N. Denisov; Igor V. Rubtsov; Anatolii S. Lobach; Alexander P. Moravskii
- Publisher
- Elsevier Science
- Year
- 1993
- Tongue
- English
- Weight
- 479 KB
- Volume
- 208
- Category
- Article
- ISSN
- 0009-2614
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✦ Synopsis
The quenching of triplet-excited )C6e by electron acceptors TCNQ and TCNE has been established in nonpolar toluene and moderately polar benzonitrile solutions. The quenching constants k, are 5.5 x IO' in toluene, 2.2 x 10' in benzonitrile for TCNQ and 7.9~ IO' in toluene, 4.2 x 10' (M s)-' in benxonitrile for TCNE. The 'C, quenching can be explained by triplet exciplex formation. The time-resolved spectra of the C&/TCNE system exhibit a well pronounced charge-transfer excited state [Cd2 . ..TCNEd-] in benzonitrile.