Photochemical properties of C60. Triplet-excited C60 quenching by electron acceptors TCNQ and TCNE in solution. Laser photolysis study
1993; Elsevier BV; Volume: 208; Issue: 5-6 Linguagem: Inglês
10.1016/0009-2614(93)87168-3
ISSN1873-4448
AutoresВ. А. Надточенко, Nikolai N. Denisov, Igor V. Rubtsov, A. S. Lobach, A. P. Moravskiǐ,
Tópico(s)Polymer Nanocomposite Synthesis and Irradiation
ResumoThe quenching of triplet-excited 3C60 by electron acceptors TCNQ and TCNE has been established in nonpolar toluene and moderately polar benzonitrile solutions. The quenching constants kq are 5.5 × 109 in toluene, 2.2 × 109 in benzonitrile for TCNQ and 7.9 × 105 in toluene, 4.2 × 108 (M s)−1 in benzonitrile for TCNE. The 3C60 quenching can be explained by triplet exciplex formation. The time-resolved spectra of the C60/TCNE system exhibit a well pronounced charge-transfer excited state [Cδ60 … TCNEδ−] in benzonitrile.
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