Citation: Min WENG, ManHua ZHANG, Tao SHEN. Study on the Singlet and Triplet StateElectron Transfer between Hypocrellin A and Aromatic Amines in Solvents of Various Polarity[J]. Chinese Chemical Letters, ;1996, 7(10): 924-927. shu

Study on the Singlet and Triplet StateElectron Transfer between Hypocrellin A and Aromatic Amines in Solvents of Various Polarity

Institute of Photographic Chemistry Academia Sinica P, O, Box 772 Beijing 100101

Received Date: 1 July 1996

In this paper, the singlet and triplet state electron transfer processes between hypocrellin A(HA) and aromatic amines in solvents of various polarity have been studied by fluorescence and time-resolved transient absorption spectra.The results show, in.polar solvent, the quenching of HA fluorescence by aromatic amines results in Stern-Volmer plot, the investigation of transient absorption indicated that triplet-state electron transfer process from ³HA^* to the ground-state of amines occured, and the values of the singlet and triplet state electron transfer rate constant were calculated, however in weak polar solvent, only the triplet-triplet absorption of HA was observed.
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