Title of article :
Photoinduced electron-transfer reactions and magnetic field effects on the decay rates of a photogenerated biradical from zinc porphyrin–viologen linked compounds in an ionic liquid
Author/Authors :
Tahara، نويسنده , , Hironobu and Yonemura، نويسنده , , Hiroaki and Harada، نويسنده , , Satoko and Nakashima، نويسنده , , Akio and Yamada، نويسنده , , Sunao، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2012
Pages :
7
From page :
42
To page :
48
Abstract :
Fluorescence and transient absorption spectra of zinc-porphyrin (ZnP)–viologen linked compounds with various methylene groups indicate that intramolecular electron-transfer from the singlet or triplet excited state of ZnP to viologen occurred and a biradical was generated in the ionic liquid (1-butyl-3-methylimidazolium tetrafluoroborate) at various temperatures (283–343 K). The decay rate constants of the biradical decreased in 0–0.2∼0.5 T and became constant in 0.2∼0.5–1 T. Unique effects of temperature and methylene chain length on electron-transfer and magnetic field effects were observed and are probably due to the properties of the ionic liquid as compared with benzonitrile.
Journal title :
Chemical Physics Letters
Serial Year :
2012
Journal title :
Chemical Physics Letters
Record number :
1932614
Link To Document :
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