Photoinduced charge injection from excited triplet hypocrellin B into TiO2colloid in ethanol

Authors
Wu, T Shen, JQ Tian, CH Song, AM Li, W Chen, S Zhang, MH Shen, T
Citation
T. Wu et al., Photoinduced charge injection from excited triplet hypocrellin B into TiO2colloid in ethanol, CHIN J CHEM, 18(5), 2000, pp. 770-772
Citations number
9
Categorie Soggetti
Chemistry
Journal title
CHINESE JOURNAL OF CHEMISTRY
ISSN journal
1001604X → ACNP
Volume
18
Issue
5
Year of publication
2000
Pages
770 - 772
Database
ISI
SICI code
1001-604X(200009/10)18:5<770:PCIFET>2.0.ZU;2-3
Abstract
Photosensitization of TiO2 colloid by hypocrellin B (HB), a natural photody namic pigment with extremely high photostability, has been studied by surfa ce enhanced Raman spectroscopy (SERS), laser flash photolysis and electron paramagnetic resonance (EPR) techniques. The photosensitization of TiO2 occ urred practically from the excited triplet dye and the electron injection r ate constant is 1.3 x 10(6) s(-1). The influences of donor and acceptor on the electron injection were investigated.