Effect of oligomerization on the photochemical properties of silicon octaphenoxyphthalocyanine

Authors
Maree, MD Nyokong, T
Citation
Md. Maree et T. Nyokong, Effect of oligomerization on the photochemical properties of silicon octaphenoxyphthalocyanine, J PHOTOCH A, 142(1), 2001, pp. 39-46
Citations number
27
Categorie Soggetti
Physical Chemistry/Chemical Physics
Journal title
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
ISSN journal
10106030 → ACNP
Volume
142
Issue
1
Year of publication
2001
Pages
39 - 46
Database
ISI
SICI code
1010-6030(20010820)142:1<39:EOOOTP>2.0.ZU;2-E
Abstract
The photochemical properties of silicon octaphenoxyphthalocyanines (SiOPPc) oligomerized were studied in dimethylsulfoxide (DMSO) solutions. Oligomers containing 2-5 and 9 SiOPPc rings linked with terephthalate linkages were synthesized. Singlet oxygen quantum yields were found to be in the range 0. 11-0.34, and increased with the number of rings up to five rings, a decreas e in the quantum yield was observed for nine rings. This is explained in te rms of the high aggregation of the oligomer containing nine rings. (C) 2001 Elsevier Science B.V. All rights reserved.