Cooperative static quenching of the S-1-S-0 fluorescence of tetrasulfonated aluminum phthalocyanine by azaferrocene and an organic donor (imidazole, 4-aminopyridine)

Authors
Zakrzewski, J Giannotti, C Delaire, J
Citation
J. Zakrzewski et al., Cooperative static quenching of the S-1-S-0 fluorescence of tetrasulfonated aluminum phthalocyanine by azaferrocene and an organic donor (imidazole, 4-aminopyridine), INORG CHEM, 40(5), 2001, pp. 831-835
Citations number
23
Categorie Soggetti
Inorganic & Nuclear Chemistry
Journal title
INORGANIC CHEMISTRY
ISSN journal
00201669 → ACNP
Volume
40
Issue
5
Year of publication
2001
Pages
831 - 835
Database
ISI
SICI code
0020-1669(20010226)40:5<831:CSQOTS>2.0.ZU;2-O
Abstract
The S-1-S-0 fluorescence of tetrasulfonated aluminum phthalocyanine (AlPcS4 3-) is quenched by azaferrocene (AF) by both dynamic and static quenching, the last being due to the complexation of two molecules of AF by the phthal ocyanine (presumably to its axial sites). Fluorescence quenching studies re vealed that some other nitrogen ligands can cooperate with AF, giving nonfl uorescent, mixed hexacoordinate adducts. This leads to "cooperative" static quenching observed for imidazole and 4-aminopyridine.