Article (Scientific journals)
Singlet oxygen production by UV and visible photoexcited porphyrins under different states of aggregation
Seret, Alain; Gandin, Ezio; Van de Vorst, Albert
1986In Photobiochemistry and Photobiophysics, 12, p. 259-266
Peer reviewed
 

Files


Full Text
PhotobiochemPhotobiophys86_12_259.pdf
Publisher postprint (424.46 kB)
Revue plus éditée
Request a copy

All documents in ORBi are protected by a user license.

Send to



Details



Keywords :
Photosensitization; Porphyrin; Singlet oxygen; Quantum yield; Aggregation; Tryptophan
Abstract :
[en] Tryptophan photosensitization was used to determine the quantum yield of singlet oxygen production by porphyrins irradiated with ultraviolet or visible light in phosphate buffer at pH 7.0. From a preliminary study of aggregation of these dyes, it was established that uroporphyrin, hematoporphyrin and deuteroporphyrin allowed to investigate the behaviour of monomers, dimers and higher aggregates, respectively. The photosensitization results show that monomers and polymers produce singlet oxygen with very similar yields. Inclusion of Zn2+ and Cu2+ metal ions on deuteroporphyrin inhibits partially (factor 3) and totally the singlet oxygen production.
Disciplines :
Physics
Chemistry
Biochemistry, biophysics & molecular biology
Author, co-author :
Seret, Alain ;  Université de Liège - ULiège > Physique Expérimentale
Gandin, Ezio;  Université de Liège - ULiège > Physique Expérimentale
Van de Vorst, Albert;  Université de Liège - ULiège > Physique Expérimentale
Language :
English
Title :
Singlet oxygen production by UV and visible photoexcited porphyrins under different states of aggregation
Publication date :
1986
Journal title :
Photobiochemistry and Photobiophysics
ISSN :
0165-8646
Publisher :
Elsevier Science Publishers Bv
Volume :
12
Pages :
259-266
Peer reviewed :
Peer reviewed
Available on ORBi :
since 28 December 2008

Statistics


Number of views
172 (13 by ULiège)
Number of downloads
0 (0 by ULiège)

Scopus citations®
 
13
Scopus citations®
without self-citations
13

Bibliography


Similar publications



Contact ORBi