PHOTOPHYSICAL AND PHOTOCHEMICAL PROPERTIES OF PORPHYRIN AGGREGATES

Authors
SIGGEL U BINDIG U ENDISCH C KOMATSU T TSUCHIDA E VOIGT J FUHRHOP JH
Citation
U. Siggel et al., PHOTOPHYSICAL AND PHOTOCHEMICAL PROPERTIES OF PORPHYRIN AGGREGATES, Berichte der Bunsengesellschaft fur Physikalische Chemie, 100(12), 1996, pp. 2070-2075
Citations number
30
Categorie Soggetti
Chemistry Physical
Journal title
Berichte der Bunsengesellschaft fur Physikalische Chemie
ISSN journal
00059021 → ACNP
Volume
100
Issue
12
Year of publication
1996
Pages
2070 - 2075
Database
ISI
SICI code
0005-9021(1996)100:12<2070:PAPPOP>2.0.ZU;2-8
Abstract
In aqueous media substituted protoporphyrins and amphiphilic tetraphen ylporphyrins aggregate to fibers, tubules, helical ribbons and sheets. Six different types are presented, characterized by the excitonic shi fts in the electronic absorption spectra. On excitation, the aggregate s from octopusporphyrin show fluorescence and population of the triple t state. In other aggregates fluorescence, triplet state or both are e ffectively quenched.