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Ordered Self‐assembly of Protonated Porphyrin Induced by the Aqueous Environment of Biomimetic Systems
Author(s) -
Andrade Suzana M.,
Costa Sílvia M. B.
Publication year - 2008
Publication title -
annals of the new york academy of sciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.712
H-Index - 248
eISSN - 1749-6632
pISSN - 0077-8923
DOI - 10.1196/annals.1430.046
Subject(s) - porphyrin , aqueous solution , protonation , ionic bonding , fluorescence , chemistry , ionic strength , self assembly , fluorescence correlation spectroscopy , fluorescence spectroscopy , chemical physics , photochemistry , molecule , organic chemistry , ion , optics , physics
Water‐soluble ionic porphyrins show an interesting self‐association pattern in acidic conditions under which highly ordered aggregates are stabilized. Herein we give an overview of the template effect of biological interfaces in tetrakis(4‐sulfonatophenyl)porphyrin TSPP self‐aggregation, in which we point out the possibility of tuning this process by screening the charge repulsion through ionic strength and pH. We give special emphasis to the use of fluorescence lifetime imaging microscopy and of fluorescence correlation spectroscopy to visualize and characterize these molecular aggregates.