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Effect of Self‐Assembly of Amphiphilic Redox‐Chromophores on Photoionization Processes
Author(s) -
HumphryBaker Robin,
Braun André M.,
Grätzel Michael
Publication year - 1981
Publication title -
helvetica chimica acta
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.74
H-Index - 82
eISSN - 1522-2675
pISSN - 0018-019X
DOI - 10.1002/hlca.19810640708
Subject(s) - chemistry , chromophore , micelle , amphiphile , photoionization , phenothiazine , redox , aqueous solution , photochemistry , derivative (finance) , critical micelle concentration , self assembly , organic chemistry , ionization , ion , copolymer , medicine , economics , financial economics , pharmacology , polymer
A surfact derivative of phenothiazine was synthesized which is capable of micelle formation in aqueous solution. Concomitantly with micellization, strong changes in the photochemical behaviour occur. In particular, monophotonic photoionization is only observed above the critical micelle concentration (CMC.). Cooperative effects associated with self‐assembly of this amphiphilic redox chromophore leading to local electrostatic barriers are evoked to explain these effects.