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Azaphthalocyanines: Red Fluorescent Probes for Cations
Author(s) -
Novakova Veronika,
Lochman Lukáš,
Zajícová Ivana,
Kopecky Kamil,
Miletin Miroslav,
Lang Kamil,
Kirakci Kaplan,
Zimcik Petr
Publication year - 2013
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201300079
Subject(s) - fluorescence , chemistry , intramolecular force , moiety , supramolecular chemistry , potassium , chelation , stoichiometry , sodium , photochemistry , inorganic chemistry , stereochemistry , crystallography , crystal structure , organic chemistry , physics , quantum mechanics
Light up a red crown : Chelation of sodium and potassium cations by aza[15]crown‐5 switches on strong red fluorescence in azaphthalocyanines. This is due to an inhibition of ultrafast intramolecular charge transfer by coordination of the cations to the donor center. Sodium cations fit well into a cavity of the recognition moiety, while potassium forms supramolecular assemblies of azaphthalocyanines with 1:2 stoichiometry.