Crown-containing styryl dyes .13. The nature of the heterocysts moiety, complexation, and electronic absorption and fluorescence-spectra of trans-isomers and cis-isomers of photochromic 15-crown-5-ethersстатья
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Дата последнего поиска статьи во внешних источниках: 27 мая 2015 г.
Аннотация:New crown ether styryl dyes containing various heterocyclic moieties and substituents were synthesized. The cia and trans isomers of crown ether styryl dyes and their complexes with metal cations were characterized by their absorption and fluorescence spectra. Based on an analysis of the spectral parameters and the shifts of the absorption and fluorescence maxima upon photoisomerization and complexation, the effects of the nature and structure of the heterocyclic moiety on the photochromism of styryl ionophores were revealed.