Chromoionophoric Pyridinium‐ N ‐phenolate Betaine Dyes | Zendy

Reichardt Christian | Zendy; AsharinFard Siamak | Zendy

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Chromoionophoric Pyridinium‐ N ‐phenolate Betaine Dyes

Author(s) -

Reichardt Christian,

AsharinFard Siamak

Publication year - 1991

Publication title -

angewandte chemie international edition in english

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 5.831

H-Index - 550

eISSN - 1521-3773

pISSN - 0570-0833

DOI - 10.1002/anie.199105581

Subject(s) - hypsochromic shift , betaine , pyridinium , chemistry , absorption (acoustics) , ether , electrolyte , crown ether , photochemistry , medicinal chemistry , inorganic chemistry , nuclear chemistry , organic chemistry , ion , fluorescence , optics , physics , electrode

The halochromism of the crown‐ether‐substituted betaine dyes 1 is very sensitive to the cation size of the added electrolytes. The strongest hypsochromic shift of the longest‐ wavelength UVIVIS absorption results for n = 0 with Na ⊕ , n = 1 with K ⊕ , and n = 2 with Cs ⊕ . Thus, the dyes 1 may be useful as indicators.

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