Metallochromic merocyanines of 8-hydroxyquinoline series

• Published in: Dyes and pigments Vol. 58; no. 1; pp. 83 - 91
• Main Authors: Kovtun, Yu.P, Prostota, Ya.O, Tolmachev, A.I
• Format: Journal Article
• Language: English
• Published: Oxford Elsevier Ltd 01-07-2003; Elsevier
• Subjects: 8-Hydroxyquinoline; Applied sciences; Chemical industry and chemicals; Dyes, pigments; Exact sciences and technology; Industrial chemicals; Merocyanines; Metallochromism; Metallocomplexes; Metallofluorochromism; 8-Hydroxyquinoline; Merocyanines; Metallochromism; Metallofluorochromism; Metallocomplexes; Divalent metal Complexes; Cadmium II Complexes; Sulfur nitrogen heterocycle; Zinc II Complexes; Nitrogen heterocycle; Merocyanine; Organic ligand; Quinoline derivatives; Mercury II Complexes; Transition metal Complexes; Benzothiazole derivatives; Bicyclic compound; Aromatic compound; Indole derivatives; Chemical synthesis
• ISSN: 0143-7208; 1873-3743
• DOI: 10.1016/S0143-7208(03)00038-X

A number of merocyanines based on the 5- and 7-substituted 8-hydroxyquinoline nucleus have been synthesized, and the metallochromic and some metallofluorochromic properties of the prepared dyes have been studied. The most pronounced metallochromic effects are observed for the dyes containing low-basicity end nuclei. Maximum metallofluorochromic effects were demonstrated by the 7-substituted derivatives of 8-hydroxyquinoline upon interaction with Zn2+, Cd2+, and Hg2+ cations. A possible mechanism of metal binding is discussed.