SYNTHESIS AND SOLVATOCHROMIC BEHAVIOR OF NEW ASYMMETRICAL MONO-(TRI)-METHINE CYANINE DYES

Authors
ELAAL RMA ELLATIF FMA KORAIEM AIM
Citation
Rma. Elaal et al., SYNTHESIS AND SOLVATOCHROMIC BEHAVIOR OF NEW ASYMMETRICAL MONO-(TRI)-METHINE CYANINE DYES, Proceedings of the Indian Academy of Sciences. Chemical sciences, 110(4), 1998, pp. 433-444
Citations number
26
Categorie Soggetti
Chemistry
Journal title
Proceedings of the Indian Academy of Sciences. Chemical sciences → ACNP
ISSN journal
02534134
Volume
110
Issue
4
Year of publication
1998
Pages
433 - 444
Database
ISI
SICI code
0253-4134(1998)110:4<433:SASBON>2.0.ZU;2-1
Abstract
6-Amino-5-cyano-3-methyl-1,4-diarylpyrano [2,3-c]pyrazole derivatives were prepared via the interaction of alpha,beta-unsaturated nitriles w ith 3-methyl-1-phenylpyrazol-5-one as starting materials in the synthe sis of new asymmetrical mono-(tri)methine cyanine dyes. The new cyanin es were characterised by elemental analysis, IR and H-1-NMR spectral d ata. The visible absorption spectra of some selected dyes were investi gated in pure and mixed solvents as well as in aqueous buffer solution s.