Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
178447 | Dyes and Pigments | 2006 | 8 Pages |
Abstract
New cyanine dyes including monomethine cyanine dyes (simple cyanine dyes) and trimethine cyanine dyes (carbocyanine dyes) incorporating benzo[2,3-b; 2′,3′-b′]bispyrazolo[4,5-b]-1,4-(oxa-, thia-, and pyra)-zine-6,12-dione were prepared. Structure-spectra studies were carried out via measuring the electronic visible absorption spectra of these dyes in 95% ethanol. Structural confirmations were determined through elemental analysis, IR, 1H NMR spectroscopy and MS spectral data at the Micro Analytical Center, Cairo University.
Keywords
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Chemical Engineering (General)
Authors
H.A. Shindy, M.A. El-Maghraby, Fayez M. Eissa,