Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
177771 | Dyes and Pigments | 2008 | 7 Pages |
Abstract
Novel, symmetrical and asymmetrical, 3,6-bis-hetarylazo-2,5,7-triaminopyrazolo[1,5-a]pyrimidine heterocyclic disazo dyes were synthesized via cyclization from substituted hetarylazomalononitrile precursors with various substituted hetarylazopyrazole compounds. The synthesized heterocyclic disazo dyes were characterized using FT-IR, 1H NMR, mass spectroscopy and elemental analysis. The solvatochromic effects of the dyes in various organic solvents were studied.
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Physical Sciences and Engineering
Chemical Engineering
Chemical Engineering (General)
Authors
Pi Chen Tsai, Ing Jing Wang,