期刊
DYES AND PIGMENTS
卷 82, 期 1, 页码 84-89出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.dyepig.2008.11.007
关键词
1,4-Diethyl-1,2,3,4-tetrahydro-7-hydroxyquinoxalin-6-carboxaldehyde; Coumarins; Synthesis; Fluorescence; Thermal stability; Spectral characteristics
1,4-Diethyl-1,2,3,4-tetrahydro-7-hydroxyquinoxalin-6-carboxaldehyde was synthesized and condensed with substituted active methylene compounds to obtain a series of novel coumarin compounds. Solutions of the dyes in various solvents exhibited an orange hue and brilliant fluorescence and displayed high thermal stability, as determined using thermogravimetric analysis. The dye having a heterocyclic benzimidazole ring as an electron withdrawing system was selected as a representative compound for comparison of its spectral characteristics with known analogues. (c) 2008 Elsevier Ltd. All rights reserved.
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