ORGN 366 |
| A series of azohydroxypyridone disperse dyes containing a fluorosulfonyl group in their structures were synthesised and their spectral properties were investigated. Specially, the azohydroxypyridone dyes containing a nitro group instead of a fluorosulfonyl group at para position to azo group in diazo component were also synthesised in order to compare their spectral properties with those of fluorosulfonyl analogues. The fluorosulfonyl substituted derivatives absorb maximally at shorter wavelengths and tinctorially weaker than the nitroarylazopyridone dyes although the former dyes have higher molar extinction coefficients. Also, the synthesised dyes exhibit positive solvatochromism so that the absorption band of dyes moves toward longer wavelengths as the polarity of the solvent increases and the molecular computational method provided reasonable predictions in the direction of solvatochromism for the dyes prepared. |
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Heterocycles and Aromatics, Molecular Recognition and Self Assembly
8:00 PM-10:00 PM, Tuesday, April 8, 2008 Morial Convention Center -- Hall A, Poster
Division of Organic Chemistry |