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Geoffrey Hallas

University of Leeds

Publishes on Dyeing and Modifying Textile Fibers, Photochemistry and Electron Transfer Studies, Photochromic and Fluorescence Chemistry. 148 papers and 2.6k citations.

148Publications
2.6kTotal Citations

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Top publicationsby citations

The Effects of Terminal Groups in 4–Aminoazobenzene and Disperse Dyes Related Thereto
Geoffrey Hallas|Journal of the Society of Dyers and Colourists|1979
Cited by 97

The changes brought about by structural variations on the properties of disperse dyes derived from 4–aminoazobenzene and related compounds are described and discussed, with particular reference to modifications in terminal substituents. Relationships between electronic effects, steric effects, tautomeric equilibria and colour, and between fastness properties and dye structure are examined.