Abstract
Reactions of chlorinated silica gel with thienyllithium and its derivatives gave silica gels modified by organic fragments. By successive chemical transformations of the latter immobilized thienyl-contaning azo pigments were obtained. Azo pigments can also be immobilized on silica gel surface through reactions with 2,4,6-trichloro-1,3,5-triazine. Silica gels with grafted azo pigments are characterized by high resistance to light and washing.
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Chirakadze, G.G., Geliashvili, Z.E. & Razmadze, T.O. Immobilization of Thienyl-Containing Azo Pigments on Silica Gel Surface. Russian Journal of Organic Chemistry 37, 1013–1016 (2001). https://doi.org/10.1023/A:1012486718889
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DOI: https://doi.org/10.1023/A:1012486718889