The detection of carbazole units and pol
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A. Ledwith; A.M. North; K.E. Whitelock
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Article
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1968
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Elsevier Science
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English
โ 264 KB
Abstraet--Carbazole units in copolymers can be cross-linked by reaction with a Lewis acid catalyst in methylene chloride. The reaction initially causes gel formation, followed by the development (with BF3. Et20) of a characteristic blue colour. The blue product has been shown to be a cationic dye of