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A novel soluble polydiacetylene with 3,6‐dialkyl‐substituted carbazolyl side groups (polyDCHD‐S) has been prepared. Its electronic and vibrational properties have been studied in the crystalline state. The results are compared with those of polyDCHD taken as reference. PolyDCHD‐S shows a very high conjugation length like polyDCHD but an increased interchain separation. High non‐linear optical response is then expected; that — together with the processability of the polymer — suggests attractive applications in photonic devices based on thin film technology.
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Colombi et al. (1996) studied this question.
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