Synthesis and optical properties of a novel soluble polycarbazolyldiacetylene

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.