Abstract
AbstractMesoionic poly(1,1′‐(1,3‐phenylene)‐3,3′‐(1,4‐phenylene)‐bis(5‐decyl‐2‐decylthio‐4,6‐dioxo‐1,3‐diazine)) (6) was prepared by cyclisation of the isothiourea component of poly(1,1′‐(1,3‐phenylene)‐3,3′‐(1,4‐phenylene)‐bis(2‐decylisothiourea)) (4) with decylmalonic acid (5) by use of dicyclohexylcarbodiimide (DCC). Polymer 4 was obtained by polymer analogous alkylation of poly(1,1′‐(1,3‐phenylene)‐3,3′‐(1,4‐phenylene)‐bisthiourea) (3). For comparison of spectroscopic data, 5‐butyl‐2‐propylthio‐4,6‐dioxo‐1,3‐diphenyl‐1,3‐diazine (9) was synthesized as low molecular weight model compound.
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