A new route to hyperbranched macromolecules: syntheses of photosensitive poly (aroylarylene) s via 1, 3, 5-regioselective polycyclotrimerization of bis ( …

H Dong, R Zheng, JWY Lam, M Häussler, A Qin…

Index: Dong, Hongchen; Zheng, Ronghua; Lam, Jacky W. Y.; Haeussler, Matthias; Qin, Anjun; Tang, Ben Zhong Macromolecules, 2005 , vol. 38, # 15 p. 6382 - 6391

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Citation Number: 74

Abstract

A new synthetic route to hyperbranched polymers is developed. Polycyclotrimerizations of functional diynes 1-3 initiated by a simple base of piperidine lead to the formation of hyperbranched poly (aroylarylene) s P 1-P 3 with perfect 1, 3, 5-regioregularity and high degree of branching (up to 100%) in high yields (up to 99%). The polymers show high photosensitivities and can be readily photo-cross-linked to give photoresist patterns with ...