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Introduction of Diphenylmaleimide Moieties into the Main Chain of Fully π‐Conjugated Poly(arylene ethynylene)s as ‘Kink’ Structures
Author(s) -
Yang Nam Choul,
Suh Dong Hack
Publication year - 2001
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/1521-3927(20010301)22:5<335::aid-marc335>3.0.co;2-g
Subject(s) - arylene , sonogashira coupling , conjugated system , polymer chemistry , dispersity , solubility , polymer , alkyl , side chain , materials science , chemistry , absorption (acoustics) , photochemistry , organic chemistry , palladium , catalysis , aryl , composite material
Novel fully π‐conjugated poly(arylene ethynylene)s 1 and 2 having diphenylmaleimides in the backbone were prepared utilizing a Pd(0)‐Cu(I) catalyzed coupling reaction (Sonogashira method) of N ‐alkyl substituted 1,2‐di(4‐bromophenyl) maleimides ( 5 and 6 ) with 1,4‐diethynylbenzene. Whereas polymer 1 with an N‐ hexyl side chain showed low solubility, 2 having an N‐ dodecyl group was completely soluble in common organic solvents. Determined by GPC, M̄ w of 2 was 45 800 Da with a polydispersity index of 2.5. Polymer 2 showed UV‐visible absorption maxima at 330 nm and 413 nm and greenish yellow fluorescence with a maximum of 530 nm.