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Ionic Polyacetylene with Aromatic Functional Groups: Synthesis and Properties
Author(s) -
Kwak Giseop,
Jin SungHo,
Park JongWook,
Gal YeongSoon
Publication year - 2008
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/macp.200800284
Subject(s) - chemistry , bromide , polymer chemistry , polymerization , conjugated system , polymer , polyacetylene , benzyl bromide , pyridine , ionic bonding , photochemistry , catalysis , organic chemistry , ion
An ionic conjugated polymer with aromatic functional groups, poly{2‐ethynyl‐ N‐ [4‐(methylthio)benzylpyridinium bromide]}, was synthesized via the activated polymerization of 2‐ethynylpyridine by using 4‐(methylthio)benzyl bromide without any additional initiator or catalyst. The polymerization proceeded well in polar solvents such as DMF, DMSO, NMP and pyridine, and produced high yields. NMR, IR, and UV‐vis spectroscopy confirmed a conjugated polymer backbone system containing N‐ (4‐(methylthio)benzylpyridinium bromide as substituents. The photoluminescence maximum peak of the polymer was located at 508 nm, which corresponds to the photon energy level of 2.44 eV. The cyclovoltammograms of the polymer exhibited an electrochemically stable window in the −1.32 to 1.92 V region.