K. Lim, Jongwook Park, Tae-Kwan Son
Mar 4, 2018
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Journal
Molecular Crystals and Liquid Crystals
Abstract
ABSTRACT The catalyst-free polymerization of 2-ethynylpyridine using 2-(bromomethyl)benzyl alcohol proceeded well to give a high yield of polymer (91%). The structural analysis of resulting polymer indicated that the resulting conjugated polymer have the (N-2-hydroxymethylbenzyl)pyridinium bromide as substituents. The absorption spectrum exhibited the maximum peak of 457 nm and the band gap was 2.15 eV. Overall redox current shape and values were very stable in the range of −1.5 V to 1.5 V under up to 50 cycles. Oxidation was started at 0.388 V. HOMO and LUMO levels were 5.14 and 2.99 eV, respectively.