Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/95039
Title: Synthesis and characterization of poly{1,2-bis(2-seleninyl)ethene}, a novel electrically conductive polymer with diminished band gap
Authors: Ng, S.C. 
Chan, H.S.O. 
Ong, T.T. 
Kumura, K.
Mazaki, Y.
Kobayashi, K.
Issue Date: 24-Feb-1998
Source: Ng, S.C.,Chan, H.S.O.,Ong, T.T.,Kumura, K.,Mazaki, Y.,Kobayashi, K. (1998-02-24). Synthesis and characterization of poly{1,2-bis(2-seleninyl)ethene}, a novel electrically conductive polymer with diminished band gap. Macromolecules 31 (4) : 1221-1228. ScholarBank@NUS Repository.
Abstract: A novel electrically conducting polymer containing selenophene and ethenyl spacer, poly-{1,2-bis(2-seleninyl)ethene}(PDSE), has been generated by chemical and electrochemical polymerization. This polymer exhibits a significantly lower band gap (1.61 eV) than polyselenophene and possesses partial solubility in common organic solvents. The electrochemical and optical properties have been thoroughly investigated by cyclic voltammetry and UV-vis spectroscopy. This polymer can be reversibly reduced and oxidized (both n- and p-doped) between -2.0 V and +0.8 V (vs SCE). Chemically doped polymers using chemical reagents such as iodine and ferric chloride afforded materials with a maximum conductivity of 0.27 S cm-1. Scanning electron micrographs of (C1O4 -) doped polymers deposited on indium tin oxide coated glass electrode depict a globular morphology. X-ray photoelectron spectroscopic studies of PDSE were conducted using undoped polyselenophene synthesized from a nickel-catalyzed Grignard cross-coupling reaction as a calibration standard for the Se 3d environment.
Source Title: Macromolecules
URI: http://scholarbank.nus.edu.sg/handle/10635/95039
ISSN: 00249297
Appears in Collections:Staff Publications

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