期刊
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
卷 18, 期 1, 页码 55-60出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.jiec.2011.11.081
关键词
Polyacetylene; Conjugated polymer; Azobenzene; 2-Ethynylpyridine; Cyclovoltammogram; Photoluminescence
资金
- Korea Research Foundation (KRF)
- Korea Government [RT-2008-000-21056-0]
- Kyungil University
- Ministry of Knowledge Economy (MIKE), Korea [RTI04-01-04]
- National Research Foundation of Korea [2008-0061248, 2008-0062434] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
An ionic polyacetylene derivative with azoanisole moieties was prepared by the activated polymerization of 2-ethynylpyridine by using 4-[4-(9-bromononyloxy)phenylazo]anisole without any additional initiator or catalyst in high yield. The chemical structure of poly[2-ethynyl-N-(p-methoxyphenylazo-phenyl)oxynonylpyridinium bromide] (PEMPB) was characterized by instrumental methods such as NMR (H-1 and C-13), IR, UV-vis spectroscopies to have a conjugated polymer backbone system with the designed azobenzene moieties as substituents. This polymer was completely soluble in organic solvents and well processible. The electrochemical and electro-optical properties of PEMPB were studied. The cyclovoltammograms of this polymer exhibited the irreversible electrochemical behaviors between the oxidation and reduction peaks. The oxidation current density of PEMPB versus the scan rate is approximately linear relationship in the range of 30 mV/s-120 mV/s. The exponent of scan rate, x value of PEMPB, is found to be 0.6. The absorption spectrum starts around 700 nm and shows a characteristic absorption band at visible region of 464 nm due to the pi -> pi* interband transition of the polymer backbone, which is a peak of the conjugated polyene backbone. The photoluminescence spectrum showed that the PL peak is located at 539 nm corresponding to the photon energy of 2.30 eV. (C) 2011 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.
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