Preparation and Optoelectronic Properties of Electropolymerized Polymeric Films from Di(carbazol-9-yl)-substituted Triphenylamine and N-Phenylcarbazole Derivatives
碩士 === 國立臺北科技大學 === 化學工程研究所 === 101 === Two carbazole end-capped monomers containing triphenylamine or N-phenylcarbazole as an interior core, namely 4,4’-di(carbazol-9-yl)- 4”-methoxytriphenylamine (TPA-2Cz) and 3,6-di(carbazol-9-yl)-N-(4-methoxy- phenyl)carbazole (PhCz-2Cz), were prepared by a wel...
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| Format: | Others |
| Language: | en_US |
| Published: |
2013
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| Online Access: | http://ndltd.ncl.edu.tw/handle/tu49b9 |
| Summary: | 碩士 === 國立臺北科技大學 === 化學工程研究所 === 101 === Two carbazole end-capped monomers containing triphenylamine or N-phenylcarbazole as an interior core, namely 4,4’-di(carbazol-9-yl)- 4”-methoxytriphenylamine (TPA-2Cz) and 3,6-di(carbazol-9-yl)-N-(4-methoxy- phenyl)carbazole (PhCz-2Cz), were prepared by a well-known chemistry from readily available reagents. The electrochemistry and electropolymerization of these two monomers were investigated and compared with those of structurally similar analogues with tert-butyl groups attaching on the active sites of the end-capped carbazole units. The polymeric films were built onto ITO/glass surface by repetitive cyclic voltammetry (CV) scanning of the monomer solutions containing an electrolyte. The electropolymerized films exhibited reversible electrochemical oxidation processes and strong color changes upon electro-oxidation, which can be switched by potential modulation. The remarkable electrochromic behavior of the film was clearly interpreted on the basis of spectroelectrochemical studies, and the electrochromic stability was evaluated by the electrochromic switching studies. In addition, the polymers of TPA-2Cz and PhCz-2Cz were also prepared by oxidative coupling polymerization using FeCl3 as an oxidant. Their solutions and solid films emitted blue fluorescence upon exposure to UV light.
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