Synthesis and Characterization of Soluble Conjugated Poly(p-phenylenevinylene) Derivatives Constituted of Alternating Pyrazole and 1,3,4-Oxadiazole Moieties

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题名:	Synthesis and Characterization of Soluble Conjugated Poly(p-phenylenevinylene) Derivatives Constituted of Alternating Pyrazole and 1,3,4-Oxadiazole Moieties
作者:	(Chang, E.-M);(Huang, S.-L.);(Lee, C.-T.);林煇章(Hui-Chang Lin);(Chen, C.-Y.);黃俞潁(Huang, Y.-Y.);翁豐富(Wong, Fung Fuh)*
贡献者:	藥學院藥物化學研究所
日期:	2009-07
上传时间:	2009-08-26 16:26:36 (UTC+8)
摘要:	New soluble poly(p-phenylenevinylene) derivatives with 1,3,4-oxadiazole and pyrazole rings along the main chain were synthesized by Heck coupling. The new conjugated polymers are soluble in common organic solvents as a result of the fully conjugated backbone with dodecyloxy side groups. The polymers show relatively high glass-transition temperatures (up to 160°C) and good satisfactory thermal stability. Solutions of the polymers emit blue-greenish light with photoluminescence (PL) emission maxima around 490–500 nm. The PL spectrum of the polymer’s thin films, with a maximum at 515 nm, shows a red-shift (~20 nm), with respect to the solution spectrum. Cyclic voltammetry reveals that both conjugated polymers have reversible oxidation and irreversible reduction, making them n-type electroluminescent materials. The electron affinity of the new polymers was estimated as 2.73–2.74 eV. The weight-average molecular weights (M w) of the new soluble polymers were in the range of 4790–4950.
關聯:	AUSTRALIAN JOURNAL OF CHEMISTRY 62(10):1355~1362
显示于类别:	[藥物化學研究所] 期刊論文

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