| 一种含噁二唑基团MEHPV交替共聚物的合成及其荧光性能 |
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| 引用本文： | 王华林,孙岳明,祁争健,蒋伟,宋坤忠,李大雁.一种含噁二唑基团MEHPV交替共聚物的合成及其荧光性能[J].东南大学学报,2008,24(2). |
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| 作者姓名： | 王华林 孙岳明 祁争健 蒋伟 宋坤忠 李大雁 |
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| 作者单位： | 东南大学化学化工学院,南京211189 |
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| 基金项目： | 国家重点基础研究发展计划(973计划)，the High Technology Research and Development Program of Jiangsu Province |
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| 摘 要： | 通过钯催化的Heck耦合反应，合成了一种含噁二唑基团与MEHPV单元的交替共聚物（oxa-MEHPV），并利用UV-vis，FT-IR，^1H-NMR对其单体和聚合物的结构进行了表征，研究了目标聚合物的荧光性能、由于在MEH-PPV的主链骨架上引入噁二唑基团，oxa-MEHPV分子链的刚性得到增强，表现出更好的热稳定性能，在常规有机溶液如氯仿、二氯甲烷、甲苯等中也有更好的溶解性．同时，由于噁二唑具有很好的电子亲和能力，聚合物紫外吸收波长发生了较大的蓝移，较MEH-PPV拥有了更好的电子迁移率和更高的荧光量子效率，因而在聚合物电致发光（PLED）领域有潜在的应用前景.
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| 关 键 词： | MEH-PPV 噁二唑 电子注入 光致发光 聚合物电致发光 |
Synthesis and optical properties of an alternating copolymer composed of MEHPV and 1,3, 4-oxadiazole |
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| Wang Hualin,Sun Yueming,Qi Zhengjian,Jiang Wei,Song Kunzhong,Li Dayan.Synthesis and optical properties of an alternating copolymer composed of MEHPV and 1,3, 4-oxadiazole[J].Journal of Southeast University(English Edition),2008,24(2). |
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| Authors: | Wang Hualin Sun Yueming Qi Zhengjian Jiang Wei Song Kunzhong Li Dayan |
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| Abstract: | A poly(p-phenylenevinylene)(PPV)alternating copolymer,poly(2,5-diphenylene-1,3,4-oxadiazole)-4-4'-vinylene-alt-2-methoxy-5-(2-ethylhexyloxy)-1,4-phenylen-evinylene](oxa-MEHPV),is synthesized by Heck coupling reaction and characterized with UV-vis,Fourier transform infrared(FT-IR),1H-NMR and photoluminescence(PL)spectroscopy.oxa-MEHPV possesses an outstanding thermal stability and shows excellent solubility in common organic solvents such as dichloromethane,chloroform,toluene,and tetrahydrofuran(THF).The introduction of the electron-deficient 1,3,4-oxadiazole units into the MEH-PPV backbone also increases the electron affinities of the conjugated segment,which leads to the blue-shift of the maximum absorption wavelength and makes the polymer have a high optical band-gap energy,good electron-transporting stability and high PL quantum yield. |
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| Keywords: | MEH-PPV MEH-PPV 1 3 4-oxadiazoles units electroninjection photoluminescence polymer light-emitting diode |
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