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[1] Wang Hualin, Sun Yueming, Qi Zhengjian, Jiang Wei, et al. Synthesis and optical properties of an alternating copolymercomposed of MEHPV and 1, 3, 4-oxadiazole [J]. Journal of Southeast University (English Edition), 2008, 24 (2): 238-242. [doi:10.3969/j.issn.1003-7985.2008.02.023]
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Synthesis and optical properties of an alternating copolymercomposed of MEHPV and 1, 3, 4-oxadiazole()
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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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:
24
Issue:
2008 2
Page:
238-242
Research Field:
Mathematics, Physics, Mechanics
Publishing date:
2008-06-03

Info

Title:
Synthesis and optical properties of an alternating copolymercomposed of MEHPV and 1, 3, 4-oxadiazole
一种含噁二唑基团MEHPV交替共聚物的合成及其荧光性能
Author(s):
Wang Hualin Sun Yueming Qi Zhengjian Jiang Wei Song Kunzhong Li Dayan
School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, China
王华林 孙岳明 祁争健 蒋伟 宋坤忠 李大雁
东南大学化学化工学院, 南京 211189
Keywords:
MEH-PPV 1 3 4-oxadiazoles units electron injection photoluminescence polymer light-emitting diode
MEH-PPV 噁二唑 电子注入 光致发光 聚合物电致发光
PACS:
O361;TN383.1
DOI:
10.3969/j.issn.1003-7985.2008.02.023
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.
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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Memo

Memo:
Biographies: Wang Hualin(1975—), male, graduate;Sun Yueming(corresponding author), male, doctor, professor, sun@seu.edu.cn.
Foundation items: The National Basic Research Program of China(973 Program)(No.2007CB936300), the High Technology Research and Development Program of Jiangsu Province(No.BG2006033).
Citation: Wang Hualin, Sun Yueming, Qi Zhengjian, et al.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):238-242.
Last Update: 2008-06-20