[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
)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
- Keywords:
- MEH-PPV; 1; 3; 4-oxadiazoles units; electron injection; photoluminescence; polymer light-emitting diode
- 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:
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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.