Synthesis and characterization of photolumine scent conjugated polymer containing N-(α-naphthyl)-carbazole unit

被引:4
作者
Feng, LH
Zhang, CH
Chen, ZB [1 ]
Qin, AJ
Yuan, MS
Bai, FL
机构
[1] Shanxi Univ, Sch Chem & Chem Engn, Taiyuan 030006, Peoples R China
[2] Chinese Acad Sci, Inst Chem, Beijing 100080, Peoples R China
关键词
conjugated polymers; luminescence; monomers; N-(alpha-naphthyl)-carbazole; Witting-Hornor reaction;
D O I
10.1002/app.23050
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
A novel luminescent conjugated polymer, poly[{9-(alpha-naphthyl)-3,6-divinylenecarbazolylene}-alt-co-(1,4-phenylene)] (PNVCP), bearing alternated 9-(ce-naphthyl)-carbazole and benzene units, was synthesized via a Wittig-Horner reaction. The solubility, thermal, and optical properties were investigated. It was soluble in common organic solvents, such as tetrahydrofuran and 1,2-dichlororoethane. Thermogravimetric analysis and differential scannin-calorimetry showed that the conjugated polymer exhibited good thermal stability up to 496 degrees C with a glasstransition temperature higher than 110 degrees C. The photoluminescence properties were studied. The polymer emits blue light and the quantum yield is 93% in solution. The emission spectra exhibited an obvious solvent effect. With the increase of the polarity of the solvents, the fluorescence spectra changed obviously and appeared to be redshifted at room temperature. The redshift was more obvious in aromatic solvents than in aliphatic solvents. When N,N-dimethvlaniline was gradually added into the solution of the conjugated polymer, the emission intensity of the fluorescence decreased. In comparison, the emission intensity of the polymer showed invariability when 1,4-dicyanobenzene was added into the polymer solution. Moreover, the fluorescence of the polymer could be effectively quenched by fullerene. Overall, the synthesized polymer is a potential candidate material for fabrication of polymeric light-emitting devices. (c) 2006 Wiley Periodicals, Inc.
引用
收藏
页码:923 / 927
页数:5
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