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Alkyl side chain driven tunable red-yellow-green emission: Investigation on the new pi-conjugated polymers comprising of 2,7-carbazole unit and 2,1,3-benzo-thiadiazole units with different side chains
其他题名Alkyl side chain driven tunable red-yellow-green emission: Investigation on the new pi-conjugated polymers comprising of 2,7-carbazole unit and 2,1,3-benzo-thiadiazole units with different side chains
Du JP(杜俊平); Xu EJ(许二建); Zhong HL(钟洪亮); Yu F(余锋); Liu C(刘畅); Wu HR(吴欢荣); Ceng DL(曾丹黎); Ren SJ(任世杰); Sun J(孙晶); Liu YC(刘迎春); Cao AM(曹阿民); Fang Q(房强)
2008
发表期刊J. Polym. Sci. Pol. Chem.
ISSN0887-624X
卷号46期号:4页码:1376-1387
摘要Four new soluble polymers containing a 2,7-carbazole unit and a 2,1,3-benzothiadiazole unit in the main chain were synthesized by Suzuki polycondensation. Variation of the substituent groups (R) at 5-position of 2,1,3-benzothiadiazole unit resulted in different color emission of the copolymers. Thus, when R was -CH3 (or -H), the polymer showed yellow-green (or red) emission; whereas the polymers showed the emission from green to yellow-green, when R was -CH2(CH2)(5)CH3 or -CH2OCH(CH3)(2). To investigate the nature of the color change, a Gaussian 03 program was used for estimation of the dihedral angles between a 5-R-2,1,3-benzothiadiazole unit and a 2,7-carbazole unit. The results showed that the different substituents at 5-position of 2,1,3-benzothiadiazole brought about different the dihedral angles, which gave the different conjugation levels to the polymers. Hence, the tunablity of emission color may be attributed to the different conjugation levels between 2,7-carbazole units and 5-R-2,1,3-benzothiadiazole units induced by simply changing substituent groups at 5-position of benzothiadiazole unit. Electrochemically, the copolymers exhibited a higher oxidation potential as well as the reversible reduction behavior bearing from 2,1,3-benzothiadiazole unit. To investigate the electroluminescent properties of the polymers, the nonoptimized devices were fabricated and the results showed that the electroluminescent emission wavelength was basically similar to that of the photoluminescent. All polymers showed good thermal stability with 5 wt % loss temperature of more than 296 degrees C. (C) 2008 Wiley Periodicals, Inc.
学科领域高分子化学
部门归属上海有机所; 上海广电电子股份有限公司平板显示研究中心
URL查看原文
收录类别SCI
语种英语
WOS记录号WOS:000253221300021
引用统计
被引频次:16[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.sioc.ac.cn/handle/331003/22936
专题高分子材料研究室
通讯作者Fang Q(房强)
推荐引用方式
GB/T 7714
Du JP,Xu EJ,Zhong HL,et al. Alkyl side chain driven tunable red-yellow-green emission: Investigation on the new pi-conjugated polymers comprising of 2,7-carbazole unit and 2,1,3-benzo-thiadiazole units with different side chains[J]. J. Polym. Sci. Pol. Chem.,2008,46(4):1376-1387.
APA 杜俊平.,许二建.,钟洪亮.,余锋.,刘畅.,...&房强.(2008).Alkyl side chain driven tunable red-yellow-green emission: Investigation on the new pi-conjugated polymers comprising of 2,7-carbazole unit and 2,1,3-benzo-thiadiazole units with different side chains.J. Polym. Sci. Pol. Chem.,46(4),1376-1387.
MLA 杜俊平,et al."Alkyl side chain driven tunable red-yellow-green emission: Investigation on the new pi-conjugated polymers comprising of 2,7-carbazole unit and 2,1,3-benzo-thiadiazole units with different side chains".J. Polym. Sci. Pol. Chem. 46.4(2008):1376-1387.
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