Synthesis and characterization of alternating copolymers derived from indeno[1,2‐b]fluorene for blue light‐emitting diodes
Synthesis and characterization of alternating copolymers derived from indeno[1,2‐b]fluorene for blue light‐emitting diodes
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DOI：
10.1002/app.35566
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发表时间：
2012-07
影响因子：
3
通讯作者：
Yangjun Xia;Chengmei Zhong;Bin Li;Hongbin Wu;Yong Cao;Duowang Fan
中科院分区：
文献类型：
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作者：
Yangjun Xia;Chengmei Zhong;Bin Li;Hongbin Wu;Yong Cao;Duowang Fan
以6,6′，12,12′-四辛基苯胺[1,2-b]芴（IF）和4,4′-二苯基醚（DPE）、N，N′-二（4-苯基）苯胺（TPA）、3,6-N-辛基咔唑（CZO）为原料，通过Suzuki偶联反应合成了3种蓝色发光交联共聚物，分别命名为PIF-DPE、PIF-TPA和PIF-CZO。通过1H-NMR、元素分析、凝胶渗透色谱、循环伏安法、热重分析和差示扫描量热法表征了共聚物的化学结构、光电性能和热性能。PIF-DPE、PIF-TPA和PIF-CZO共聚物在THF溶液和固态中的光致发光峰分别在432、419和411 nm左右，基于PIF-DPE、PIF-TPA和PIF-CZO共聚物的初步发光器件发出的蓝光最大发射峰分别在437、449和438 nm左右。通过在聚茚二酮[1,2-b]芴骨架中引入键结键，实现了共聚物共轭长度的控制，并获得了既满足颜色纯度又具有较高眼灵敏度的茚二酮[1,2-b]芴蓝色发光共轭聚合物。©2012 Wiley期刊公司应用高分子学报，2012
Three blue light-emitting alternating copolymers derived from 6,6′,12,12′-tetraoctylindeno[1,2-b]fluorene (IF) and 4,4′-diphenyl ether (DPE), N,N′-di(4-phenyl)aniline (TPA), or 3,6-N-octylcarbazole (CZO), named as PIF-DPE, PIF-TPA, and PIF-CZO, respectively, were synthesized by Suzuki coupling reaction. The chemical structure, optoelectronic and thermal properties of the copolymers were characterized by 1H-NMR, elemental analysis, gel permeation chromatography, cyclic voltammetry, thermogravimetric analysis, and differential scanning calorimetry. Photoluminescence peaks of the copolymers of PIF-DPE, PIF-TPA, and PIF-CZO in THF solution and solid state were around 432, 419, and 411 nm, and the preliminary light-emitting devices based on the copolymers of PIF-DPE, PIF-TPA, and PIF-CZO emit blue light with the maximal emission peaks at around 437, 449, and 438 nm, respectively. The control of conjugated length of the copolymers and the achievement of blue light-emitting conjugated polymers based on indeno[1,2-b]fluorene, which satisfy both color purity and relatively high eye sensitivity, were achieved by the introduction of kink linkages into the polyindeno[1,2-b]fluorenes backbone. © 2012 Wiley Periodicals, Inc. J Appl Polym Sci, 2012