文献类型：期刊文献

英文题名：Photophysical and electroluminescent properties of a Series of Monochromatic red-emitting europium-complexed nonconjugated copolymers based on diphenylphosphine oxide modified polyvinylcarbazole

作者：Xu, Hui[1,2];Zhu, Rui[3];Zhao, Ping[4,5];Xie, Ling-Hai[3];Huang, Wei[3]

机构：[1]Heilongjiang Univ, Minist Educ, Key Lab Funct Inorgan Mat Chem, Harbin 150080, Peoples R China;[2]Heilongjiang Univ, Sch Chem & Mat, Harbin 150080, Peoples R China;[3]NJUPT, Jiangsu Key Lab Organ Elect & Flat Panel Displays, IAM, Nanjing 210003, Peoples R China;[4]E China Univ Sci & Technol, Key Lab Adv Mat, Shanghai 200237, Peoples R China;[5]E China Univ Sci & Technol, Inst Fine Chem, Shanghai 200237, Peoples R China

年份：2011

卷号：52

期号：3

起止页码：804

外文期刊名：POLYMER

收录：;EI(收录号：20110513641273);WOS:【SCI-EXPANDED(收录号:WOS:000287013600028)】；

基金：This project was financially supported by NSFC (50903028 and 20972043), Science and Technology Bureau of Heilongjiang Province (QC08C10), Education Bureau of Heilongjiang Province (10td03), Innovation Fund of KLFIMC, the Supporting Program of Innovation teams of HLJU (hdtd2010-08) and Heilongjiang University Funds for Distinguished Young Teachers.

语种：英文

外文关键词：Eu-chelated copolymer; Intra-chain energy transfer; Electroluminescence

摘要：Two novel copolymers P1 and P2 were prepared by using the polymerizable aryl phosphine oxide based Eu(TTA)(3)VBCzENDO (EuM) (VBCzDPO = 3,6-bis(diphenyl-phosphoryl)-9-(4- vinylbenzyl)-9H-carbazole) and vinylcarbazole as the monomers with the compositions of 1:99 and 1:33, respectively. It is showed that the stronger coordinate ability of bidentate APO ligands facilitates the stability of the complex monomer during polymerization, and their beetling coordinate sites and adjustable structure efficiently reduce the steric effect of bulky EuM. Both of photoluminescent (PL) spectra in solution and solid of the copolymers exhibited improved emission from Eu(3+) ion. The high PL quantum yield (PL QY) in solid of 60% is realized. Further investigation indicates that for the intra-chain energy transfer VBCzDPO serves as the intermediate and bridge between PVK and Eu(TTA)(3), which ensures the high efficiency of whole intra-chain energy transfer. The pure-red emission from the devices of P1 and P2 was demonstrated. (C) 2010 Elsevier Ltd. All rights reserved.