Blue electroluminescence of a novel Zn^(2+)–β-diketone complex with a carbazole moiety

作     者：Jian Liu Jing-Sheng Miao 

作者机构：School of New Energy Science and EngineeringXinyu University Institute of Polymer Optoelectronic Materials and DevicesState Key Laboratory of Luminescent Materials and DevicesSouth China University of Technology 

出 版 物：《Chinese Chemical Letters》 (中国化学快报（英文版）)

年 卷 期：2014年第25卷第1期

页      面：69-72页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 070304[理学-物理化学(含∶化学物理)] 08[工学] 0817[工学-化学工程与技术] 0703[理学-化学] 

基　　金：supported by the Research Foundation of Education Department of Jiangxi,China(No.GJJ12653) the Science&Technology Program of Universities of Jiangxi,China(No.KJLD12100) 

主　　题：Zinc complex Blue electroluminescence β Diketone Carbazolemoiety 

摘      要：In this letter, a novel zinc complex of Zn（ECTFBD）2 was synthesized by an environment-friendly grinding technique in high yield. Its structure was confirmed by 1H NMR, MS and EA. HECTFBD is 1-（9-ethyl-9H- carbazol-3-yl）-4,4,4-trifluorobutane-l,3-dione. Zn（ECTFBD）2-based light-emitting devices were fabricated. The architecture of the devices was ITO/PEDOT （40 nm）/100 wt% PVK： 40 wt% OXD-7： x wt% Zn（ECTFBD）2 （85 nm）/CsF （1.5 nm）/Al （100 rim）, where x = 1, 5, and 10 （relative to the mass of PVK and OXD-7）. The three devices displayed blue emissions with peaks at 450, 458, and 460 nm, respectively. A maximum luminous efficiency of 0.86 cd/A and a luminance of 228 cd/m2 were achieved by the 1 wt% doped device. So, we demonstrated further that Zn2＋-β-diketone complexes can be effectively severed as a class of new electroluminescent materials. In addition, the thermal stability of Zn（ECTFBD）2 was tested and the UV-vis and photoluminescent behaviors of Zn（ECTFBD）2 in CH2CI2 were investigated.