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 H-1 NMR, MS and EA. HECTFBD is 1-(9-ethyl-9H-carbazol-3-yl)-4,4,4-trifluorobutane-1,3-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 nm), 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/m(2) were achieved by the I wt% doped device. So, we demonstrated further that Zn2+-beta-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 CH2Cl2 were investigated. (C) 2013 Jian Liu. Published by Elsevier B.V. on behalf of Chinese Chemical Society. All rights reserved.