Synthesis and characterization of blue-to-green electrophosphorescence emitter based on pyrazole iridium complexes

X Huixia, Y Yan, Q Litao, H Yuying, W Hua, C Liuqing…

Index: Huixia, Xu; Yan, Yue; Litao, Qu; Yuying, Hao; Hua, Wang; Liuqing, Chen; Bingshe, Xu Dyes and Pigments, 2013 , vol. 99, # 1 p. 67 - 73

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Citation Number: 11

Abstract

To overcome the roll-off efficiency of electrophosphorescent organic light-emitting devices, Ir (III) complexes of (ppz) 2Ir (NˆN) were synthesized and named for (ppz) 2Ir (tfmpptz),(ppz) 2Ir (fpptz),(ppz) 2Ir (tfmptz) and (ppz) 2Ir (pybi)(ppz: 1-phenylpyrazolato; NˆN: N, N′- heteroaromatic). Their molecular structures, photophysical properties and cyclic voltammetric data were reported. The crystals of (ppz) 2Ir (tfmpptz),(ppz) 2Ir (fpptz) are ...