화학공학소재연구정보센터
Journal of Industrial and Engineering Chemistry, Vol.87, 213-221, July, 2020
High electroluminescence efficiency and long device lifetime of a fluorescent green-light emitter using aggregation-induced emission
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Three bipolar materials, 4-(4,6-diphenyl-1,3,5-triazin-2-yl)-N,N-diphenylaniline (DPAT-Ph), 4-(4, 6-diphenyl-1,3,5-triazin-2-yl)-N,N-diphenylnaphthalen-1-amine (DPAT-Na), and 10-(4,6-diphenyl- 1,3,5-triazin-2-yl)-N,N-diphenylanthracen-9-amine (DPAT-An), were designed and synthesized. To achieve a bipolar character, diphenylamine (DPA) moiety and 2,4-diphenyl-1,3,5-triazine (DPT) moiety were introduced as electron donating and electron accepting groups, respectively. The three compounds exhibited UV maximum wavelengths (UVmax) at 395.454 nm and photoluminescence maximum wavelengths (PLmax) at 472.546 nm. 10-(4,6-Diphenyl-1,3,5-triazin-2-yl)-N,N-diphenylanthracen-9- amine (DPAT-An) shows AIE phenomenon even though DPAT-An does not have tetraphenylethylene (TPE) moiety which is representative AIE structure. DPAT-An exhibits over EQE value of 5% and long device lifetime of 1310 h without sublimation process.
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