Constructing New n-Type, Ambipolar, and p-Type Aggregation-Induced Blue Luminogens by Gradually Tuning the Proportion of Tetrahphenylethene and Diphenylphophine Oxide

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• 作者：Guangyuan Mu ; Wenzhi Zhang ; Peng Xu ; Hongfeng Wang ; Yixing Wang ; Lei Wang ; Shaoqing Zhuang ; Xunjin Zhu
• 刊名：Journal of Physical Chemistry C
• 出版年：2014
• 出版时间：April 24, 2014
• 年：2014
• 卷：118
• 期：16
• 页码：8610-8616
• 全文大小：515K
• 年卷期：v.118,no.16(April 24, 2014)
• ISSN：1932-7455

文摘

By gradually adjusting the proportion of tetraphenylethene (TPE) and phosphine oxide (PO), the series of n-type, ambipolar, and p-type aggregation-induced emission (AIE) luminogens (E,Z)-((1,2-diphenylethene-1,2-diyl)bis(4,1-phenylene))bis(diphenylphosphine oxide) (TPEDPO), diphenyl(4-(1,2,2-triphenylvinyl)phenyl)phosphine oxide (TPEPO), phenylbis(4-(1,2,2-triphenylvinyl)phenyl)phosphine oxide (DTPEPO), and tris(4-(1,2,2-triphenylvinyl)phenyl)phosphine oxide (TTPEPO) were developed for the first time. Their optical and electronic properties and AIE characteristics were investigated carefully. Time-resolved spectra indicate that the transient fluorescence decay lifetimes of aggregation-induced blue luminogens change regularly with the aggregation degree in THF/water solution. Particularly, identical electron and hole mobilities (2.3 脳 10 ^鈥? cm² V^鈥? s^鈥?) can be realized when the TPE/PO ratio is 1:1. In electroluminesent (EL) devices, the sky-blue-doped device based on TPEPO was found to exhibit a low turn-on voltage of 2.8 V, a maximum luminance (L_max) of 8656 cd m^鈥?, a maximum current efficiency (畏_C,max) of 9.32 cd A^鈥?, and a maximum power efficiency (畏_P,max) of 10.23 lm W^鈥?.