Constructing new n-type, ambipolar, and p-type aggregation-induced blue luminogens by gradually tuning the proportion of tetrahphenylethene and diphenylphophine oxide

Guangyuan Mu, Wenzhi Zhang, Peng Xu, Hongfeng Wang, Yixing Wang, Lei Wang*, Shaoqing Zhuang, Xunjin ZHU

*Corresponding author for this work

Research output: Contribution to journalJournal articlepeer-review

29 Citations (Scopus)

Abstract

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 × 10 -4 cm2 V-1 s-1) 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 (Lmax) of 8656 cd m-2, a maximum current efficiency (ηC,max) of 9.32 cd A-1, and a maximum power efficiency (ηP,max) of 10.23 lm W-1.

Original languageEnglish
Pages (from-to)8610-8616
Number of pages7
JournalJournal of Physical Chemistry C
Volume118
Issue number16
DOIs
Publication statusPublished - 24 Apr 2014

Scopus Subject Areas

  • Electronic, Optical and Magnetic Materials
  • Energy(all)
  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films

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