AIE-active 9,10-bis(alkylarylvinyl)anthracences with pendent diethoxylphosphorylmethyl groups as solution-processable efficient EL luminophores

作者：Sun, Qikun; Qiu, Xu; Lu, Yuansheng; Xu, Xin; Wang, Honghong; Xue, Shanfeng^*; Yang, Wenjun

来源：Journal of Materials Chemistry C, 2017, 5(35): 9157-9164.

DOI：10.1039/c7tc03027d

• LIGHT-EMITTING-DIODES
• AGGREGATION-INDUCED EMISSION
• SOLID-STATE LASERS
• CONJUGATED POLYMERS
• SMALL-MOLECULE
• PIEZOCHROMIC LUMINESCENCE
• HIGHLY EFFICIENT
• BLUE
• ELECTROLUMINESCENCE
• EMITTERS

Solution-processable organic small molecules exhibiting the aggregation-induced emission (AIE) feature as electroluminescent (EL) emitters are very desirable because they can combine the low-cost solution processability of polymers, the reproducible well-defined structures of small molecules, and the strong solid-state fluorescence of AIE molecules; however, they are rarely reported. Herein, we first investigated the thermal stability, optical properties, stimuli-responsive behaviors, and application in solution-processed EL device of 2,6-bis(diethoxylphosphorylmethyl)-9,10-bis(N-alkylcarbazol-3-yl-vinyl)-anthracence (PAC8). PAC8 exhibited AIE behaviour, reversible mechanochromic luminescence, good thermal stability and strong crystalline green emission. More interestingly, PAC8 solution could be spin-coated into a good quality film, and the solution-processed non-doped EL device emitted 596 nm of orange-red light with peak luminous efficiencies (9.4 cd A(-1) and 3.9 lm W-1) and external quantum efficiency up to 3.9%. This impressive EL performance signified that the pendent diethoxylphosphorylmethyl groups could be used as a promising avenue for improving the film-formation and EL performance.

• 出版日期2017-9-21
• 单位青岛科技大学