AIE-active 9, 10-bis(alkylarylvinyl)anthracences with pendent diethoxylphosphorylmethyl groups as solution-processable efficient EL luminophores. Issue 35 (29th August 2017)

• Record Type: Journal Article
• Authors: Sun, Qikun; Qiu, Xu; Lu, Yuansheng; Xu, Xin; Wang, Honghong; Xue, Shanfeng; Yang, Wenjun
• Is Part Of: Journal of materials chemistry. Volume 5:Issue 35(2017)
• Page Start: 9157
• Page End: 9164
• Publication Date: 2017-08-29
• Subjects: Materials -- Periodicals; Chemistry, Analytic -- Periodicals; Optical materials -- Research -- Periodicals; Electronics -- Materials -- Research -- Periodicals; 543.0284
• DOI: 10.1039/c7tc03027d
• Languages: English
• ISSNs: 2050-7526

Abstract

Abstract : An AIE luminophore with pendent diethoxylphosphorylmethyl groups was used as solution-processed EL emitter and emitted 596 nm of orange light with peak current and external quantum efficiencies up to 9.4 cd A −1 and 3.9%, respectively. Abstract : 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.