Red to orange thermally activated delayed fluorescence polymers based on 2-(4-(diphenylamino)-phenyl)-9<i>H</i>-thioxanthen-9-one-10,10-dioxide for efficient solution-processed OLEDs
作者:Praetip Khammultri、Pongsakorn Chasing、Chirawat Chitpakdee、Supawadee Namuangruk、Taweesak Sudyoadsuk、Vinich Promarak
DOI:10.1039/d1ra04599g
日期:——
fluorescence (TADF)-based organic light-emitting diodes (OLEDs) are multi-layer devices fabricated by thermal vacuum evaporation techniques, which are unfavorable for real applications. However, there are only a few reported examples of efficient solution-processed TADF OLEDs, in particular TADF polymer OLEDs. Herein, a series of solution-processable TADF conjugated polymers (PCTXO/PCTXO-Fx (x = 25, 50 and
大多数基于热激活延迟荧光(TADF)的高效有机发光二极管(OLED)是通过热真空蒸发技术制造的多层器件,这不利于实际应用。然而,有效溶液加工 TADF OLED(特别是 TADF 聚合物 OLED)的报道实例很少。本文通过2-(4-(二苯氨基)-苯基)-9 H-的共聚设计并合成了一系列可溶液加工的TADF共轭聚合物( PCTXO / PCTXO-F x ( x = 25、50和75))。噻吨-9-一-10,10-二氧化物 (TXO-TPA) 作为红色/橙色发射 TADF 单元,9,9′-((芴-9,9-二基)-双(辛烷-8,1-二基) ))-双(3,6-二叔丁基咔唑)作为主体/空穴传输单元和2,7- N- (十七烷-9-基)咔唑作为共轭连接体和增溶基团。它们具有与供体 TPA-咔唑/芴部分和悬垂受体 9 H-噻吨-9-酮-10,10-二氧化物 (TXO) 形成扭曲的供体-受体结构的共轭主链。这些纯薄膜中的聚合物显示出具有