应用化学2011，Vol.28Issue(11)：1229-1238,10.DOI:10.3724/SP.J.1095.2011.00026
聚芴主链含D-A型萘并噻二唑和苯并硒二唑衍生物的红光高分子发光材料
Red Electroluminescent Polyfiuorenes Containing D-A Type Naphthothiadiazole and Benzoselenadiazole Derivatives in the Main Chain
摘要
Abstract
Two novel D-A type red dopants containing naphthothiadiazole (NT) or benzoselenadiazole ( BS) electron withdrawing unit were synthesized. Through covalently attaching red dopants to polyfluorene ( PFO) backbones and tuning the doping concentration, we obtained a series of red polymers. All these red polymers exhibit similar absorption spectra as PFO. Their photoluminescent(PL) spectra show not only blue emission from the PFO backbone but also red emission from the dopant. The relative intensity of the red emission increases successively with doping concentration. Unlike the PL spectra, the electroluminescent (EL) spectra of all the polymers predominantly exhibit red emission, which is attributed to the red dopants, with a weak blue emission from PFO backbone. It realizes completely energy transfer from PFO host to red dopants at 1 % molar fraction doping level. The single-layer devices with the configuration of ITO/PEDOT: PSS/polymer/Ca/ A1(PEDOT; poly(3,4-ethylenedioxythiophene) ; PSS:poly(styrenesulfonate) ) show saturated red emission at 632 nm with a luminous efficiency of 1. 61 cd/A and CIE of (0. 63, 0. 35) for PFR-10NT, and pure red emission at 620 nm with a luminous efficiency of 1. 10 cd/A and CIE of (0. 63, 0. 36) for PFR-10BS, respectively.关键词
电致发光/红光高分子/"掺杂剂/主体"/聚芴/萘并噻二唑/苯并硒二唑Key words
electroluminescence/ red polymer/ "dopant/host"/ polyfluorene/ naphthothiadiazole/ benzoselenadiazole分类
化学化工引用本文复制引用
陈磊,程延祥,谢志元,王利祥..聚芴主链含D-A型萘并噻二唑和苯并硒二唑衍生物的红光高分子发光材料[J].应用化学,2011,28(11):1229-1238,10.基金项目
国家自然科学基金资助项目(50803062,60977026) （50803062,60977026）
