含有三苯胺-三唑双极性单元的橙红光阳离子型铱(Ⅲ)配合物的合成及在LEDs中的应用  

Synthesis of an Orange-red-emitting Cationic Iridium(Ⅲ)Complex Containing a Triphenylamine-triazole Bipolar Unit and Its Application in LEDs

作　　者：陈秋宏 叶艳春 任孟然 王凯民 唐怀军 汪正良 周强 CHEN Qiuhong;YE Yanchun;REN Mengran;WANG Kaimin;TANG Huaijun;WANG Zhengliang;ZHOU Qiang(Key Laboratory of Green-Chemistry Materials in University of Yunnan Province,School of Chemistry&Environment,Yunnan Minzu University,Kunming 650500,China)

机构地区：[1]云南省高校绿色化学材料重点实验室,云南民族大学化学与环境学院,昆明650500

出　　处：《高等学校化学学报》2020年第12期2717-2724,共8页Chemical Journal of Chinese Universities

基　　金：广东省高性能与功能高分子材料重点实验室开放基金(批准号:20190009);国家自然科学基金(批准号:21762049,21261027)资助.

摘　　要：以2-萘基吡啶(npy)为主配体,N,N-二苯基-4-[4-苯基-5-(吡啶-2-基)-4H-1,2,4-三唑-3-基]苯胺(DPPTA)为辅助配体,合成了含有三苯胺-三唑双极性结构单元的橙红光阳离子型有机铱(Ⅲ)配合物[(npy)2Ir(DPPTA)]PF6.该配合物的热分解温度高达345℃,从20℃升温到100℃时,相对发光强度衰减28.0%,发光颜色稳定.其所含的双极性结构单元使其能有效地吸收GaN芯片的蓝光(λem,max=455 nm),进而可被蓝光高效激发.以GaN蓝光芯片作为激发光源,[(npy)2Ir(DPPTA)]PF6为下转换发光材料,可以制得橙红光LEDs;进一步与黄光材料Y3Al5O12∶Ce3+(YAG:Ce3+)联用,可以制得高效的中性白光和暖白光LEDs.A novel orange-red-emitting cationic organic iridium(Ⅲ)complex,[(npy)2 Ir(DPPTA)]PF6,con⁃taining a triphenylamine-triazole bipolar unit was synthesized using 2-naphthyl pyridine(npy)as main ligand and N,N-diphenyl-4-[4-phenyl-5-(pyridin-2-yl)-4H-1,2,4-triazol-3-yl]aniline(DPPTA)as ancillary ligand.The thermal decomposition temperature of the complex was 345℃,from 20℃to 100℃,its relative photolu⁃minescent emission intensity reduction was 28.0%,however the light color was unchanged,suggesting that the complex can be well used in LEDs.Mainly due to the bipolar unit,the complex can efficiently absorb and be excited by the blue light(λem,max=455 nm)of GaN chips.Excited by blue-emitting GaN chips,orange-red LEDs can be fabricated by only using[(npy)2Ir(DPPTA)]PF6 as down-conversion luminescent material,and effi⁃cient neutral and warm white LEDs can be obtained when yellow-emitting Y3Al5O12∶Ce3+(YAG∶Ce3+)was used together.

关 键 词：阳离子型铱(Ⅲ)配合物 双极性单元 暖白光二极管 下转换发光材料 

分 类 号：O614[理学—无机化学] O621.22[理学—化学]