Versatile phosphorescent color tuning of highly efficient borylated iridium(III) cyclometalates by manipulating the electron-accepting capacity of the dimesitylboron group

doi:10.1039/c3tc30352g

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	Versatile phosphorescent color tuning of highly efficient borylated iridium(III) cyclometalates by manipulating the electron-accepting capacity of the dimesitylboron group
	Yang, Xiaolong 1; Sun, Ning 2; Dang, Jingshuang 3; Huang, Zuan 1; Yao, Chunliang 1; Xu, Xianbin 1; Ho, Cheuk-Lam 4,5; Zhou, Guijiang 1; Ma, Dongge 2; Zhao, Xiang 3
刊名	JOURNAL OF MATERIALS CHEMISTRY C
	2013
卷号	1 期号:20 页码:3317-3326
ISSN号	2050-7526
DOI	10.1039/c3tc30352g
英文摘要	Several phosphorescent Ir-III ppy-type complexes (ppy = 2-phenylpyridine anion) bearing dimesitylboron (B(Mes)(2)) units have been designed and some of them have been newly prepared. By changing the substitution positions with different electronic characters that can manipulate the electron-accepting ability of the attached B(Mes)(2) moieties, the direction of the metal-to-ligand charge transfer (MLCT) process for these Ir-III complexes can be either retained or shifted, which can provide a new strategy toward phosphorescent color tuning. Through computational studies, shifting the substitution position of the B(Mes)(2) moiety on the organic ligand, some electronic features, such as the electron injection/electron transporting (EI/ET) properties and charge transport balance, can also be conferred to the phosphorescent Ir-III complexes to give excellent electroluminescent (EL) characteristics. Highly efficient red phosphorescent bis(5-(dimesitylboryl)-2-phenylpyridinato) iridium(acetylacetonate) (Ir-B-1) based on the above notion shows a very good compatibility with the choice of host materials which can furnish maximum current efficiency (eta(L)) of 22.2 cd A(-1), external quantum efficiency (eta(ext)) of 14.7% and power efficiency (eta(P)) of 21.4 lm W-1 for the devices constructed with the conventional host materials. So, these exciting results will not only provide both the systematic guidelines for the phosphorescent color variation on the Ir-III complexes with B(Mes)(2) units as well as a deeper insight into the conventional color-tuning approach on ppy-type Ir-III complexes, but also offer a simple outlet to afford unique electronic features to these phosphorescent emitters to show admirable EL performance.
语种	英语
出版者	ROYAL SOC CHEMISTRY
WOS记录号	WOS:000318361200007
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/46781]
专题	中国科学院化学研究所
通讯作者	Yang, Xiaolong
作者单位	1.Xi An Jiao Tong Univ, Fac Sci, Dept Chem, MOE Key Lab Nonequilibrium Synth & Modulat Conden, Xian 710049, Peoples R China 2.Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China 3.Xi An Jiao Tong Univ, Fac Sci, Dept Chem, Inst Chem Phys, Xian 710049, Peoples R China 4.Hong Kong Baptist Univ, Dept Chem, Inst Mol Funct Mat, Kowloon Tong, Hong Kong, Peoples R China 5.Hong Kong Baptist Univ, Inst Adv Mat, Kowloon Tong, Hong Kong, Peoples R China
推荐引用方式 GB/T 7714	Yang, Xiaolong,Sun, Ning,Dang, Jingshuang,et al. Versatile phosphorescent color tuning of highly efficient borylated iridium(III) cyclometalates by manipulating the electron-accepting capacity of the dimesitylboron group[J]. JOURNAL OF MATERIALS CHEMISTRY C,2013,1(20):3317-3326.
APA	Yang, Xiaolong.,Sun, Ning.,Dang, Jingshuang.,Huang, Zuan.,Yao, Chunliang.,...&Wong, Wai-Yeung.(2013).Versatile phosphorescent color tuning of highly efficient borylated iridium(III) cyclometalates by manipulating the electron-accepting capacity of the dimesitylboron group.JOURNAL OF MATERIALS CHEMISTRY C,1(20),3317-3326.
MLA	Yang, Xiaolong,et al."Versatile phosphorescent color tuning of highly efficient borylated iridium(III) cyclometalates by manipulating the electron-accepting capacity of the dimesitylboron group".JOURNAL OF MATERIALS CHEMISTRY C 1.20(2013):3317-3326.