Simple Tuning of the Optoelectronic Properties of IrIII and PtII Electrophosphors Based on Linkage Isomer Formation with a Naphthylthiazolyl Moiety

doi:10.1002/ejic.201200064

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	Simple Tuning of the Optoelectronic Properties of IrIII and PtII Electrophosphors Based on Linkage Isomer Formation with a Naphthylthiazolyl Moiety
	Xu, Xianbin 1,2; Zhao, Yongbiao 3; Dang, Jingshuang 2,4; Yang, Xiaolong 1,2; Zhou, Guijiang 1,2; Ma, Dongge 3; Wang, Lixiang 3; Wong, Wai-Yeung 5,6; Wu, Zhaoxin 7; Zhao, Xiang 2,4
刊名	EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
	2012-05-01
期号	13 页码:2278-2288
关键词	Iridium Platinum n s Li-gands Luminescence Electrophosphors Organic Light-emitting Diodes
ISSN号	1434-1948
DOI	10.1002/ejic.201200064
英文摘要	By tuning the substitution position of a thiazolyl group on the naphthalene system (a or beta site), the distinctive electronic structures associated with these functional ligands have a substantial influence on both the photophysical behavior and electroluminescent (EL) performance of the resulting linkage isomers for two series of IrIII and PtII phosphorescent emitters. The photoluminescence wavelength can be redshifted by ca. 23 nm for the linkage isomers upon replacing the beta-substituted thiazolyl-based ligand with its a-substituted counterpart in the homoleptic series of IrIII phosphors. Furthermore, the bathochromic effect can be as much as ca. 42 nm for the heteroleptic IrIII phosphors and ca. 59 nm for the PtII compounds. Similarly, metallophosphors that bear beta-substituted ligands exhibit a different EL performance with respect to that of their linkage isomers with a-substituted ligands. The best EL results associated with the triplet emitters chelated with beta-substituted ligands show a maximum brightness (Lmax) of 22563 cd?m2, an external quantum efficiency (?ext) of 12.88?%, a luminance efficiency (?L) of 30.84 cd?A1, and a power efficiency (?p) of 26.17 lm?W1, whereas the EL performance of their a-counterparts was characterized by a peak Lmax of 8653 cd?m2, ?ext of 6.18?%, ?L of 8.55 cd?A1, and ?p of 6.54 lm?W1. Owing to its unique electronic structure, the thiazolyl group is a good alternative to the pyridyl moiety to improve the EL performance of the metallophosphor. We have also demonstrated a simple and useful route to tune the functional properties of cyclometalated triplet emitters for EL applications.
语种	英语
出版者	WILEY-V C H VERLAG GMBH
WOS记录号	WOS:000303155200012
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/47761]
专题	中国科学院化学研究所
通讯作者	Zhou, Guijiang
作者单位	1.Xi An Jiao Tong Univ, MOE Key Lab Nonequilibrium Synth & Modulat Conden, Xian 710049, Peoples R China 2.Xi An Jiao Tong Univ, Dept Chem, Fac Sci, Xian 710049, Peoples R China 3.Chinese Acad Sci, State Key Lab Polymer Phys & Chem, Changchun Inst Appl Chem, Changchun 130022, Peoples R China 4.Xi An Jiao Tong Univ, Inst Chem Phys, Xian 710049, Peoples R China 5.Hong Kong Baptist Univ, Inst Mol Funct Mat, Dept Chem, Kowloon Tong, Hong Kong, Peoples R China 6.Hong Kong Baptist Univ, Inst Adv Mat, Kowloon Tong, Hong Kong, Peoples R China 7.Xi An Jiao Tong Univ, Key Lab Phys Elect & Devices, Minist Educ, Fac Elect & Informat Engn, Xian 710049, Peoples R China
推荐引用方式 GB/T 7714	Xu, Xianbin,Zhao, Yongbiao,Dang, Jingshuang,et al. Simple Tuning of the Optoelectronic Properties of IrIII and PtII Electrophosphors Based on Linkage Isomer Formation with a Naphthylthiazolyl Moiety[J]. EUROPEAN JOURNAL OF INORGANIC CHEMISTRY,2012(13):2278-2288.
APA	Xu, Xianbin.,Zhao, Yongbiao.,Dang, Jingshuang.,Yang, Xiaolong.,Zhou, Guijiang.,...&Zhao, Xiang.(2012).Simple Tuning of the Optoelectronic Properties of IrIII and PtII Electrophosphors Based on Linkage Isomer Formation with a Naphthylthiazolyl Moiety.EUROPEAN JOURNAL OF INORGANIC CHEMISTRY(13),2278-2288.
MLA	Xu, Xianbin,et al."Simple Tuning of the Optoelectronic Properties of IrIII and PtII Electrophosphors Based on Linkage Isomer Formation with a Naphthylthiazolyl Moiety".EUROPEAN JOURNAL OF INORGANIC CHEMISTRY .13(2012):2278-2288.