NDLI: Photoluminescence and electroluminescence of iridium(iii) complexes with 2′,6′-bis(trifluoromethyl)-2,4′-bipyridine and 1,3,4-oxadiazole/1,3,4-thiadiazole derivative ligands

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Inside back cover

Back cover

Dalton Transactions Vol - 46 Issue - 2

Dalton Transactions Vol -39

Dalton Transactions Vol -0

Photoluminescence and electroluminescence of iridium(iii) complexes with 2′,6′-bis(trifluoromethyl)-2,4′-bipyridine and 1,3,4-oxadiazole/1,3,4-thiadiazole derivative ligands

Content Provider	Royal Society of Chemistry (RSC)
Author	Zheng, You-Xuan Zhao, Yue Jing, Yi-Ming
Copyright Year	2017
Abstract	Using 2′,6′-bis(trifluoromethyl)-2,4′-bipyridine as a monoanionic cyclometalated ligand, 2-(5-(4-(trifluoromethyl)phenyl)-1,3,4-oxadiazol-2-yl)phenol and 2-(5-(4-(trifluoromethyl) phenyl)-1,3,4-thiadiazol-2-yl)phenol as ancillary ligands, two new heteroleptic iridium(III) complexes (Ir1 and Ir2) were prepared and investigated. The ancillary ligand variations affected their emissions greatly, and the complexes Ir1 and Ir2 emitted green (503 nm) and orange (579 nm) lights, respectively. Moreover, the electron mobility of the two complexes is as high as that of the electron transport material Alq3 (tris-(8-hydroxyquinoline)aluminium), which is useful for their performances in organic light-emitting diodes (OLEDs). The OLEDs with Ir1 as the emitter showed excellent performances with a maximum current efficiency of 74.8 cd A−1, a maximum external quantum efficiency of 27.0%, a maximum power efficiency of 33.4 lm W−1, and the efficiency roll-off is mild. These results suggest that complexes with 1,3,4-oxadiazole/1,3,4-thiadiazole derivatives have potential application as efficient emitters in OLEDs.
Starting Page	845
Ending Page	853
Page Count	9
File Format	HTM / HTML PDF
ISSN	14779226
Volume Number	46
Issue Number	3
Journal	Dalton Transactions
DOI	10.1039/c6dt03919g
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Bipyridine Ligand Phenyl group Phenol Iridium Electron mobility 8-Hydroxyquinoline Aluminium Quantum tunnelling
Content Type	Text
Resource Type	Article
Subject	Inorganic Chemistry

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Photoluminescence and electroluminescence of an iridium(iii) complex with 2′,6′-bis(trifluoromethyl)-2,4′-bipyridine and 2-(5-phenyl-1,3,4-thiadiazol-2-yl)phenol ligands

Syntheses, photoluminescence and electroluminescence of four heteroleptic iridium complexes with 2-(5-phenyl-1,3,4-oxadiazol-2-yl)-phenol derivatives as ancillary ligands

Photoluminescence and electroluminescence of deep red iridium(III) complexes with 2,3-diphenylquinoxaline derivatives and 1,3,4-oxadiazole derivatives ligands

Efficient green electroluminescence based on an iridium(iii) complex with different device structures

Efficient electroluminescence of bluish green iridium complexes with 2-(3,5-bis(trifluoromethyl)phenyl)pyrimidine and 2-(3,5-bis(trifluoromethyl)phenyl)-5-fluoropyrimidine as the main ligands

Shedding light on unusual photophysical properties of bis-cyclometalated iridium(III) complexes containing 2,5-diaryl-1,3,4-oxadiazole-based and acetylacetonate ligands

Enhancing the photoluminescence quantum yields of blue-emitting cationic iridium(iii) complexes bearing bisphosphine ligands

Complexes of Cu(II) with 2-Amino-5-phenyl-1,3,4-thiadiazole & 2-Amino-5-phenyl-1,3,4- oxadiazole

Efficient orange-red electroluminescence of iridium complexes with 1-(2,6-bis(trifluoromethyl)pyridin-4-yl)isoquinoline and 4-(2,6-bis(trifluoromethyl)pyridin-4-yl)quinazoline ligands.

Photoluminescence and electroluminescence of iridium(iii) complexes with 2′,6′-bis(trifluoromethyl)-2,4′-bipyridine and 1,3,4-oxadiazole/1,3,4-thiadiazole derivative ligands

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