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Crystal Structure and Photophysical Properties of an Iridium(III) Pyrazine Complex
被引:2
|作者:

Wei Chuan-Dong
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Ningbo Univ, Fac Mat Sci & Chem Engn, State Key Lab Base Novel Funct Mat & Preparat Sci, Ningbo 315211, Zhejiang, Peoples R China Ningbo Univ, Fac Mat Sci & Chem Engn, State Key Lab Base Novel Funct Mat & Preparat Sci, Ningbo 315211, Zhejiang, Peoples R China

Ge Guo-Ping
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Ningbo Univ, Fac Mat Sci & Chem Engn, State Key Lab Base Novel Funct Mat & Preparat Sci, Ningbo 315211, Zhejiang, Peoples R China Ningbo Univ, Fac Mat Sci & Chem Engn, State Key Lab Base Novel Funct Mat & Preparat Sci, Ningbo 315211, Zhejiang, Peoples R China

Li Chun-Yan
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Ningbo Univ, Fac Mat Sci & Chem Engn, State Key Lab Base Novel Funct Mat & Preparat Sci, Ningbo 315211, Zhejiang, Peoples R China Ningbo Univ, Fac Mat Sci & Chem Engn, State Key Lab Base Novel Funct Mat & Preparat Sci, Ningbo 315211, Zhejiang, Peoples R China

Lei Ke-Wei
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Ningbo Univ, Fac Mat Sci & Chem Engn, State Key Lab Base Novel Funct Mat & Preparat Sci, Ningbo 315211, Zhejiang, Peoples R China Ningbo Univ, Fac Mat Sci & Chem Engn, State Key Lab Base Novel Funct Mat & Preparat Sci, Ningbo 315211, Zhejiang, Peoples R China

Liang Hong-Ze
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Ningbo Univ, Fac Mat Sci & Chem Engn, State Key Lab Base Novel Funct Mat & Preparat Sci, Ningbo 315211, Zhejiang, Peoples R China Ningbo Univ, Fac Mat Sci & Chem Engn, State Key Lab Base Novel Funct Mat & Preparat Sci, Ningbo 315211, Zhejiang, Peoples R China

Yu Gang
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Peking Univ, Coll Chem & Mol Engn, State Key Lab Rare Earth Mat Chem & Applicat, Beijing 100871, Peoples R China Ningbo Univ, Fac Mat Sci & Chem Engn, State Key Lab Base Novel Funct Mat & Preparat Sci, Ningbo 315211, Zhejiang, Peoples R China

Liu Zhi-Wei
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Peking Univ, Coll Chem & Mol Engn, State Key Lab Rare Earth Mat Chem & Applicat, Beijing 100871, Peoples R China Ningbo Univ, Fac Mat Sci & Chem Engn, State Key Lab Base Novel Funct Mat & Preparat Sci, Ningbo 315211, Zhejiang, Peoples R China
机构:
[1] Ningbo Univ, Fac Mat Sci & Chem Engn, State Key Lab Base Novel Funct Mat & Preparat Sci, Ningbo 315211, Zhejiang, Peoples R China
[2] Peking Univ, Coll Chem & Mol Engn, State Key Lab Rare Earth Mat Chem & Applicat, Beijing 100871, Peoples R China
关键词:
Iridium(III) complex;
Pyrazine;
Phosphorescent material;
Organic light-emitting diode;
LIGHT-EMITTING-DIODES;
ELECTROLUMINESCENT DEVICES;
PHOSPHORESCENT EMISSION;
RED PHOSPHORESCENCE;
ROOM-TEMPERATURE;
LUMINESCENCE;
ELECTROPHOSPHORESCENCE;
EFFICIENCY;
LIGANDS;
COLOR;
D O I:
10.3866/PKU.WHXB201411212
中图分类号:
O64 [物理化学(理论化学)、化学物理学];
学科分类号:
070304 ;
081704 ;
摘要:
An iridium(III) complex of (MDPPF)(2)Ir(acac) (MDPPF=4,4'-difluoro-5-methyl-2,3-diphenylpyrazine, acac=acetylacetone) has been prepared and characterized by X-ray single crystal diffraction. The photophysical properties of (MDPPF)(2)Ir(acac) were investigated using UV-Vis spectroscopy and photoluminescence (PL) techniques. X-ray diffraction (XRD) studies revealed that the complex belongs to a triclinic system of the P (1) over bar space group with cell dimensions a=1.13984(3) nm, b=1.26718(3) nm, c=1.29541(3) nm, alpha=93.7181(19)degrees, beta=101.638(2)degrees, gamma=110.853(3)degrees and V=1.69336(7) nm(3). A solution of the (MDPPF)(2)Ir(acac) complex in dichloromethane was found to emit yellow light with a maximum peak at 555 nm at room temperature. Furthermore, (MDPPF)(2)Ir(acac) was used as a phosphorescence dopant in organic light-emitting diodes (OLEDs) with the structures of ITO/NPB (40 nm)/CBP:(MDPPF)(2)Ir(acac) (20 nm)/TPBi (10 nm)/Alq(3) (30 nm)/LiF (1 nm)/Al (100 nm). These devices showed yellow emission at 558 nm, a maximum brightness of 32700 cd.m(-2), current efficiency of 44.7 cd.A(-1) and power efficiency of 20.7 lm.W-1.
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页码:17 / 22
页数:6
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