Effect of fluorine substitution of the β-ketoiminate ancillary ligand on photophysical properties and electroluminescence ability of new iridium(iii) complexes

2018 ◽  
Vol 6 (32) ◽  
pp. 8688-8708 ◽  
Author(s):  
Ewelina Witkowska ◽  
Gabriela Wiosna-Salyga ◽  
Ireneusz Glowacki ◽  
Bartosz Orwat ◽  
Myong-joon Oh ◽  
...  

The influence and emissive properties of N,O-donating ligands with fluorinatedN-aryl moieties on the electronic structure of complexes of the formula [Ir(bzq)2(O∧N)] are reported.

2021 ◽  
Author(s):  
Tong Chen ◽  
Deming Han ◽  
Lihui Zhao ◽  
Bao Wang ◽  
Xiaohong Shang

Abstract By using density functional theory (DFT) and time-dependent density functional theory (TDDFT), the geometrical structure, electronic structure and photophysical properties of a series of mixed-carbene cyclometalated iridium(III) complexes with different ancillary ligand have been explored. The frontier molecular orbital (FMO) components and energy levels for all studied complexes have been investigated. The lowest lying absorptions were calculated to be at 327, 322, 333, 332 and 332 nm for these complexes, which have the transition configuration of HOMO→LUMO. The lowest energy emissions for these complexes are localized at 413, 399, 498, 418 and 415 nm, respectively, simulated in CH2Cl2 medium at the M062X level. One complex designed could possess the largest radiative decay rate (kr) value and be a potential candidate for blue emitters in organic light-emitting diodes (OLEDs). The theoretical study can provide a useful guidance for design and synthesis of new iridium(III) complexes in phosphorescent materials.


Author(s):  
Huimin Guo ◽  
Xiaolin Ma ◽  
Zhiwen Lei ◽  
Yang Qiu ◽  
Bernhard Dick ◽  
...  

The electronic structure and photophysical properties of a series of N-Methyl and N-Acetyl substituted alloxazine (AZs) were investigated with extensive density functional theory (DFT) and time-dependent density functional theory (TD-DFT)...


2019 ◽  
Vol 43 (25) ◽  
pp. 9916-9923 ◽  
Author(s):  
Jing Gao ◽  
Xin Li ◽  
Deming Han ◽  
Jiawei Li ◽  
Xiaohong Shang

The electronic structure, absorption and emission spectra, charge injection/transport ability and phosphorescence quantum efficiency of a series of cyclometalated iridium(iii) complexes with different ancillary ligands are studied using density functional theory (DFT) and time-dependent density functional theory (TDDFT) methods.


2020 ◽  
Vol 175 ◽  
pp. 108115
Author(s):  
Zhi-Bin Cai ◽  
Li-Jun Chen ◽  
Sheng-Li Li ◽  
Qing Ye ◽  
Yu-Peng Tian

1979 ◽  
Vol 10 (8) ◽  
Author(s):  
A. BIGOTTO ◽  
V. GALASSO ◽  
F. P. COLONNA ◽  
G. DISTEFANO ◽  
G. C. PAPPALARDO ◽  
...  

2015 ◽  
Vol 54 (16) ◽  
pp. 7915-7928 ◽  
Author(s):  
Yuriy V. Zatsikha ◽  
Eranda Maligaspe ◽  
Anatolii A. Purchel ◽  
Natalia O. Didukh ◽  
Yefeng Wang ◽  
...  

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