Tuning the Emission Color of Iridium(III) Complexes with Ancillary Ligands: A Combined Experimental and Theoretical Study

2009 ◽  
Vol 2009 (16) ◽  
pp. 2407-2414 ◽  
Author(s):  
Xin Gu ◽  
Teng Fei ◽  
Houyu Zhang ◽  
Hai Xu ◽  
Bing Yang ◽  
...  
Keyword(s):  
Theoretical Study ◽  
Ancillary Ligands ◽  
Emission Color

Emission energy of azole-based ionic iridium(iii) complexes: a theoretical study

2015 ◽  
Vol 44 (18) ◽  
pp. 8497-8505 ◽  
Author(s):  
Paula Pla ◽  
José M. Junquera-Hernández ◽  
Henk J. Bolink ◽  
Enrique Ortí
Keyword(s):  
Theoretical Study ◽  
Emission Energy ◽  
Emission Color ◽  
Azole Ring

Tuning the emission color of azole-based iridium(iii) complexes by changing the number and position of nitrogen atoms in the azole ring.

A theoretical study on the injection, transport, absorption and phosphorescence properties of heteroleptic iridium(iii) complexes with different ancillary ligands

2014 ◽  
Vol 13 (3) ◽  
pp. 574-582 ◽  
Author(s):  
Xiaohong Shang ◽  
Ning Wan ◽  
Deming Han ◽  
Gang Zhang
Keyword(s):  
Electronic Structures ◽  
Theoretical Study ◽  
Photophysical Properties ◽  
Ancillary Ligands

A series of heteroleptic iridium(iii) complexes have been theoretically investigated on their electronic structures, photophysical properties, and the phosphorescent efficiency mechanism.

scholarly journals Enhanced quantum yields by sterically demanding aryl-substituted β-diketonate ancillary ligands

2018 ◽  
Vol 14 ◽  
pp. 664-671 ◽  
Author(s):  
Rebecca Pittkowski ◽  
Thomas Strassner
Keyword(s):  
Quantum Yields ◽  
Ancillary Ligands ◽  
Light Emitting ◽  
Light Emitting Devices ◽  
Emission Color ◽  
Decay Times ◽  
Sterically Demanding ◽  
Cyclometalated Complexes ◽  
Blue Spectral Region ◽  
Methyl Phenyl

Luminescent organometallic platinum(II) compounds are of interest as phosphors for organic light emitting devices. Their emissive properties can be tuned by variation of the ligands or by specific electron-withdrawing or electron-donating substituents. Different ancillary ligands can have a profound impact on the emission color and emission efficiency of these complexes. We studied the influence of sterically hindered, aryl-substituted β-diketonates on the emission properties of C^C* cyclometalated complexes, employing the unsubstituted methyl-phenyl-imidazolium ligand. The quantum yield was significantly enhanced by changing the auxiliary ligand from acetylacetonate, where the corresponding platinum(II) complex shows only a very weak emission, to mesityl (mes) or duryl (dur) substituted acetylacetonates. The new complexes show very efficient emission with quantum yields >70% in the sky-blue spectral region (480 nm) and short decay times (<3 μs).

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