GUO Qing-mei, YANG Zhi-yu, HUANG Guo-li etc. Synthesis and Properties of Ir(Ⅲ) Complexes Based on 2-(Phenylsulfonyl) Acetophenone Derivatives as Auxiliary Ligands[J]. Chinese Journal of Luminescence, 2018,39(5): 633-642
GUO Qing-mei, YANG Zhi-yu, HUANG Guo-li etc. Synthesis and Properties of Ir(Ⅲ) Complexes Based on 2-(Phenylsulfonyl) Acetophenone Derivatives as Auxiliary Ligands[J]. Chinese Journal of Luminescence, 2018,39(5): 633-642 DOI: 10.3788/fgxb20183905.0633.
Synthesis and Properties of Ir(Ⅲ) Complexes Based on 2-(Phenylsulfonyl) Acetophenone Derivatives as Auxiliary Ligands
Using 2-(phenylsulfonyl) acetophenone derivatives as the ancillary ligands
and 2-phenylpyridine derivatives as the main ligands
six iridium complexes (1:(dfppy)
2
Ir(PSAP)
2:(tfmppy)
2
Ir(PSAP)
3:(ftfmppy)
2
Ir(PSAP)
4:(dfppy)
2
Ir(TSAP)
5:(tfmppy)
2
Ir(TSAP)
6:(ftfmppy)
2
Ir(TSAP)) were synthesized
respectively. The complexes show phosphorescence emission maxima from 450 nm to 502 nm in CH
2
Cl
2
solution with the quantum efficiencies from 13.2% to 51.1%
respectively. All the complexes exhibit emissions peaked from 482 nm to 503 nm in solid state
respectively. By using these complexes solid powder as emitters
the light emitting diodes with the blue GaN material as substrate were prepared. The CIE color coordinates are in blue-green and yellow-green regions for the LED based on all the complexes. The maximum light emitting efficiency value for (ftfmppy)
2
Ir(TSAP) based LED is 5.6 lmW
-1
and the color of (dfppy)
2
Ir(PSAP) based LED (0.316
0.431) is almost near-white.
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Keywords
references
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