Matches in SemOpenAlex for { <https://semopenalex.org/work/W2033211245> ?p ?o ?g. }
- W2033211245 endingPage "1872" @default.
- W2033211245 startingPage "1872" @default.
- W2033211245 abstract "By fusing an electron-deficient ring system with the phenyl ring of a 2-phenylpyridine (ppy)-type ligand, a new and synthetically versatile strategy for the phosphorescence color tuning of cyclometalated iridium(III) and platinum(II) metallophosphors has been established. Two robust red electrophosphors with enhanced electron-injection/electron-transporting features were prepared by using an electron-trapping fluoren-9-one chromophore in the ligand design. The thermal, photophysical, redox and electrophosphorescent properties of these complexes are reported. These exciting results can be attributed to a switch of the metal-to-ligand charge-transfer (MLCT) character of the transition from the pyridyl groups in the traditional IrIII or PtII ppy-type complexes to the electron-deficient ring core, and the spectral assignments corroborate well with the electrochemical data as well as the time-dependent density functional theory (TD-DFT) calculations. The electron-withdrawing character of the fused ring results in much more stable MLCT states, inducing a substantial red-shift of the triplet emission energy from yellow to red for the IrIII complex and even green to red for the PtII counterpart. Electrophosphorescent organic light-emitting devices (OLEDs) doped with these red emitters fabricated by using vacuum evaporation technique have been realized with reasonable performance." @default.
- W2033211245 created "2016-06-24" @default.
- W2033211245 creator A5006003842 @default.
- W2033211245 creator A5015195367 @default.
- W2033211245 creator A5046546710 @default.
- W2033211245 creator A5054639075 @default.
- W2033211245 creator A5065069738 @default.
- W2033211245 creator A5073878907 @default.
- W2033211245 date "2009-01-01" @default.
- W2033211245 modified "2023-10-16" @default.
- W2033211245 title "A versatile color tuning strategy for iridium(III) and platinum(II) electrophosphors by shifting the charge-transfer states with an electron-deficient core" @default.
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