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- W4282944567 abstract "Herein, three hydroxy-tetraphenylimidazole (HPI)-based fluorophores (HPI-TPA, HPI-PCz, and HPI-CzP) are designed and synthesized by disubstituted HPI core with arylamine units of triphenylamine (TPA), phenyl carbazole (PCz), and carbazole phenyl (CzP) at 3,5-positions of the N-phenyl ring of HPI, respectively. Their photophysical properties are theoretically and experimentally examined. HPI-TPA shows a hybridized local and charge transfer (HLCT) excited state characteristic and emits deep blue color via an HLCT mechanism, while both HPI-PCz and HPI-CzP exhibit excited-state intramolecular proton transfer (ESIPT) property and display pure keto form emissions. They possess high thermal stability and are successfully fabricated as emitters in organic light-emitting diodes (OLEDs). All devices exhibit intense blue color emissions with low turn-on voltages (3.5-3.7 V). Particularly, HPI-TPA-based OLED emits light in the deep-blue region with a high maximum external quantum efficiency (EQEmax ) of 3.77% and a decent efficiency roll-off." @default.
- W4282944567 created "2022-06-16" @default.
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- W4282944567 date "2022-05-24" @default.
- W4282944567 modified "2023-10-01" @default.
- W4282944567 title "Hydroxy‐Tetraphenylimidazole Derivatives as Efficient Blue Emissive Materials for Electroluminescent Devices" @default.
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- W4282944567 doi "https://doi.org/10.1002/asia.202200266" @default.
- W4282944567 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/35608795" @default.
- W4282944567 hasPublicationYear "2022" @default.
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