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- W4386397071 abstract "Abstract Corannulene‐derived materials have been extensively explored in energy storage and solar cells, however, are rarely documented as emitters in light‐emitting sensors and organic light‐emitting diodes (OLEDs), due to low exciton utilization. Here, we report a family of multi‐donor and acceptor (multi‐D‐A) motifs, TCzPhCor, TDMACPhCor, and TPXZPhCor, using corannulene as the acceptor and carbazole (Cz), 9,10‐dihydro‐9,10‐dimethylacridine (DMAC), and phenoxazine (PXZ) as the donor, respectively. By decorating corannulene with different donors, multiple phosphorescence is realized. Theoretical and photophysical investigations reveal that TCzPhCor shows room‐temperature phosphorescence (RTP) from the lowest‐lying T 1 ; however, for TDMACPhCor, dual RTP originating from a higher‐lying T 1 (T 1 H ) and a lower‐lying T 1 (T 1 L ) can be observed, while for TPXZPhCor, T 1 H ‐dominated RTP occurs resulting from a stabilized high‐energy T 1 geometry. Benefiting from the high‐temperature sensitivity of TPXZPhCor, high color‐resolution temperature sensing is achieved. Besides, due to degenerate S 1 and T 1 H states of TPXZPhCor, the first corannulene‐based solution‐processed afterglow OLEDs is investigated. The afterglow OLED with TPXZPhCor shows a maximum external quantum efficiency (EQE max ) and a luminance (L max ) of 3.3 % and 5167 cd m −2 , respectively, which is one of the most efficient afterglow RTP OLEDs reported to date." @default.
- W4386397071 created "2023-09-03" @default.
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- W4386397071 date "2023-09-15" @default.
- W4386397071 modified "2023-10-18" @default.
- W4386397071 title "Room‐Temperature Multiple Phosphorescence from Functionalized Corannulenes: Temperature Sensing and Afterglow Organic Light‐Emitting Diode" @default.
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- W4386397071 doi "https://doi.org/10.1002/ange.202309718" @default.
- W4386397071 hasPublicationYear "2023" @default.
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