109941-49-3Relevant academic research and scientific papers
3-Benzoyl-4H-chromen-4-one: A novel twisted acceptor for highly efficient thermally activated delayed fluorescence emitters
Chen, Jinlei,Chen, Shanyong,Guan, Youwei,Li, Lu,Wang, Peng,Yan, Xingwu,Yu, Hong,Yu, Junsheng
, (2020)
In this work, a novel twisted 3-benzoyl-4H-chromen-4-one (BZC) acceptor is reported and a BZC-based thermally activated delayed fluorescence (TADF) emitter, 3-(4-(10H-phenoxazin-10-yl)benzoyl)-4H-chromen-4-one (BZC-PXZ), is developed. The unique structure of BZC endows BZC-PXZ with favorable molecular and stacking structures. First, the small and twisted structure of BZC group not only brings about large dihedral angle (88.78°) between donor and acceptor groups, but also efficiently prevents π???π interaction. Second, the three oxygen atoms of BZC group bring about abundant weak intermolecular interactions which can enhance the charge-transporting ability of BZC-PXZ and facilitate the exciton recombination on it. As a result, BZC-PXZ exhibits small singlet-triplet energy splitting (0.02 eV) and high photoluminescence quantum yield (93percent) simultaneously. Meanwhile, the BZC-PXZ-based device displays high efficiency (64.6 cd/A, 69.0 lm/W, 21.3percent), high exciton utilization efficiency (77.2percent) and low roll-off of efficiencies even at ultralow doped concentration of 1percent. These results demonstrate that BZC group is a good acceptor for developing high-performance TADF emitters.
Photoactivated novel organic small-molecular matrixes and preparation method thereof, and application of photoactivated novel organic small-molecular matrixes in MALDI mass spectrometric detection
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Paragraph 0039; 0107-0108; 0110, (2021/04/10)
The invention provides photoactivated novel organic small-molecular matrixes and a preparation method thereof, and application of the photoactivated novel organic small-molecular matrixes in MALDI mass spectrometric detection. According to the invention,
D-A type TADF-based new material as well as preparation method and application thereof
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, (2020/06/05)
The invention discloses a new material based on D-A type TADF and a preparation method and application thereof. The structural formula of the new material is shown as a formula (I), and CZB-PXZ is finally synthesized through generation of PHXB-1, PHXB-2,
