1239448-99-7Relevant academic research and scientific papers
Highly efficient blue TADF emitters incorporating bulky acridine moieties and their application in solution-processed OLEDs
Chen, Qiaodeng,Xiang, Yepeng,Yin, Xiaojun,Hu, Kai,Li, Yongfeng,Cheng, Xiaoling,Liu, Yuan,Xie, Guohua,Yang, Chuluo
, (2021)
Two bulky acridine moieties, 9,9-diphenyl-9,10-dihydroacridine (DPAc) and 10H-spiro [acridine-9,9′-fluorene] (SpiroAc), were selected as electron donors. Compared with commonly used 9,9-dimethyl-9,10-dihydroacridine (DMAc), phenyl modified acridines exhibited low-lying highest occupied molecular orbital (HOMO) levels and relatively weak electron-donating abilities, which make them potential units to create blue TADF emitter. DPAc and SpiroAc were connected with a triarylboron group and constructed centrosymmetric 3D-A architectures, namely 3DPAc-TB and 3SpiroAc-TB, respectively. Density functional theory calculations showed that both molecules exhibited large dihedral angles between the triarylboron unit and acridine planes. The well-separated frontier molecular orbitals contributed to small energy gaps between S1 and T1 states of the designed molecules (0.12 and 0.07 eV, respectively). Both molecules exhibited distinct thermally activated delayed fluorescence (TADF) character. The bulky acridine donors endowed both molecules with rigid structures and realized high photoluminescent quantum yields (71.6% and 84.3%, respectively). Solution-processed organic light-emitting diodes (OLEDs) utilizing 3DPAc-TB and 3SpiroAc-TB as emitters exhibited blue emissions with emission peaks of 472 nm and 490 nm, respectively. The maximum external quantum efficiencies of 3DPAc-TB and 3SpiroAc-TB based devices were 12.8% and 17.3%, respectively.
Fluorescent probe for detecting high-concentration γ - glutamyl transpeptidase and preparation method thereof
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Paragraph 0054-0057; 0062-0065; 0070-0073, (2021/03/18)
The invention provides a fluorescent probe for detecting high-concentration gamma-Glutamyl Transpeptidase, which solves the problem of selective response to abnormally high-concentration gamma-Glutamyl Transpeptidase in vivo. The fluorescent probe of the invention starts to produce obvious fluorescence changes after the gamma-Glutamyl Transpeptidase is higher than the normal concentration of humanbody, and as the concentration of gamma-Glutamyl Transpeptidase increases, the fluorescent probe solution of the invention produces large fluorescence enhancement and obvious color change. At the same time, after the fluorescent probe of the invention reacts with gamma-Glutamyl Transpeptidase, the permeability of the cell membrane is greatly enhanced, and when applied to cell imaging, the fluorescent probe can selectively image ovarian cancer cells with high expression of gamma-Glutamyl Transpeptidase. According to the invention, the synthesis process is simple and feasible, the raw materialsare cheap and easy to obtain, the preparation cost is low, and the preparation method is easy to popularize.
A water-soluble two-photon ratiometric triarylboron probe with nucleolar targeting by preferential RNA binding
Liu, Jun,Zhang, Shilu,Zhang, Chenghua,Dong, Jun,Shen, Chengyi,Zhu, Jiang,Xu, Huajun,Fu, Mingkai,Yang, Guoqiang,Zhang, Xiaoming
supporting information, p. 11476 - 11479 (2017/10/23)
By functionalizing triarylboron with cyclen, we developed a two-photon fluorescence probe, TAB-2, which can selectively bind RNA with a ratiometric readout. We tested TAB-2 in NIH/3T3 fibroblast cells, and demonstrated its capability in visualizing nucleoli and analyzing microenvironment polarity by two-photon and fluorescence-lifetime imaging microscopy.
Boron-containing monopyrrolo-annelated tetra thiafulvalene compounds: Synthesis and absorption spectral/electrochemical responsiveness toward fluoride Ion
Li, Jing,Zhang, Guanxin,Zhang, Deqing,Zheng, Renhui,Shi, Qiang,Zhu, Daoben
supporting information; experimental part, p. 5330 - 5333 (2010/10/19)
(Figure presented) Two new boron-based conjugated compounds 1 and 2 containing one and three monopyrrolo-annelated tetrathiafulvalene (TTF) unit(s) were synthesized and characterized. They exhibit typical ICT absorptions which can be modulated after addit
