75620-93-8Relevant articles and documents
Synthesis and Characterization of Compounds Based on Carbazole and Sulfone Groups
Jia, Huixian,Feng, Chenghong,Han, Wanfei,Xue, Yan,Jin, Yanren,Li, Dongfeng
, p. 267 - 274 (2021/11/17)
Two compounds containing carbazole and sulfone groups with different alkyl chain lengths have been designed and synthesized. The sulfone group has strong absorption characteristics and the alkoxy chain and carbazole group are electron-rich, forming D-δ-A-type symmetrical molecules. The molecules have the characteristics of charge transfer and high thermal stability, and the molecules stack to form a layered staggered stack, reducing the intermolecular π–π interactions. The target compounds also exhibit strong ultraviolet-fluorescent emission in the solid state at room temperature, and they are expected to be good luminescent materials. Graphical Abstract: [Figure not available: see fulltext.]
A organic long afterglow compound and its preparation method and application (by machine translation)
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Paragraph 0089; 0091-0094, (2019/10/23)
The invention relates to a kind of organic long afterglow compound and its preparation method and application, the organic long afterglow compounds have the formula (I) indicated by the structure, the present invention provides compounds of formula (I) have shown long afterglow compound long service life, and different structure sub compound of different service life, various colors, when the stop of the excitation light source is illuminated, its emitted light by the fluorescence can be realized to the phosphorescent color change, after gradually reducing the brightness, the nature of the time-resolved technology can be combined with the four-dimensional coding, a large amount of information storage and information encryption. (by machine translation)
Highly uniform supramolecular nano-films derived from carbazole-containing perylene diimide: Via surface-supported self-assembly and their electrically bistable memory behavior
Khan, Qudrat Ullah,Tian, Guofeng,Bao, Lin,Qi, Shengli,Wu, Dezhen
supporting information, p. 11506 - 11515 (2018/07/25)
For electrical memory applications, two perylenetetracarboxylic diimide (PDI) derivatives, N,N′-(6-carbazole hexyl)-1,7-di(4-tert-butylphenoxy)perylene-3,4,9,10-tetracarboxylic diimide (PDI-6Cz) and N,N′-(2-carbazole ethyl)-1,7-di(4-tert-butylphenoxy)perylene-3,4,9,10-tetracarboxylic diimide (PDI-2Cz), were synthesized and their surface-supported self-assembly behaviors were investigated. PDI-2Cz tends to self-organize into regular rods, which are proved to be hexagonal lattices with single crystal nature, based on which memory device fabrication and electrically bistable behavior evaluation are technically infeasible. Whereas PDI-6Cz readily self-assembles into highly uniform nano-films with a considerably smooth surface, in which the X-ray diffraction study indicates strong π-π stacking between the aromatic skeletons. Further characterization indicates that sandwich memory devices using a PDI-6Cz nano-film as the active layer exhibit reprogrammable flash-type memory behavior with a switching-on voltage of ca. 0.8 V and an ON/OFF current ratio of 104. Besides, the devices exhibit excellent long-term operation stability, enduring up to 108 reading cycles without obvious current variation and an ultrafast switching response period of less than 20 ns. Photophysical and electrochemical measurements and DFT molecular simulations were conducted to determine the electronic transition occurring in the supramolecular self-assembled nano-film. Compared with organic storage materials based on polymers, the current memory device exhibits lower threshold voltage and more rapid response speed, which provides a new way for developing high-performance organic data storage materials.
