3236-71-3Relevant articles and documents
Synthesis and characterization of fluorene-derived PU as a thermo cross-linked hole-transporting layer for PLED
Chuang, Ching-Nan,Kuo, Chao-Hui,Cheng, Yu-Shan,Huang, Chih-Kai,Leung, Man-Kit,Hsieh, Kuo-Huang
, p. 2001 - 2007 (2012)
Novel hole-transporting polyurethane, denoted as P1, resulting from the condensation of 9, 9-bis(4-hydroxyphenyl)fluorene and isophorone diisocyanate (denoted as IPDI) has been developed. When P1 is thermally consolidated in the presence of 2-(phosphonooxy)ethyl methacrylate (P2M), it forms a distinguished hole-transport layer that leads to an extremely good performance of the phosphorescent PLED. In the study, the device of ITO/PEDOT: PSS/P1-P2M/Ir(ppy) 3-t-PBD-PVK/Mg/Ag shows a high current efficiency of 27.6 cd/A and a low turn-on voltage of 6 V. In particular, the stable output efficiency of 17-22 cd/A within the range of 420-4400 cd/m2 at 12-20 V makes P1 a promising hole-transport material for phosphorescent PLED applications.
Bifunctional ionic liquid, preparation method thereof and application of bifunctional ionic liquid in catalytic synthesis of bisphenol compounds
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Paragraph 0064-0067, (2021/08/14)
The invention discloses a bifunctional ionic liquid, a preparation method thereof and application of the bifunctional ionic liquid in catalytic synthesis of bisphenol compounds, and belongs to the field of application of ionic liquid catalysts. The bifunctional ionic liquid is composed of heterocyclic quaternary ammonium cations containing sulfonic groups and sulfydryl and organic strong acid anions containing or not containing sulfydryl. The bifunctional ionic liquid has the functions of strong protonic acid and a -SH-containing compound, is used for catalytic synthesis of diphenolic acid, bisphenol A, bisphenol fluorene and the like, and has the characteristics of high reaction rate, high target product yield and good selectivity. The bifunctional ionic liquid is a green catalyst which is stable in performance and can be recycled, and compared with a protonic acid and sulfhydryl compound composite catalyst used in a traditional production process, the production process is simplified, equipment corrosion is reduced, and the production cost is reduced.
Blue light emitter based on fluorene unit (by machine translation)
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Paragraph 0042; 0047-0048, (2020/10/21)
The invention discloses a blue light emitter based on a fluorene unit. Due to the rigid planar biphenyl structure of the fluorene, materials are prone to intermolecular aggregation, so that the color purity, the efficiency and the stability of the material are greatly reduced. , The fluorene atom is taken as the core, different groups are introduced on 9No. positions to generate a series of fluorenyl derivatives, so that the solubility, the thermal stability, the photophysical property, the energy level and the carrier mobility are finely adjusted in a wide range. The present invention proposes a unique molecular framework (e.g. FTRTRZ) that helps achieve the most organised film and the highest carrier mobility, and the connection model that has been verified to be similar to FTRTRZ is a more viable approach to the production of efficient and stable blue emitters. (by machine translation)