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Fluorenone

About: Fluorenone is a research topic. Over the lifetime, 1067 publications have been published within this topic receiving 17162 citations. The topic is also known as: Diphenylene ketone & 9-Oxofluorene.


Papers
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Journal ArticleDOI
TL;DR: In this paper, the molecular interface between an azo pigment and an α-phenylstilbene derivative where photocarriers are extrinsically produced from a microscopic viewpoint was investigated.
Abstract: We have investigated the molecular interface between an azo pigment and an α-phenylstilbene derivative where photocarriers are extrinsically produced from a microscopic viewpoint. From the measurement of the azo-pigment photoluminescence quenching by the α-phenylstilbene derivative, only the molecules that contact with the azo-pigment particles are known to promote generation of the photocarriers. The electron-transfer reaction at the interface for photocarrier generation is proven to occur adiabatically.

3 citations

Patent
17 Oct 2012
TL;DR: In this article, a method for coarse fluorene and fluorenone by taking wash oil as a raw material is presented. But the method is not suitable for the high energy consumption and high cost, environment pollution and the like.
Abstract: The invention discloses a method for preparing coarse fluorene and fluorenone by taking wash oil as a raw material. The method comprises the following steps of: firstly, carrying out acid and alkali treatment on wash oil fraction obtained by fractionating coal tar, and enriching in a rectifying way to obtain coarse fluorene; secondly, converting fluorene in the coarse fluorene into fluorenone by an air liquid phase catalytic oxidation method; and based on ethylene glycol as entrainer, carrying out azeotropic distillation on reaction mixture to separate the fluorenone in the reaction mixture. The method has the advantages that a process route of first reaction and second separation is adopted, so that the fluorenone can be directly prepared by taking the coarse fluorene as the raw material, therefore, the fluorenone can be more easily separated from the reaction mixture; and the conventional preparation method of the fluorenone by firstly separating the fluorene from the coarse fluorene can be replaced, as the conventional method has the problems such as large material loss, high energy consumption, high cost, environment pollution and the like since the fluorene is very hard to separate.

3 citations

Patent
27 Nov 2008
TL;DR: In this article, the epoxy compound containing a fluorene ring is represented by general formula (1), and the compounds of general formula are manufactured by glycidyl etherification of 9,9-bis(dihydroxyphenyl)fluorenes prepared by causing fluorenone to react with a dihydric phenol.
Abstract: PROBLEM TO BE SOLVED: To provide a low hygroscopic and highly heat-resistant epoxy compound (epoxy resin) and its manufacturing method. SOLUTION: The epoxy compound containing a fluorene ring is represented by general formula (1). The compounds of general formula (1) are manufactured by glycidyl etherification of 9,9-bis(dihydroxyphenyl)fluorenes prepared by causing fluorenone to react with a dihydric phenol. The dihydric phenol is preferably resorcinol or catechol. COPYRIGHT: (C)2009,JPO&INPIT

3 citations

Patent
15 Aug 2012
TL;DR: In this article, a "vertically" unsymmetrical spirobifluorene compound derived from conversion of methyl on a fluorene loop is presented, which has a spiral conjugation effect, high dissolubility and high heat stability.
Abstract: The invention relates to a 'vertically' unsymmetrical spirobifluorene compound derived from conversion of methyl on a fluorene loop. A structural formula of the compound is (I) shown in the source text, wherein R1 and R2 in the formula can be various electron withdrawing and donating groups such as alkyl, substituted aryl, substituted heterocyclic radical, substituted alkylene, substituted amino, chlorine, bromine, iodine and the like, and the R1 and R2 are different. 4,4'-dimethyl diphenyl which is cheap and easy to obtain is used as a raw material to be bromized and reacted with fluorenone or 2,7-substituted fluorenone to covert the methyl on the fluorine loop into various fluctional groups and the like to obtain the compound (I). The 'vertically' unsymmetrical spirobifluorene compound derived from conversion of methyl on the fluorene loop is low in cost, simple in synthetic route, high in yield and easy in industrial production, has special spiral conjugation effect, high dissolubility and high heat stability, and is widely applicable to fields of organic luminous display, organic nonlinear materials, fluorescent probes and the like.

3 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202311
202221
202124
202026
201928
201822