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.

New polymer emitting blue light as light-emitting display device

Abstract: PURPOSE: Provided is a new polymer emitting blue light as light-emitting display device, which is fluorenene based derivative by performing a methylene of fluorenone based derivative having steric hindrance. CONSTITUTION: A preparation method of co-polymer emitting blue light comprises the following steps: (i) performing methylenation of 9-fluorenone of formula 1 and derivative thereof by using Tebbe to 9-fluorenene of formula 2 and derivative thereof; (ii) obtaining a living co-polymer whose mole number and molecular weight of fluorene based unit are controlled by co-polymerizing the 9-fluorenene and derivative thereof with vinyl based monomer through using alkyl lithium and alkali metal naphthalenide initiator in the presence of polar or non-polar solvent; (iii) obtaining a block co-polymer by co-polymerizing the living co-polymer obtained in step (ii) with monomer for manufacturing polymer electrolyte, R2 is H, F, Cl, N(CH3)2, OSi(CH3)2(t-Bu), R3 is H or Cl, R2 and R3 are not always same, R4 and R5 are H, F, N(CH3)2, OH or NH2 independently.

Method for preparing high-purity 9-fluorenone from high-purity fluorene

Abstract: The invention discloses a method for preparing high-purity 9-fluorenone from high-purity fluorene The high-purity 9-fluorenone is prepared by using high-purity fluorene as a raw material, alkali as a catalyst, an aromatic organic solvent and water as a solvent and a quaternary ammonium salt as a phase transfer agent The preparation method disclosed by the invention comprises the steps of purifying industrial fluorene of which the purity is more than or equal to 95% at first, and then preparing the 9-fluorenone by using the high-purity fluorene, so that a purification process of the product namely 9-fluorenone which is difficult to purify is avoided, and the preparation process is simplified Under the condition of the invention, the conversion rate of fluorene can reach 100%, and fluorenone with the purity of 100% can be obtained; after a reaction solution is cooled and crystal fluorenone is separated out, the filtrate containing the alkali, quaternary ammonium salt, fluorene and fluorenone is directly recycled, and a high-boiling-point solvent is used for absorbing the solvent in the reaction tail gas, so that the method is an energy-saving and environment-friendly chemical process

Dinuclear Pd(II) and Pt(II) compounds bearing a bridging π-conjugated moiety: synthesis and reactivity toward alkynes and isocyanides

Abstract: Dinuclear Pd(II) halides that contain bridging π-conjugated groups, trans,trans-[(PR3)2(X)Pd–Y–Pd(X)(PR3)2] (X = Br; YH2 = terpyridine, fluorenone, benzil, benzthiadiazole), were prepared by the ox...

Design, synthesis and structure-property relationship of fluorenone-based derivatives for fluorescent OLEDs

Abstract: Four fluorenone-based materials were designed, prepared and characterized for organic light emitting diodes. These derivatives possess relatively high thermal stability with the 5% mass loss temper...