Topic
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.
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40 citations
TL;DR: A fluorenone based alternating copolymer with a furan based fused aromatic moiety with a small band gap with a lower HOMO value has been designed and synthesized and tested as the active layer in organic thin-film transistors.
40 citations
TL;DR: A solution-processable acceptor-acceptor conjugated copolymer (P1) based on perylene diimide (PDI) incorporating planar electron-deficient fluorenone was synthesized by palladium(0)-catalyzed Suzuki coupling reaction as discussed by the authors.
Abstract: A new solution-processable acceptor-acceptor conjugated copolymer (P1) based on perylene diimide (PDI) incorporating planar electron-deficient fluorenone was synthesized by palladium(0)-catalyzed Suzuki coupling reaction. Relative to the donor-acceptor conjugated copolymer (P2) of PDI and dithienothiophene, polymer P1 exhibits 0.1 eV down shift of lowest unoccupied molecular orbital (LUMO) level, 70 nm blue shift of low-energy absorption band, and 0.36 eV increase of optical band gap. Polymer P1 in top-contact bottom-gate organic field-effect transistors exhibits a saturation electron mobility of 0.01 cm2/(V s) in air, while P2 does not function in the same device in air. The better air stability of P1 is attributed to a more dense packing of the polymer chains excluding oxygen or water and lower LUMO level of P1. © 2012 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem, 2012
40 citations
TL;DR: In this paper, the degradation of a structurally analogous oligophenylene model compound in the presence of hydroxyl radicals using NMR spectroscopy and mass spectrometry was investigated.
Abstract: The perceived poor durability of hydrocarbon polymer electrolyte membranes remains a significant hurdle for the integration of nonfluorous, solid polymer electrolytes into electrochemical systems such as fuel cells. In order to elucidate the mechanism of free radical degradation in a promising class of hydrocarbon polymer electrolyte membranes based on sulfonated phenylated polyphenylenes (sPPP), we synthesized and studied the degradation of a structurally analogous oligophenylene model compound in the presence of hydroxyl radicals using NMR spectroscopy and mass spectrometry. Degradation is demonstrated to be initiated by the oxidation of pendant phenyl rings to carboxylic acids, which form fluorenone substructures via intramolecular reaction with a juxtaposed phenyl ring. Upon further oxidation, these substructures can lead to ring-opening of a core phenyl ring which, if occurring in sPPP, leads to chain-scission of the polymer backbone. In keeping with this hypothesis, molecular weights of sPPP are fou...
39 citations
TL;DR: The synthesis and characterisation of a soluble poly(fluorenone) is presented, a polymer with high electron affinity with potential for use in plastic electronic devices as an n-type material.
39 citations