63108-00-9Relevant academic research and scientific papers
Thermoresponsive luminescence properties of polyfluorinated bistolane-type light-emitting liquid crystals
Yamada, Shigeyuki,Morita, Masato,Agou, Tomohiro,Kubota, Toshio,Ichikawa, Takahiro,Konno, Tsutomu
supporting information, p. 5609 - 5617 (2018/08/17)
We developed and characterized four polyfluorinated bistolane derivatives. These compounds, which possess either two alkoxy substituents or an alkoxy group and a bromine atom in their two molecular terminals, were synthesized from readily available 4-alko
Synthesis and characterization of fluorinated heterofluorenecontaining donor-acceptor systems
Geramita, Katharine,Tao, Yuefei,Segalman, Rachel A.,Don Tilley
experimental part, p. 1871 - 1887 (2010/07/02)
Chemical Equation Presented A series of oligothiophene- perfluoro-9-heterofluorene donor-acceptor (DA) compounds was synthesized via a combination of nucleophilic aromatic substitution (SNArF) and palladium coupling reactions. These compounds are of interest as possible building blocks for materials with useful electron transport properties, since they possess relatively low LUMO energy levels of-3.3 to -3.6 eV (as determined by differential pulse voltammetry). The HOMO-LUMO energy gaps, as determined by UV-vis spectroscopy, range between 2.4 and 2.5 eV, and photoluminescence emission spectra reveal λems values in the range of 480-600 nm (corresponding to yellow-orange emission). Dilute solution-state photoluminescence quantum yields were significantly lower than those of the pure acceptor heterofluorenes (0.02-0.38 for the DA compounds vs ～1 for the pure acceptors), and notable solvatochromism in the fluorescence suggests emission from a charge-separated state. Theoretical calculations show that HOMO-level electron density is more localized on the thiophene fragment, while the LUMO level electron density is mostly associated with the electron-deficient portion of the molecule. Photovoltaic (PV) devices based on DA/poly-3-hexylthiophene (P3HT) blends exhibit improved performance over P3HT-only devices, suggesting the ability of these DA compounds to transport electrons in the solid state.
Organothallium Compounds. XVIII The Effect of Antimony Pentafluoride and Fluorosulfuric Acid on the Thallation of Polyfluoroarenes
Deacon, Glen B.,Smith, Richard N.M.
, p. 1587 - 1597 (2007/10/02)
The polyfluoroarenes m-H2C6F4, m-O2NC6F4H, m- and p-BrC6F4H, (p-HC6F4)2, C6F5H, 1,3,5-F3C6H3 and m-FSO2C6F4H have been thallated by thallic trifluoroacetate in fluorosulfuric acid in the presence of antimony pentafluoride.Substantial dithallation of m-H2C6F4 and 1,3,5-F3C6H3 and slight trithallation of the latter have been achieved.The products were identified by conversion into the corresponding polyfluoroiodoarenes on reaction with aqueous sodium iodide.From the reaction with pentafluorobenzene, pentafluorophenylthallium(III) species have been characterized. 1,2,4,5-Tetrafluoro-3-methoxybenzene was thallated by thallic trifluoroacetate in 1,2-dichloroethane in the presence of boron trifluoride etherate, but C6F5H and p-MeC6F4H failed to react.
