Controlling Catenations, Properties and Relative Ring-Component Movements in Catenanes with Aromatic Fluorine Substituents
作者:Roberto Ballardini、Vincenzo Balzani、Alberto Credi、Christopher L. Brown、Richard E. Gillard、Marco Montalti、Douglas Philp、J. Fraser Stoddart、Margherita Venturi、Andrew J. P. White、Brian J. Williams、David J. Williams
DOI:10.1021/ja970640a
日期:1997.12.1
of the hydroquinone rings in bis-p-phenylene-34-crown-10 had only a small effect on the percentage yields, whereas employing bis-p-phenylene-34-crown-10 derivatives, in which both hydroquinone rings have been at least partially fluorinated, resulted in a dramatic decrease in catenation yields. In [2]catenanes incorporating macrocyclic polyethers containing one hydroquinone and one fluorinated hydroquinone
THE application of gasâliquid partition chromatography to organic fluorine chemistry1,2 has enabled us to extend our studies on dehydrofluorination to a nonafluorocyclohexane (I) (b.p. 92°) which has been obtained3,4 by passage of benzene vapour over cobaltic fluoride at about 150°. With concentrated aqueous potassium hydroxide, this polyfluoride (I) gave a complex mixture (b.p. 60â90°) which was shown by analytical gas-chromatography to contain nine individual components. These were separated by use of the preparative-scale gas chromatographic column, and the structures of some of them have been determined by spectroscopic examination, oxidative degradation, addition reactions, etc.
A non-aqueous electrolyte secondary battery capable of quickly interrupting overcharge current and overcharge reactions even if overcharged during charge with a great electric current so that thermal runaway occurring due to overcharge current is prevented. A benzene compound, into which a predetermined substitutional group has been induced, is added to the non-aqueous electrolyte of the non-aqueous electrolyte secondary battery.
CELL CULTURE SUBSTRATE CONTAINING FLUORINE-CONTAINING POLYMER ON SURFACE
申请人:Nippon Shokubai Co., Ltd.
公开号:EP3135752A1
公开(公告)日:2017-03-01
This invention provides a cell culture substrate comprising on its surface a fluorine-containing polymer that enables three-dimensional tissue culture. The cell culture substrate of the invention has a surface at least a part of which is composed of a resin composition comprising a fluorine-containing polymer having one or more fluorine atoms in a repeating unit and exhibits the oxygen gas permeability of 219 cm3 (STP)/(m2·24h·atm) or higher. Three-dimensional tissue can be formed via cell culture with the use of the cell culture substrate of the invention.