Novel fluorinated dialkylphosphonatocholines: Synthesis, physicochemical properties and antiprotozoal activities against Acanthamoeba spp.
摘要:
The synthesis of four new organophosphorous gemini surfactants is presented. They belong to the class of dialkylphosphonatocholines. Tails are represented with two octyl groups both non or partially fluorinated. The synthesis was performed by reaction of alkylphosphonic acids with choline derivatives in the presence of 2,4,6-triisopropylbenzenesulfonyl chloride. The micellar, surface active, and solubilization properties of new surfactants were studied. Antiprotozoal activities were tested against Acanthamoeba lugdunensis and Acanthamoeba quina. (C) 2014 Elsevier B.V. All rights reserved.
Novel fluorinated dialkylphosphonatocholines: Synthesis, physicochemical properties and antiprotozoal activities against Acanthamoeba spp.
摘要:
The synthesis of four new organophosphorous gemini surfactants is presented. They belong to the class of dialkylphosphonatocholines. Tails are represented with two octyl groups both non or partially fluorinated. The synthesis was performed by reaction of alkylphosphonic acids with choline derivatives in the presence of 2,4,6-triisopropylbenzenesulfonyl chloride. The micellar, surface active, and solubilization properties of new surfactants were studied. Antiprotozoal activities were tested against Acanthamoeba lugdunensis and Acanthamoeba quina. (C) 2014 Elsevier B.V. All rights reserved.
COATED METAL OXIDE NANOPARTICLES AND METHODS FOR PRODUCING SAME
申请人:Perry Joseph
公开号:US20100027192A1
公开(公告)日:2010-02-04
Disclosed are coated metal oxide nanoparticles comprising a metal oxide nanoparticle having a surface; and ligands attached to the metal oxide nanoparticle surface. Also disclosed are phosphonic acid compounds comprising the structure Gn-R-Xn, wherein G is a terminal group; wherein R is a bridging group; wherein X is a phosphonic acid group; and wherein each n is, independently, 1, 2, or 3. Also disclosed are methods for preparing and using coated metal oxide nanoparticles. Also disclosed are nanocomposite compositions comprising a polymer; and a coated metal oxide nanoparticle dispersed within the polymer. Also disclosed are articles, films, and capacitors comprising a coated metal oxide nanoparticle or a nanocomposite composition. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present invention.
Efficient Syntheses of Fluorous Primary Phosphines that Do Not Require PH<sub>3</sub>
作者:J. A. Gladysz、Charlotte Emnet
DOI:10.1055/s-2005-861815
日期:——
Arbuzov reactions of the fluorous primary iodides Rfn(CH2)mI [Rfn = CF3(CF2)n-1; n/m = 6/2, 8/2, 8/3, 10/2] and P(OEt)3 (excess, 160 °C) give the fluorous phosphonates Rfn(CH2)mP(O)(OEt)2 (56-59%), which are reduced with LiAlH4 to the title compounds Rfn(CH2)mPH2 (62-78%). Fluorophilicities (CF3C6F11/toluene partition coefficients) increase with the length of the Rfn moiety, decrease with the length of the (CH2)m moiety, and decrease in the functional group sequence Rfn(CH2)mNH2 > Rfn(CH2)mPH2 > Rfn(CH2)mP(O)(OEt)2.
Nickel(0)-Catalyzed Fluoroalkylation of Alkenes, Alkynes, and Aromatics with Perfluoroalkyl Chlorides
作者:Xiao-Ting Huang、Qing-Yun Chen
DOI:10.1021/jo010178j
日期:2001.6.1
Treatment of perfluoroalkyl chlorides (R(F)Cl) with alkenes, alkynes, or aromatics in the presence of 0.1 equiv of nickel dichloride, 1.5 equiv of zinc powder, and 0.4 equiv of triphenylphosphine in DMF at 95-100 degrees C for 6-8 h give the corresponding perfluoroalkylated products in good yields. A single electron-transfer mechanism is suggested.
PRINTABLE THIN-FILM TRANSISTORS WITH HIGH DIELECTRIC CONSTANT GATE INSULATORS AND METHODS FOR PRODUCING SAME
申请人:Kippelen Bernard
公开号:US20100051917A1
公开(公告)日:2010-03-04
Disclosed are embodiments of organic thin-film transistors (OTFT) with a gate insulator layer comprised of nanocomposites incorporating metal oxide nanoparticles coated by organic ligands and methods of fabricating such OTFTs. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present invention.
Printable thin-film transistors with high dielectric constant gate insulators and methods for producing same
申请人:Kippelen Bernard
公开号:US08405069B2
公开(公告)日:2013-03-26
Disclosed are embodiments of organic thin-film transistors (OTFT) with a gate insulator layer comprised of nanocomposites incorporating metal oxide nanoparticles coated by organic ligands and methods of fabricating such OTFTs. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present invention.