نتایج جستجو برای: polyvinyl difluoride

تعداد نتایج: 8612  

Journal: :Journal of Fluorine Chemistry 1991

Journal: :Oriental journal of chemistry 2022

In one-dimensional Lie algebraic framework, we calculated the vibrational frequencies of oxygen difluoride (F2O) molecule in fundamental mode, higher overtones and their combinational bands.

2010
Bruno Linclau Leo Leung Jean Nonnenmacher Graham Tizzard

A large-scale synthesis of meso-2,3-difluoro-1,4-butanediol in 5 steps from (Z)-but-2-enediol is described. Crystallographic analysis of the diol and the corresponding benzyl ether reveals an anti conformation of the vicinal difluoride moiety. Monosilylation of the diol is high-yielding but all attempts to achieve chain extension through addition of alkyl Grignard and acetylide nucleophiles fai...

2012
Anand Bala Subramaniam Guido Guidotti Vinothan N. Manoharan Howard A. Stone

Lipid membrane fluorescent probes: 23-(dipyrrometheneboron difluoride)-24-norcholesterol (BODIPY-Chol), GM1 Ganglioside (Brain, Ovine-Ammonium Salt), and 1,2-dioleoyl-sn-glycero-3-phosphoethanolamine-N(lissamine rhodamine B sulfonyl) (ammonium salt) (Rh-DPPE) were purchased from Avanti Polar Lipids. Cholera Toxin Subunit B (CTXB) conjugated with Alexa488 and Alexa647 (A488CTXB, A647-CTXB) and D...

Journal: :The Journal of organic chemistry 2010
Steven R Inglis Esther C Y Woon Amber L Thompson Christopher J Schofield

Methods for the deprotection of pinanediol and pinacol esters of various boronic acids via fluoroborane intermediates were evaluated. Treatment of the boronate esters with potassium hydrogen difluoride normally gives trifluoroborate salts; in the case of alpha-amido alkyl or o-amido phenyl boronate esters, aqueous workup gives difluoroboranes. Procedures for transformation of both trifluorobora...

Journal: :Journal of Textiles, Coloration and Polymer Science 2020

Journal: :Journal of Polymer Science Part A-1: Polymer Chemistry 1971

2015
A. Filimon R. M. Albu E. Avram

The rheological response of blends obtained from quaternized polysulfone and polyvinyl alcohol in N-methyl-2pyrrolidone as against structural peculiarity of polymers from the blend, composition of polymer mixtures, as well as the types of interactions were investigated. Results show that the variation of polyvinyl alcohol composition in the studied system determines changes of the rheological p...

Journal: :Physical chemistry chemical physics : PCCP 2016
Christopher O Obondi Gary N Lim Paul A Karr Vladimir N Nesterov Francis D'Souza

A new series of multi-modular donor-acceptor systems capable of exhibiting photoinduced charge separation have been designed, synthesized and characterized using various techniques. In this series, the electron donor was a BF2-chelated dipyrromethene (BODIPY) appended with two styryl linkers carrying two electron rich triphenylamine or phenothiazine entities. Fulleropyrrolidine linked at the me...

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