Silylated quaternary ammonium salts – ionic liquids with hydrophobic cations
作者:Matjaž Koželj、Abdelbast Guerfi、Karim Zaghib
DOI:10.1039/c4ta02675f
日期:——
class of ionicliquids was obtained by a combination of bis(perfluoroalkylsulfonyl)amide anions and O-silylated choline like cations. The protection of the hydrophilic hydroxyl group of hydroxyalkyl substituted quaternaryammoniumsalts with a trialkylsilyl group changes cations' properties from hydrophilic to hydrophobic; both constituents (cations and anions) of resulting ionicliquids have a hydrophobic
通过双(全氟烷基磺酰基)酰胺阴离子和O-甲硅烷基化的胆碱样阳离子的组合获得另一类离子液体。具有三烷基甲硅烷基的羟烷基取代的季铵盐的亲水羟基的保护将阳离子的性质从亲水变为疏水。所得离子液体的两种成分(阳离子和阴离子)均具有疏水性。研究了它们的基本物理和化学性质。离子液体的中等粘度和电导率遵循它们对温度的依赖性的Vogel-Tammann-Fulcher模型。所有离子液体均显示出与CV测量所预期的相似的电化学稳定性。相对于Li / Li ,大多数化合物的阴极稳定性低于0 V+,并且与Li / Li +相比,阳极分解通常会在超过5 V的条件下开始。这些性质表明,这些离子液体具有制备高压锂电池电解液的潜力。
IONIC COMPOUNDS HAVING A SILYLOXY GROUP
申请人:HYDRO-QUÉBEC
公开号:US20150093655A1
公开(公告)日:2015-04-02
There is provided an ionic compound having attached thereto a silyloxy group. There is also provided methods of making this ionic compound as well as electrolytes, electrochemical cells and capacitors comprising this ionic compound.
dialkylaminosilanes a number of newrearrangements was observed. When acted upon by ketene, dialkylaminosilanes, depending on the conditions applied, produce either amides of β-siloxyvinylacetic acid (I) (route “a”, scheme A) or amides of silylated aceticacid (II) (routes “b”, “c”). In both cases an intermediate α-siloxyvinyldialkylamine (III) was isolated which may be rearranged to give amide (II).
Sterically Encumbered Tris(trialkylsilyl) Phosphine Precursors for Quantum Dot Synthesis
作者:Hashini B. Chandrasiri、Eun Byoel Kim、Preston T. Snee
DOI:10.1021/acs.inorgchem.0c02440
日期:2020.11.2
improved, but not to the levels realized in CdSe QDs. Regardless, these reagents have other positive attributes; they are less pyrophoric and can be applied toward the synthesis of II–V semiconductors and organophosphorus compounds. Concerning safe practices, we demonstrate that ammonium bifluoride is an effectivereplacement for highly toxic HF for the post-treatment of III–V semiconductor quantum