Results 31 to 40 of about 55,562 (339)
Small-angle scattering investigation of silica xerogels and sonogels prepared with ionic liquid pyridinium tetrafluoroborate [PDF]
Processing and Application of Ceramics, 2017 Silica matrices were prepared via acid catalysed sol-gel processing augmented with sonocatalysis. As silica precursors, a mixture of tetra-functionalized alkoxide (TMOS) and three-functionalized alkoxide methyl-trimethoxysilane (MTMS) were employed ...
László Almásy +4 more
doaj +1 more source
X-ray reflectivity, diffraction and grazing incidence small angle X-ray scattering as complementary methods in the microstructural study of sol–gel zirconia thin films [PDF]
, 2006 X-ray reflectometry, X-ray diffraction and grazing incidence small angle X-ray scattering have been complementary used to fully characterize zirconia (ZrO2) thin films obtained by the sol–gel route. The films were synthesized on various sapphire (Al2O3),
Babonneau, David +3 more
core +3 more sources
Amino-functionalised metal xanthates
Main Group Metal Chemistry, 2015 The amino-functionalised xanthate NaS2COC2H4 N(Me)C2H4NMe2 (1) was synthesised, and its structure was determined to be a coordination polymer incorporating a six-coordinate metal with S3N2O ligation and in which the ligand delivers κ2-S,S chelate, κ2-S,O
Hill Michael S. +3 more
doaj +1 more source
Molecules, 2013 The nucleophilic character and stability of the carbanions vs. alkoxides derived from 2,2,2-trifluoro-1-(9-anthryl)ethanol and 1-(9-anthryl)ethanol containing X electron-releasing and X electron-acceptor substituents attached to C-10, have been studied ...
Francisco Méndez +2 more
doaj +1 more source
Beilstein Journal of Organic Chemistry, 2012 The fused 2-vinyl or 2-phenyl substituted cyclobutanones 4 undergo stereoselective ring openings by the action of alkoxide ions (t-BuO− or MeO−) to produce novel vicinally disubstituted cycloalkene derivatives 5 and 6 in moderate to high yields. The ring
Xiufang Ji +3 more
doaj +1 more source
Supramolecular catalysis with ethers enabled by dual chalcogen bonding activation
Nature Communications, 2023 The activation of ethers by weak interactions is a long-standing objective in supramolecular catalysis, but yet it remains an underdeveloped topic. The obstacles towards solving this problem are prominent since it is difficult for a weak interaction to ...
Zhiguo Zhao +4 more
doaj +1 more source
Ligand Tuning in Pyridine-Alkoxide Ligated Cp*IrIII Oxidation Catalysts
, 2017 Six novel derivatives of pyridine-alkoxide ligated Cp*IrIII complexes, potent precursors for homogeneous water and C–H oxidation catalysts, have been synthesized, characterized, and analyzed spectroscopically and kinetically for ligand effects. Variation
Emma V. Sackville +2 more
semanticscholar +1 more source
The sol–gel route: A versatile process for up-scaling the fabrication of gas-tight thin electrolyte layers [PDF]
, 2011 Sol–gel routes are often investigated and adapted to prepare, by suitable chemical modifications, submicronic powders and derived materials with controlled morphology, which cannot be obtained by conventional solid state chemistry paths.
Ansart, Florence +5 more
core +4 more sources
CerâmicaTiO2 nanoparticles (NPs) were synthesized by sol-gel methods using two different precursors, titanium tetraisopropoxide and potassium titanium oxalate (KTO).
P. K. Singh +3 more
doaj +1 more source
Molecules, 2013 The crossed and linked histories of tetrapyrrolic macrocycles, interwoven with new research discoveries, suggest that Nature has found in these structures a way to ensure the continuity of life. For diverse applications porphyrins or phthalocyanines must
Miguel A. García-Sánchez +7 more
doaj +1 more source