The role of ether-functionalized ionic liquids in the sol-gel process: Effects on the initial alkoxide hydrolysis steps

被引：13
|
作者：
Donato, Ricardo K. [1 ,2 ]
Lavorgna, Marino [3 ]
Musto, Pellegrino [4 ]
Donato, Katarzyna Z. [1 ,2 ,3 ]
Jager, Alessandro [1 ]
Stepanek, Petr [1 ]
Schrekker, Henri S. [2 ]
Matejka, Libor [1 ]
机构：
[1] Acad Sci Czech Republic, Inst Macromol Chem, CR-16206 Prague 6, Czech Republic
[2] Univ Fed Rio Grande do Sul, Inst Chem, Lab Technol Proc & Catalysis, BR-9500 Porto Alegre, RS, Brazil
[3] Inst Composite & Biomed Mat, I-80055 Portici, NA, Italy
[4] Inst Chem & Technol Polymers, I-80078 Pozzuoli, NA, Italy
来源：
JOURNAL OF COLLOID AND INTERFACE SCIENCE | 2015年 / 447卷
关键词：
Ether-functionalized ionic liquids; Sol-gel silica; Multiple hydrogen-bonds; Dynamic template; Morphology control; Time-resolved kinetics; Hydrolysis control; Imidazolium ring mobility; EPOXY-SILICA NANOCOMPOSITES; FT-IR; WATER; ALCOHOL; ALKOXYSILANES; CONDENSATION; MORPHOLOGY; SOLVENTS; SALTS; ACID;
D O I：
10.1016/j.jcis.2015.01.079
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The ether-functionalized imidazolium ionic liquids (IL) applied in the silica sol-gel process demonstrated a defined coordination potential. These IL display the capacity to control the system organization from the reactions' first moments through a dynamic system-assembling ability, being the sum of ionic and physical interactions, i.e. Coulomb forces, H-bonding and London forces. The initial hydrolysis steps of tetraethyl orthosilicate (TEOS) in the presence of these IL were followed by Fourier transform infrared spectroscopy (FTIR) and dynamic light scattering (DLS), both in time-resolved experiments, in an attempt to correlate the structuring and the bonding dynamics of these systems. (C) 2015 Elsevier Inc. All rights reserved.
引用
收藏
页码：77 / 84
页数：8
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