Journal
MOLECULAR SYSTEMS DESIGN & ENGINEERING
Volume 7, Issue 10, Pages 1318-1326Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/d2me00107a
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Funding
- Ministry Of Science, Research and the Arts Baden-Wurttemberg
- Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) [358283783 - SFB 1333/2 2022]
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The influence of confinement in the nanometer scale has gained attention in the scientific community, particularly in the areas of diffusion, adsorption, phase transition, and catalytic conversion. This study presents a simple method to prepare mesoporous silica materials with narrow pore size distributions and a wide range of pore diameters. The use of tailor-made block copolymers allows for a predictive synthesis, and the application of true liquid crystal templating process guarantees exceptionally narrow pore size distributions, even for ultra-large mesopores.
The influence of confinement in the nanometer scale on diffusion, adsorption, phase transition and catalytic conversion has recently gained increasing scientific attention. To study and ultimately understand its influence, mesoporous materials with narrow pore size distributions and a large range of different pore diameters are key. A simple method is presented to prepare ordered mesoporous silica materials with rationally addressable pore diameters between 4.5 and 21.5 nm, by using tailor-made block copolymers composed of poly(propylene oxide) (PPO) and poly(ethylene oxide) (PEO) with the generic structure PPOn/2-PEOm-PPOn/2. A linear correlation between the number of propylene oxide units and the achieved pore diameter allows for a predictive synthesis, while the applied true liquid crystal templating process guarantees exceptionally narrow pore size distributions, even for ultra-large mesopores.
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