Inorganic mesoporous material and process for the preparation thereof having a chiral nematic structure

摘要

The invention has been described compositions and methods for producing the mesoporous silica material with chiral organization. In that process, causing the material of the inorganic solid is reacted in the presence of nanocrystalline cellulose (NCC), a polymerizable inorganic monomers, cellulose nano-crystals are embedded in a chiral nematic organization. NCC is able to produce a stable porous structure that holds the tissue NCC chiral template is removed. A new material, can be obtained as free-standing films iridescent with a large surface area. I can be under the control of the reaction conditions, the color of the film is varied over the entire visible spectrum. These are materials of the first long-range combined with chiral ordering leading to photonic properties, mesoporous. Stationary phase for chromatography reinforcement of lightweight, low-κ dielectric materials, tuned reflective filter, adsorbent, achiral materials or chiral catalyst, (an example of a possible application of this material, asymmetric synthesis for conversion), and it is as a template for producing chiral nematic structure is preferably, for example (the metal) of porous carbon or porous new other porous materials.