分子印迹溶胶-凝胶材料的制备及应用

分子印迹技术是制备对特定分子具有选择性识别的聚合物的技术。分子印迹技术与溶胶-凝胶过程相结合，可设计多孔无机主体，增强分子识别能力，并具有极好的热稳定性和水解稳定性。改变溶胶-凝胶过程的条件，可制备具有最佳孔隙率和表面积，并用于分离复杂的混合物、选择性吸附富集模板分子(或目标分子)、催化、微合成器应用的分子印迹溶胶-凝胶材料。综述了溶胶．凝胶技术和分子印迹技术的特点，分子印迹溶胶-凝胶技术和分子印迹溶胶．凝胶材料的概念、基本原理、制备方法及应用。

Preparation and Application of Molecularly Imprinted Sol-Gel Materials

Molecular Imprinting technique (MIT) involves the preparation of a polymer with selective recognition sites for specific molecule. The sol-gel technology provides a versatile method to prepare the size, shape, charge selective inorganic materials, and inorganic-organic hybrid materials with specific functions and affinity. The molecularly imprinted sol-gel materials with controlled porosity and surface area have been prepared by varying the sol-gel processing conditions for the application of separation, catalysis, micro- synthetic receptors, the selective adsorption and preconcentration of the template molecules (or target molecules). In this paper, the conceptions, principles, characterizations of molecular imprinting sol-gel technology and molecularly imprinted sol-gel materials and some new methods for preparing molecularly imprinted materials based on sol-gel processes were reviewed.