Key Lab of Organic Optoelectronic and Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing 100084, People's Republic of China.
Langmuir. 2011 Jul 5;27(13):8451-7. doi: 10.1021/la201055b. Epub 2011 Jun 13.
On the basis of the combination of colloidal and mesophase templating, as well as molecular imprinting, a general and effective approach for the preparation of hierarchically structured trimodal porous silica films was developed. With this new methodology, controlled formation of well-defined pore structures not only on macro- and mesoscale but also on microscale can be achieved, affording a new class of hierarchical porous materials with molecular recognition capability. As a demonstration, TNT was chosen as template molecule and hierarchically imprinted porous films were successfully fabricated, which show excellent sensing properties in terms of sensitivity, selectivity, stability, and regeneracy. The pore system reported here combines the multiple benefits arising from all length scales of pore size and simultaneously possesses a series of distinct properties such as high pore volume, large surface area, molecular selectivity, and rapid mass transport. Therefore, our described strategy and the resulting pore systems should hold great promise for various applications not only in chemical sensors, but also in catalysis, separation, adsorption, or electrode materials.
基于胶体和介孔模板以及分子印迹的结合，开发了一种通用且有效的方法来制备分级结构的三模态多孔硅膜。通过这种新方法，可以在宏观、介观和微观尺度上实现可控的、明确的孔结构形成，从而提供具有分子识别能力的一类新的分级多孔材料。作为一个演示，选择 TNT 作为模板分子，并成功制备了分级印迹多孔膜，其在灵敏度、选择性、稳定性和可再生性方面表现出优异的传感性能。这里报道的孔系统结合了所有孔径长度尺度带来的多种优势，同时具有一系列独特的性质，如高孔体积、大表面积、分子选择性和快速传质。因此，我们所描述的策略和由此产生的孔系统不仅在化学传感器中，而且在催化、分离、吸附或电极材料中都具有广阔的应用前景。
