Dual Enzyme?￠????Triggered Controlled Release on Capped Nanometric Silica Mesoporous Supports

摘要

The development of nanoscopic hybrid materials equipped with "molecular gates" showing the ability of releasing target entrapped guests upon the application of an external trigger has attracted great attention and has been extensively ex- plored during recent years. [1] These nanodevices are composed of two subunits, namely, a suitable support and certain cap- ping entities grafted on the surface of the scaffolding. [2] The support is used as a suitable reservoir in which certain chemi- cals can be stored whereas the molecules grafted in the outer surface act as a "gate" and can control the release of the en trapped molecules at will. Both components are carefully selected and arranged in order to achieve a wide range of required functionalities.