In situ synthesis of porous silica nanoparticles for covalent immobilization of enzymes.

A simple method is used to covalently encapsulate enzymes in silica nanoparticles. The encapsulation is highlighted by the high enzyme loading and porous channels that provide efficient diffusion for small substrate and product molecules while preventing protease degradation.

Encapsulated enhanced green fluorescence protein in silica nanoparticle for cellular imaging.

The enhanced green fluorescence protein (EGFP) is efficiently encapsulated in silica nanoparticle by multiple covalent bonds. The silica encapsulation greatly increases EGFP's fluorescence intensity and stabilities against protease, denaturant and heat, making it a potential fluorescence probe for cellular imaging.