1. Nanovalve activation by surface-attached photoacids
- Author
-
Tania M. Guardado-Alvarez, Jeffrey I. Zink, and Melissa M. Russell
- Subjects
Aniline Compounds ,Light ,Surface Properties ,Silicon dioxide ,Nanoparticle ,Protonation ,Photochemistry ,Article ,Catalysis ,chemistry.chemical_compound ,Aniline ,Materials Chemistry ,Molecule ,chemistry.chemical_classification ,Cyclodextrins ,Pyrenes ,Cyclodextrin ,Metals and Alloys ,General Chemistry ,Hydrogen-Ion Concentration ,Mesoporous silica ,Silicon Dioxide ,Surfaces, Coatings and Films ,Electronic, Optical and Magnetic Materials ,chemistry ,Ceramics and Composites ,Nanoparticles ,Sulfonic Acids ,Acids ,Porosity - Abstract
Proton transfer caused by excitation of a photoacid attached to the surface of a mesoporous silica nanoparticle activates a nanovalve and causes release of trapped molecules. The protonation of an aniline- based stalk releases a noncovalently bound cyclodextrin molecule that blocked a pore. The results show that pH-responsive molecular delivery systems can be externally controlled using light.
- Published
- 2014