TiO2/Si Core/Shell Nanowires Array as Molecule Carriers

This paper presents a novel material composed of titanium oxide/silicon core/shell (TiO2@Si) nanowires array for biomarcomolecules controllable release under UV light. The TiO2/Si nanostructures were fabricated via layer-by- layer method. DNA and proteins can be covalently immobilized on the TiO2@Si surface by (aminopropyl)triethoxysilane (APTES) and glutaraldehyde, then will be released through UV illumination in 10 minutes. Results show that the composite material can be easily fabricated by chemical methods repeatedly, and is promising for gene therapy in the near future.