Magnetically Guided Titania Nanotubes for Site-Selective Photocatalysis and Drug Release

Quick release: The spatial and temporal delivery of active molecules (dyes or drugs) can be precisely controlled by the photocatalytic activity of TiO2 nanotubes (see picture). The cleavage of the link between the active molecule and the nanotubes, which are filled with magnetic Fe3O4 nanoparticles,...

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Veröffentlicht in:	Angewandte Chemie (International ed.) 2009-01, Vol.48 (5), p.969-972
Hauptverfasser:	Shrestha, Nabeen K, Macak, Jan M, Schmidt-Stein, Felix, Hahn, Robert, Mierke, Claudia T, Fabry, Ben, Schmuki, Patrik
Format:	Artikel
Sprache:	eng
Schlagworte:	Catalysis drug delivery Ferrosoferric Oxide - chemistry Ferrosoferric Oxide - radiation effects magnetic properties Magnetics Nanoparticles - chemistry Nanoparticles - radiation effects nanostructures Nanotubes - chemistry Nanotubes - radiation effects Particle Size Pharmaceutical Preparations - chemistry Pharmaceutical Preparations - radiation effects photocatalysis Photochemistry photooxidation Surface Properties Titanium - chemistry Titanium - radiation effects Ultraviolet Rays
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Beschreibung
Zusammenfassung:	Quick release: The spatial and temporal delivery of active molecules (dyes or drugs) can be precisely controlled by the photocatalytic activity of TiO2 nanotubes (see picture). The cleavage of the link between the active molecule and the nanotubes, which are filled with magnetic Fe3O4 nanoparticles, occurs by photoinduced chain scission under UV light; the load can be released before photodegradation by action of photogenerated radicals can occur.
ISSN:	1433-7851 1521-3773
DOI:	10.1002/anie.200804429