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Magnetically Guided Titania Nanotubes for Site‐Selective Photocatalysis and Drug Release
Author(s) -
Shrestha Nabeen K.,
Macak Jan M.,
SchmidtStein Felix,
Hahn Robert,
Mierke Claudia T.,
Fabry Ben,
Schmuki Patrik
Publication year - 2009
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.200804429
Subject(s) - photocatalysis , photodegradation , molecule , bond cleavage , radical , nanotechnology , drug delivery , photochemistry , chemistry , nanoparticle , materials science , catalysis , organic chemistry
Quick release : The spatial and temporal delivery of active molecules (dyes or drugs) can be precisely controlled by the photocatalytic activity of TiO 2 nanotubes (see picture). The cleavage of the link between the active molecule and the nanotubes, which are filled with magnetic Fe 3 O 4 nanoparticles, occurs by photoinduced chain scission under UV light; the load can be released before photodegradation by action of photogenerated radicals can occur.