In this contribution we review on the optical detection of gaseous O2 via photoluminescence (PL) response of titanium dioxide (TiO2) nanoparticles. O2 exposure to TiO2 produces opposite responses in the two stable TiO2 polymorphs (i.e. anatase and rutile). Such a peculiar behavior, which has no known equivalent for other metal oxides, allows in principle to use mixed-phase TiO2 as an unconventional, inorganic and ratiometric optical sensor of O2. Future prospects for biological applications are discussed.
Toward unconventional TiO2-based optodes for oxygen detection
S Lettieri;A Fioravanti;V Gargiulo;
2019
Abstract
In this contribution we review on the optical detection of gaseous O2 via photoluminescence (PL) response of titanium dioxide (TiO2) nanoparticles. O2 exposure to TiO2 produces opposite responses in the two stable TiO2 polymorphs (i.e. anatase and rutile). Such a peculiar behavior, which has no known equivalent for other metal oxides, allows in principle to use mixed-phase TiO2 as an unconventional, inorganic and ratiometric optical sensor of O2. Future prospects for biological applications are discussed.File in questo prodotto:
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