Journal
ADVANCED OPTICAL MATERIALS
Volume 5, Issue 16, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adom.201601000
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Funding
- Science Foundation Ireland [SFI 12/IA/1300]
- Ministry of Education and Science of the Russian Federation [14.B25.31.0002]
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In this work, new chiral and luminescent TiO2 nanomaterials are prepared by a single step nonaqueous synthesis. Using circular dichroism spectroscopy it is shown that TiO2 nanoparticles are optically active with almost identical mirror images of one another in the band-edge region of titanium dioxide. Investigations of the photoluminescence properties reveal a broad shallow trap state emission centered at 440 nm, with a photoluminescence quantum yield of approximate to 3.5%, which is among the highest reported for TiO2. Electron microscopy reveals the TiO2 nanostructures to be dendritic aggregates measuring 30-50 nm in size composed of smaller nanorods of 3-4 nm in diameter.
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