Change search
ReferencesLink to record
Permanent link

Direct link
Synthesis of chiral TiO2 nanofibre with electron transition-based optical activity
Show others and affiliations
2012 (English)In: Nature Communications, ISSN 2041-1723, Vol. 3, 1215- p.Article in journal (Refereed) Published
Abstract [en]

The optical chirality induced at the absorption bands due to electronic exciton coupling of the transition dipole moments between chromophores in close proximity is ubiquitous in helical organic materials. However, inorganic materials with optical activity resulting from electronic transitions have not been explored. Here we report the synthesis of chiral TiO2 fibres via transcription of the helical structure of amino acid-derived amphiphile fibres through coordination bonding interactions between the organics and the TiO2 source. Upon calcination, the as-prepared amorphous TiO2 double-helical fibres with a pitch length of ~100 nm were converted to double-helical crystalline fibres with stacks of anatase nanocrystals in an epitaxial helical relationship. Both the amorphous and anatase crystalline helical TiO2 fibres exhibited optical response to circularly polarized light at the absorption edge around ~350 nm. This was attributed to the semiconductor TiO2-based electronic transitions from the valence band to the conduction band under an asymmetric electric field.

Place, publisher, year, edition, pages
2012. Vol. 3, 1215- p.
Keyword [en]
nanofibre with electron
National Category
Materials Chemistry
Research subject
Materials Chemistry
URN: urn:nbn:se:su:diva-88517DOI: 10.1038/ncomms2215ISI: 000315992100050OAI: diva2:611750
Available from: 2013-03-18 Created: 2013-03-18 Last updated: 2013-04-19Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full text

Search in DiVA

By author/editor
Terasaki, Osamu
By organisation
Department of Materials and Environmental Chemistry (MMK)
In the same journal
Nature Communications
Materials Chemistry

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 24 hits
ReferencesLink to record
Permanent link

Direct link