Surface states of titanium dioxide nanoparticles modified with enediol ligands

Linda De La Garza, Zoran V. Saponjic, Nada M. Dimitrijevic, Tijana Rajh, Marion C. Thurnauer

Research output: Chapter in Book/Report/Conference proceedingConference contribution


Spectroelectrochemical detection of surface states of titanium dioxide nanoparticles has been achieved by selective modification with enediol ligands of the surface of the nanoparticles assembled into films. Dopamine and 3,4-dihydroxyphenylacetic acid are ortho-substituted hydroxylated ligands that have shown selectivity for the surface defects of TiO 2 nanoparticles. Bidentate coordination of surface titanium atoms by the ligands changes the effective band-gap energy of TiO 2, shifting the absorption band from the ultraviolet to the visible and infrared range. The repairing of undercoordinated nanoparticle surface sites by enediol ligands is demonstrated in films assembled from modified nanoparticles.

Original languageEnglish (US)
Title of host publicationElectron Transfer in Nanomaterials - Proceedings of the International Symposium
Number of pages7
StatePublished - 2006
Externally publishedYes
Event205th Electrochemical Society Meeting - San Antonio, TX, United States
Duration: May 9 2004May 14 2004

Publication series

NameProceedings - Electrochemical Society
VolumePV 2004-22


Other205th Electrochemical Society Meeting
Country/TerritoryUnited States
CitySan Antonio, TX

ASJC Scopus subject areas

  • Engineering(all)


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