Density functional study of the TiO2-dopamine complex

Manuel Vega-Arroyo, Pierre R. Lebreton, Tijana Rajh, Peter Zapol, Larry A. Curtiss

Research output: Contribution to journalArticlepeer-review

60 Scopus citations

Abstract

The binding energies and excitation energies of dopamine interacting with TiO2 clusters of different sizes representing an anatase surface are calculated. Results indicate that bidentate adsorption of dopamine on undercoordinated sites containing a TiO double bond is more stable than monodentate or molecular adsorption on the (1 0 1) anatase surface. A large red shift in the absorption spectrum of TiO2-dopamine is calculated, in agreement with experimental studies. We also investigate how the optical properties of TiO2-dopamine are affected by adding carboxyl thymine and subsequent base pairing with adenine.

Original languageEnglish (US)
Pages (from-to)306-311
Number of pages6
JournalChemical Physics Letters
Volume406
Issue number4-6
DOIs
StatePublished - May 2 2005
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

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