TY - GEN
T1 - Surface restructuring of nanoparticles affects charge separation
AU - Rajh, Tijana
AU - Dimitrijevic, Nada M.
AU - Rozhkova, Elena A.
AU - De La Garza, Linda
PY - 2009
Y1 - 2009
N2 - Semiconductor photocatalysis using nanoparticlate TiO2 has proven to be a promising technology for use in photocatalytic reactions, in the cleanup of water, or as a photoactive material in nanocrystalline solar cells. We have found that reconstructed surface of metal oxide nanoparticles differs form the bulk by the presence of highly reactive under-coordinated surface. This can be viewed as a curse or as an opportunity. The under-coordinated surface metal atoms trap light-induced charges, but also exhibit high affinity for oxygen-containing ligands. As a result of this strong interaction, delocalized bands of metal oxide nanoparticles are electronically coupled to organic linkers, improving their optical properties in the visible region and photovoltaic response due to enhanced charge separation across nanoparticle interface. In the same manner we use photoinduced charge separation in order to control and manipulate processes within living cells.
AB - Semiconductor photocatalysis using nanoparticlate TiO2 has proven to be a promising technology for use in photocatalytic reactions, in the cleanup of water, or as a photoactive material in nanocrystalline solar cells. We have found that reconstructed surface of metal oxide nanoparticles differs form the bulk by the presence of highly reactive under-coordinated surface. This can be viewed as a curse or as an opportunity. The under-coordinated surface metal atoms trap light-induced charges, but also exhibit high affinity for oxygen-containing ligands. As a result of this strong interaction, delocalized bands of metal oxide nanoparticles are electronically coupled to organic linkers, improving their optical properties in the visible region and photovoltaic response due to enhanced charge separation across nanoparticle interface. In the same manner we use photoinduced charge separation in order to control and manipulate processes within living cells.
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M3 - Conference contribution
AN - SCOPUS:78649800326
SN - 9780841200050
T3 - ACS National Meeting Book of Abstracts
BT - American Chemical Society - 238th National Meeting and Exposition, ACS 2009, Abstracts of Scientific Papers
T2 - 238th National Meeting and Exposition of the American Chemical Society, ACS 2009
Y2 - 16 August 2009 through 20 August 2009
ER -