Surface modification of nanocrystalline TiO2 particles (45 ) with bidentate benzene derivatives (catechol, pyrogallol, and gallic acid) was found to alter optical properties of nanoparticles. The formation of the inner-sphere charge-transfer complexes results in a red shift of the semiconductor absorption compared to unmodified nanocrystallites. The binding structures were investigated by using FTIR spectroscopy. The investigated ligands have the optimal geometry for chelating surface Ti atoms, resulting in ring coordination complexes (catecholate type of binuclear bidentate binding-bridging) thus restoring in six-coordinated octahedral geometry of surface Ti atoms. From the Benesi-Hildebrand plot, the stability constants at pH 2 of the order 10(3) M-1 have been determined.
TY - JOUR
AU - Janković, Ivana A.
AU - Šaponjić, Zoran
AU - Džunuzović, Enis
AU - Nedeljković, Jovan
PY - 2010
UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1609
AB - Surface modification of nanocrystalline TiO2 particles (45 ) with bidentate benzene derivatives (catechol, pyrogallol, and gallic acid) was found to alter optical properties of nanoparticles. The formation of the inner-sphere charge-transfer complexes results in a red shift of the semiconductor absorption compared to unmodified nanocrystallites. The binding structures were investigated by using FTIR spectroscopy. The investigated ligands have the optimal geometry for chelating surface Ti atoms, resulting in ring coordination complexes (catecholate type of binuclear bidentate binding-bridging) thus restoring in six-coordinated octahedral geometry of surface Ti atoms. From the Benesi-Hildebrand plot, the stability constants at pH 2 of the order 10(3) M-1 have been determined.
PB - Springer, New York
T2 - Nanoscale Research Letters
T1 - New Hybrid Properties of TiO2 Nanoparticles Surface Modified With Catecholate Type Ligands
EP - 88
IS - 1
SP - 81
VL - 5
DO - 10.1007/s11671-009-9447-y
ER -
@article{
author = "Janković, Ivana A. and Šaponjić, Zoran and Džunuzović, Enis and Nedeljković, Jovan",
year = "2010",
abstract = "Surface modification of nanocrystalline TiO2 particles (45 ) with bidentate benzene derivatives (catechol, pyrogallol, and gallic acid) was found to alter optical properties of nanoparticles. The formation of the inner-sphere charge-transfer complexes results in a red shift of the semiconductor absorption compared to unmodified nanocrystallites. The binding structures were investigated by using FTIR spectroscopy. The investigated ligands have the optimal geometry for chelating surface Ti atoms, resulting in ring coordination complexes (catecholate type of binuclear bidentate binding-bridging) thus restoring in six-coordinated octahedral geometry of surface Ti atoms. From the Benesi-Hildebrand plot, the stability constants at pH 2 of the order 10(3) M-1 have been determined.",
publisher = "Springer, New York",
journal = "Nanoscale Research Letters",
title = "New Hybrid Properties of TiO2 Nanoparticles Surface Modified With Catecholate Type Ligands",
pages = "88-81",
number = "1",
volume = "5",
doi = "10.1007/s11671-009-9447-y"
}
Janković, I. A., Šaponjić, Z., Džunuzović, E.,& Nedeljković, J.. (2010). New Hybrid Properties of TiO2 Nanoparticles Surface Modified With Catecholate Type Ligands. in Nanoscale Research Letters
Springer, New York., 5(1), 81-88.
https://doi.org/10.1007/s11671-009-9447-y
Janković IA, Šaponjić Z, Džunuzović E, Nedeljković J. New Hybrid Properties of TiO2 Nanoparticles Surface Modified With Catecholate Type Ligands. in Nanoscale Research Letters. 2010;5(1):81-88.
doi:10.1007/s11671-009-9447-y .
Janković, Ivana A., Šaponjić, Zoran, Džunuzović, Enis, Nedeljković, Jovan, "New Hybrid Properties of TiO2 Nanoparticles Surface Modified With Catecholate Type Ligands" in Nanoscale Research Letters, 5, no. 1 (2010):81-88,
https://doi.org/10.1007/s11671-009-9447-y . .
