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Adsorption and charge-transfer study of bi-isonicotinic acid on in situ-grown anatase TiO2 nanoparticles

Schnadt, J LU orcid ; Henningsson, A ; Andersson, Martin LU ; Karlsson, P G ; Uvdal, Per LU ; Siegbahn, H ; Bruhwiler, P A and Sandell, A (2004) In The Journal of Physical Chemistry Part B 108(10). p.3114-3122
Abstract
Bi-isonicotinic acid (2,2'-bipyridine-4,4'-dicarboxylic acid) is an important ligand in the chemistry of organometallic devices. Here, the adsorption of a monolayer of the molecule on in situ-grown anatase TiO2 nanoparticles has been investigated by means of X-ray photoemission spectroscopy and X-ray absorption spectroscopy. The bonding geometry is determined to be 2M-bidentate. Furthermore, resonant core spectroscopies have been used to study the excited-state-dependent electron transfer from the core-excited molecule to the substrate. For an excitation to the lowest unoccupied orbital, the excited electron is localized on the molecule because of a core-excitonic effect. Excitation to the two following unoccupied orbitals leads to a... (More)
Bi-isonicotinic acid (2,2'-bipyridine-4,4'-dicarboxylic acid) is an important ligand in the chemistry of organometallic devices. Here, the adsorption of a monolayer of the molecule on in situ-grown anatase TiO2 nanoparticles has been investigated by means of X-ray photoemission spectroscopy and X-ray absorption spectroscopy. The bonding geometry is determined to be 2M-bidentate. Furthermore, resonant core spectroscopies have been used to study the excited-state-dependent electron transfer from the core-excited molecule to the substrate. For an excitation to the lowest unoccupied orbital, the excited electron is localized on the molecule because of a core-excitonic effect. Excitation to the two following unoccupied orbitals leads to a charge transfer on a low-femtosecond time scale. This study shows that there is no essential difference in charge-transfer characteristics, compared to the case of adsorption on the rutile (110) surface, for states degenerate with the conduction band. (Less)
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organization
publishing date
type
Contribution to journal
publication status
published
subject
in
The Journal of Physical Chemistry Part B
volume
108
issue
10
pages
3114 - 3122
publisher
The American Chemical Society (ACS)
external identifiers
  • wos:000220093900002
  • scopus:1842532310
ISSN
1520-5207
DOI
10.1021/jp0344491
language
English
LU publication?
yes
additional info
The information about affiliations in this record was updated in December 2015. The record was previously connected to the following departments: Chemical Physics (S) (011001060)
id
bd014cdf-0357-4fb7-ac0c-cd212bc0de31 (old id 139081)
date added to LUP
2016-04-01 15:54:47
date last changed
2022-02-23 02:16:49
@article{bd014cdf-0357-4fb7-ac0c-cd212bc0de31,
  abstract     = {{Bi-isonicotinic acid (2,2'-bipyridine-4,4'-dicarboxylic acid) is an important ligand in the chemistry of organometallic devices. Here, the adsorption of a monolayer of the molecule on in situ-grown anatase TiO2 nanoparticles has been investigated by means of X-ray photoemission spectroscopy and X-ray absorption spectroscopy. The bonding geometry is determined to be 2M-bidentate. Furthermore, resonant core spectroscopies have been used to study the excited-state-dependent electron transfer from the core-excited molecule to the substrate. For an excitation to the lowest unoccupied orbital, the excited electron is localized on the molecule because of a core-excitonic effect. Excitation to the two following unoccupied orbitals leads to a charge transfer on a low-femtosecond time scale. This study shows that there is no essential difference in charge-transfer characteristics, compared to the case of adsorption on the rutile (110) surface, for states degenerate with the conduction band.}},
  author       = {{Schnadt, J and Henningsson, A and Andersson, Martin and Karlsson, P G and Uvdal, Per and Siegbahn, H and Bruhwiler, P A and Sandell, A}},
  issn         = {{1520-5207}},
  language     = {{eng}},
  number       = {{10}},
  pages        = {{3114--3122}},
  publisher    = {{The American Chemical Society (ACS)}},
  series       = {{The Journal of Physical Chemistry Part B}},
  title        = {{Adsorption and charge-transfer study of bi-isonicotinic acid on in situ-grown anatase TiO2 nanoparticles}},
  url          = {{http://dx.doi.org/10.1021/jp0344491}},
  doi          = {{10.1021/jp0344491}},
  volume       = {{108}},
  year         = {{2004}},
}