Modification of the Size of Supported Clusters by Coadsorption of an Organic Compound: Gold and l-Cysteine on Rutile TiO(2)(110).
Ataman, Evren LU ; Isvoranu, Cristina LU ; Knudsen, Jan LU ; Schulte, Karina LU ; Andersen, Jesper N LU and Schnadt, Joachim LU
(2011)
In Langmuir
27(18).
p.11466-11474
- Abstract
- Using X-ray photoelectron spectroscopy we studied the coadsorption of the amino acid l-cysteine and gold on a rutile TiO(2)(110) surface under ultrahigh vacuum conditions. Irrespective of the deposition order, i.e., irrespective of whether l-cysteine or gold is deposited first, the primary interaction between l-cysteine and the gold clusters formed at the surface takes place through the deprotonated thiol group of the molecule. The deposition order, however, has a profound influence on the size of the gold clusters as well as their location on the surface. If l-cysteine is deposited first the clusters are smaller by a factor two to three compared to gold deposited onto the pristine TiO(2)(110) surface and then covered by l-cysteine.... (More)
- Using X-ray photoelectron spectroscopy we studied the coadsorption of the amino acid l-cysteine and gold on a rutile TiO(2)(110) surface under ultrahigh vacuum conditions. Irrespective of the deposition order, i.e., irrespective of whether l-cysteine or gold is deposited first, the primary interaction between l-cysteine and the gold clusters formed at the surface takes place through the deprotonated thiol group of the molecule. The deposition order, however, has a profound influence on the size of the gold clusters as well as their location on the surface. If l-cysteine is deposited first the clusters are smaller by a factor two to three compared to gold deposited onto the pristine TiO(2)(110) surface and then covered by l-cysteine. Further, in the former case the clusters cover the molecules and thus form the outermost layer of the sample. We also find that above a minimum gold cluster size the gold cluster/l-cysteine bond is stronger than the l-cysteine/surface bridging oxygen vacancy bond, which, in turn, is stronger than the gold cluster/vacancy bond. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/2151628
- author
- Ataman, Evren
LU
; Isvoranu, Cristina
LU
; Knudsen, Jan
LU
; Schulte, Karina
LU
; Andersen, Jesper N
LU
and Schnadt, Joachim
LU
- organization
- publishing date
- 2011
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Langmuir
- volume
- 27
- issue
- 18
- pages
- 11466 - 11474
- publisher
- The American Chemical Society (ACS)
- external identifiers
-
- wos:000294790500025
- pmid:21806065
- scopus:80052771790
- pmid:21806065
- ISSN
- 0743-7463
- DOI
- 10.1021/la201923y
- language
- English
- LU publication?
- yes
- id
- 7bdc71cd-d62c-4d33-8126-1d4c1d6c7446 (old id 2151628)
- date added to LUP
- 2016-04-01 10:58:34
- date last changed
- 2023-10-26 23:59:56
@article{7bdc71cd-d62c-4d33-8126-1d4c1d6c7446,
abstract = {{Using X-ray photoelectron spectroscopy we studied the coadsorption of the amino acid l-cysteine and gold on a rutile TiO(2)(110) surface under ultrahigh vacuum conditions. Irrespective of the deposition order, i.e., irrespective of whether l-cysteine or gold is deposited first, the primary interaction between l-cysteine and the gold clusters formed at the surface takes place through the deprotonated thiol group of the molecule. The deposition order, however, has a profound influence on the size of the gold clusters as well as their location on the surface. If l-cysteine is deposited first the clusters are smaller by a factor two to three compared to gold deposited onto the pristine TiO(2)(110) surface and then covered by l-cysteine. Further, in the former case the clusters cover the molecules and thus form the outermost layer of the sample. We also find that above a minimum gold cluster size the gold cluster/l-cysteine bond is stronger than the l-cysteine/surface bridging oxygen vacancy bond, which, in turn, is stronger than the gold cluster/vacancy bond.}},
author = {{Ataman, Evren and Isvoranu, Cristina and Knudsen, Jan and Schulte, Karina and Andersen, Jesper N and Schnadt, Joachim}},
issn = {{0743-7463}},
language = {{eng}},
number = {{18}},
pages = {{11466--11474}},
publisher = {{The American Chemical Society (ACS)}},
series = {{Langmuir}},
title = {{Modification of the Size of Supported Clusters by Coadsorption of an Organic Compound: Gold and l-Cysteine on Rutile TiO(2)(110).}},
url = {{https://lup.lub.lu.se/search/files/2278573/2293495.pdf}},
doi = {{10.1021/la201923y}},
volume = {{27}},
year = {{2011}},
}