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Journal articles
pH-Induced transformation of ligated Au-25 to brighter Au-23 nanoclusters
M. Waszkielewicz
1
J. Olesiak-Banska
1
Clothilde Comby-Zerbino
2
Franck Bertorelle
2
Xavier Dagany
2
A. K. Bansal
3
M. T. Sajjad
3
I. D. W. Samuel
3
Z. Sanader
4
M. Rozycka
1
M. Wojtas
1
K. Matczyszyn
1
V. Bonacic-Koutecky
4
Rodolphe Antoine
2
A. Ozyhar
4, 5
M. Samoc
1
M. Waszkielewicz 1
Author
J. Olesiak-Banska 1
Author
Clothilde Comby-Zerbino 2
Author
Franck Bertorelle 2
Author
V. Bonacic-Koutecky 4
Author
Rodolphe Antoine 2
Author IdHAL : rodolphe-antoine
A. Ozyhar 4, 5
Author
M. Samoc 1
Author
1
Wroclaw University of Science and Technology (27 Wybrzeże Wyspiańskiego St
50-370 Wrocław - Poland)
2
ILM - Institut Lumière Matière [Villeurbanne] (UMR5306 CNRS Université Claude Bernard Lyon 1 Domaine Scientifique de La Doua Bâtiment Kastler, 10 rue Ada Byron 69622 Villeurbanne CEDEX, Franc - France)
- UCBL - Université Claude Bernard Lyon 1 (43, boulevard du 11 novembre 1918, 69622 Villeurbanne cedex - France)
- Université de Lyon (92 rue Pasteur - CS 30122, 69361 Lyon Cedex 07 - France)
- CNRS - Centre National de la Recherche Scientifique : UMR5306 (France)
3
SUPA School of Physics and Astronomy [University of St Andrews] (North Haugh, St Andrews KY16 9SS, United Kingdom - United Kingdom)
- University of St Andrews [Scotland] (St Andrews KY16 9AJ, Fife, Scotland, UK - United Kingdom)
- SUPA - Scottish Universities Physics Alliance (University of Glasgow, Kelvin Building, SUPA Room 234, University Avenue, Glasgow G12 8QQ - United Kingdom)
4
University of Split (Croatia)
5
Humboldt-Universität zu Berlin (Unter den Linden 6 - 10099 Berlin - Germany)
Abstract : Thiolate-protected gold nanoclusters have recently attracted considerable attention due to their size-dependent luminescence characterized by a long lifetime and large Stokes shift. However, the optimization of nanocluster properties such as the luminescence quantum yield is still a challenge. We report here the transformation of Au25Capt18 (Capt labels captopril) nanoclusters occurring at low pH and yielding a product with a much increased luminescence quantum yield which we have identified as Au23Capt17. We applied a simple method of treatment with HCl to accomplish this transformation and we characterized the absorption and emission of the newly created ligated nanoclusters as well as their morphology. Based on DFT calculations we show which Au nanocluster size transformations can lead to highly luminescent species such as Au23Capt17.
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Journal articles
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https://hal-univ-lyon1.archives-ouvertes.fr/hal-02289862
Contributor : Marie-Gabrielle Chautard <>
Submitted on : Tuesday, September 17, 2019 - 10:58:53 AM
Last modification on : Tuesday, October 27, 2020 - 2:35:49 PM
Contributor : Marie-Gabrielle Chautard <>
Submitted on : Tuesday, September 17, 2019 - 10:58:53 AM
Last modification on : Tuesday, October 27, 2020 - 2:35:49 PM
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- HAL Id : hal-02289862, version 1
- DOI : 10.1039/c8nr00660a
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UNIV-LYON1 | ILM | CNRS | UDL
Citation
M. Waszkielewicz, J. Olesiak-Banska, Clothilde Comby-Zerbino, Franck Bertorelle, Xavier Dagany, et al.. pH-Induced transformation of ligated Au-25 to brighter Au-23 nanoclusters. Nanoscale, Royal Society of Chemistry, 2018, 10 (24), pp.11335-11341. ⟨10.1039/c8nr00660a⟩. ⟨hal-02289862⟩
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