Behavior of au nanoparticles under pressure observed by in situ small-angle X-ray scattering

Martín Sánchez, Camino; Sánchez Iglesia, Ana; Barreda Argüeso, José Antonio; Polian, Alain; Liz Marzán, Luis M.; Rodríguez González, Fernando

doi:10.1021/acsnano.2c10643

dc.contributor.author	Martín Sánchez, Camino
dc.contributor.author	Sánchez Iglesia, Ana
dc.contributor.author	Barreda Argüeso, José Antonio
dc.contributor.author	Polian, Alain
dc.contributor.author	Liz Marzán, Luis M.
dc.contributor.author	Rodríguez González, Fernando
dc.contributor.other	Universidad de Cantabria	es_ES
dc.date.accessioned	2023-05-03T17:11:32Z
dc.date.available	2023-05-03T17:11:32Z
dc.date.issued	2023
dc.identifier.issn	1936-0851
dc.identifier.issn	1936-086X
dc.identifier.other	PID2021-127656NB-I00	es_ES
dc.identifier.other	PID2020-117779RB-I00	es_ES
dc.identifier.other	MDM-2017- 0720	es_ES
dc.identifier.uri	https://hdl.handle.net/10902/28699
dc.description.abstract	The mechanical properties and stability of metal nanoparticle colloids under high-pressure conditions are investigated by means of optical extinction spectroscopy and small-angle X-ray scattering (SAXS), for colloidal dispersions of gold nanorods and gold nanospheres. SAXS allows us to follow in situ the structural evolution of the nanoparticles induced by pressure, regarding both nanoparticle size and shape (form factor) and their aggregation through the interparticle correlation function S(q) (structure factor). The observed behavior changes under hydrostatic and nonhydrostatic conditions are discussed in terms of liquid solidification processes yielding nanoparticle aggregation. We show that pressure-induced diffusion and aggregation of gold nanorods take place after solidification of the solvent. The effect of nanoparticle shape on the aggregation process is additionally discussed.	es_ES
dc.description.sponsorship	We thank Professor Jan Dhont for helpful comments about nanoparticle diffusion in solid ethanol. F.R. acknowledges financial support from Projects PID2021-127656NB-I00 and MALTA-Consolider Team (RED2018-102612-T), and L.M.L.-M. from PID2020-117779RB-I00 and MDM-2017-0720, from the State Research Agency of Spain, Ministry of Science and Innovation. C.M.-S. acknowledges funding from the Spanish Ministry of Universities and the European Union-NextGeneration EU through the Margarita Salas research grant (C21.I4.P1). We acknowledge SOLEIL for the provision of synchrotron radiation facilities, and we would like to thank Dr. Javier Pérez, beamline supervisor, for assistance in using beamline SWING (proposals 20191731 and 20210678). This work benefited from the use of the SasView application, originally developed under NSF award DMR-0520547. SasView contains code developed with funding from the European Union’s Horizon 2020 research and innovation program under the SINE2020 project, grant agreement no. 654000.	es_ES
dc.format.extent	9 p.	es_ES
dc.language.iso	eng	es_ES
dc.publisher	American Chemical Society	es_ES
dc.rights	© 2022 The Authors	es_ES
dc.rights.uri	http://creativecommons.org/licenses/by/4.0/	*
dc.source	ACS Nano, 2023, 17(1), 743-751	es_ES
dc.subject.other	Gold Nanoparticles	es_ES
dc.subject.other	High-Pressure	es_ES
dc.subject.other	Small-Angle X-Ray Scattering	es_ES
dc.subject.other	Aggregation	es_ES
dc.subject.other	Pressure-Induced Diffusion	es_ES
dc.title	Behavior of au nanoparticles under pressure observed by in situ small-angle X-ray scattering	es_ES
dc.type	info:eu-repo/semantics/article	es_ES
dc.relation.publisherVersion	https://doi.org/10.1021/acsnano.2c10643	es_ES
dc.rights.accessRights	openAccess	es_ES
dc.identifier.DOI	10.1021/acsnano.2c10643
dc.type.version	publishedVersion	es_ES