Aggregation of gold nanoparticles in presence of the thermoresponsive cationic ciblock copolymer PNIPAAM48-b-PAMPTMA6

Herrera Robalino, David; Durán del Amor, María del Mar; Almagro Gómez, Carmen María; Hernández Cifre, José G.

Publication:
Aggregation of gold nanoparticles in presence of the thermoresponsive cationic ciblock copolymer PNIPAAM48-b-PAMPTMA6

dc.contributor.author	Herrera Robalino, David
dc.contributor.author	Durán del Amor, María del Mar
dc.contributor.author	Almagro Gómez, Carmen María
dc.contributor.author	Hernández Cifre, José G.
dc.contributor.department	Química Física
dc.date.accessioned	2025-01-20T11:49:30Z
dc.date.available	2025-01-20T11:49:30Z
dc.date.issued	2021-11-23
dc.description	© 2021 by the authors. This manuscript version is made available under the CC-BY 4.0 license http://creativecommons.org/licenses/by/4.0/ This document is the Published Manuscript version of a Published Work that appeared in final form in Polymers. To access the final edited and published work see https://doi.org/10.3390/polym13234066
dc.description.abstract	The adsorption of the thermoresponsive positively charged copolymer poly(N-isopropylacr ylamide)-block-poly(3-acrylamidopropyl)trimethylammonium chloride, PNIPAAM48-b-PAMPTMA6(+), onto negatively charged gold nanoparticles can provide stability to the nanoparticles and make the emerging structure tunable by temperature. In this work, we characterize the nanocomposite formed by gold nanoparticles and copolymer chains and study the influence of the copolymer on the expected aggregation process that undergoes those nanoparticles at high ionic strength. We also determine the lower critical solution temperature (LCST) of the copolymer (around 42 ºC) and evaluate the influence of the temperature on the nanocomposite. For those purposes, we use dynamic light scattering, UV-vis spectroscopy and transmission electron microscopy. At the working PNIPAAM48-b-PAMPTMA6(+) concentration, we observe the existence of copolymer structures that trap the gold nanoparticles and avoid the formation of nanoparticles aggregates. Finally, we discuss how these structures can be useful in catalysis and nanoparticles recovery.	es
dc.format	application/pdf	es
dc.format.extent	11	es
dc.identifier.citation	Polymers, 2021, Vol. 13 (23) : 4066
dc.identifier.doi	https://doi.org/10.3390/polym13234066
dc.identifier.issn	Electronic: 2073-4360
dc.identifier.uri	http://hdl.handle.net/10201/148792
dc.language	eng	es
dc.publisher	MDPI	es
dc.relation	Proyecto regional "Desarrollo de metodologías para la caracterización estructural de macromoléculas y nanopartículas en disolución. Aplicaciones a sistemas biológicos y materiales sintéticos", 20933/PI/18, Fundación Séneca (Agencia Regional para la Ciencia y la Tecnología de la Región de Murcia).	es
dc.relation.publisherversion	https://www.mdpi.com/2073-4360/13/23/4066	es
dc.rights	info:eu-repo/semantics/openAccess	es
dc.rights	Atribución 4.0 Internacional	*
dc.rights.uri	http://creativecommons.org/licenses/by/4.0/	*
dc.subject	Gold nanoparticles	es
dc.subject	Thermoresponsive copolymers	es
dc.subject	Dynamic light scattering	es
dc.subject	Surface plasmon resonance	es
dc.subject.other	CDU::5 - Ciencias puras y naturales::54 - Química::544 - Química física	es
dc.title	Aggregation of gold nanoparticles in presence of the thermoresponsive cationic ciblock copolymer PNIPAAM48-b-PAMPTMA6	es
dc.type	info:eu-repo/semantics/article	es
dspace.entity.type	Publication	es