99159 20230519145401.0 doi 10.1021/acsomega.0c04662 sideral 122661 ART-2021-122661 eng Ulloa, J.A. (orcid)0000-0002-0840-1197 Controlled Growth of Dendrimer-Coated Gold Nanoparticles: A Solvent-Free Process in Mild Conditions 2021 Access copy available to the general public Unrestricted Monodisperse dendrimer-coated gold nanoparticles with a spherical shape have been obtained by direct reduction of HAuCl4 with sodium borohydride in the presence of dodecanethiol as a stabilizer and subsequent functionalization by ligand exchange reaction with polybenzylic thiolated dendrons. The substitution pattern of the dendrimeric units plays a fundamental role in the rate of the functionalization exchange process and consequently conditions the size and the polydispersity of the NPs obtained. An ulterior growth process occurs by thermal stimuli (150 °C) in a solvent-free environment. This method, carried out in mild conditions, allows the formation of highly monodisperse gold NPs with different sizes for different time reactions, and we discuss the mechanisms involved in this process. Finally, we demonstrate the chemical composition and stability of our compounds by structural, thermal, and chemical characterization of the samples before and after thermal treatment. info:eu-repo/grantAgreement/ES/DGA-FSE/E47-20R info:eu-repo/grantAgreement/ES/MINECO-FEDER/PGC2018-097583-B-I00 info:eu-repo/semantics/openAccess by-nc-nd http://creativecommons.org/licenses/by-nc-nd/3.0/es/ 4.132 2021 CHEMISTRY, MULTIDISCIPLINARY 73 / 180 = 0.406 2021 Q2 T2 0.708 2021 Chemistry (miscellaneous) 2021 Q1 Chemical Engineering (miscellaneous) 2021 Q1 5.2 2021 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Barberá, J. Universidad de Zaragoza (orcid)0000-0001-5816-7960 Serrano, J.L. Universidad de Zaragoza (orcid)0000-0001-9866-6633 2013 765 Universidad de Zaragoza Dpto. Química Orgánica Área Química Orgánica 6, 1 (2021), 348-357 ACS Omega ACS OMEGA 2470-1343 668800 http://zaguan.unizar.es/record/99159/files/texto_completo.pdf Versión publicada 2922181 http://zaguan.unizar.es/record/99159/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:99159 articulos driver 2023-05-18-13:39:56 ARTICLE