000060900 001__ 60900
000060900 005__ 20190529115211.0
000060900 0247_ $$2doi$$a10.1021/jp5096129
000060900 0248_ $$2sideral$$a89028
000060900 037__ $$aART-2014-89028
000060900 041__ $$aeng
000060900 100__ $$0(orcid)0000-0002-2576-6382$$aPrieto, M.
000060900 245__ $$aMorphological tunability of the plasmonic response: From hollow gold nanoparticles to gold nanorings
000060900 260__ $$c2014
000060900 5060_ $$aAccess copy available to the general public$$fUnrestricted
000060900 5203_ $$aThe optical and morphological properties of hollow gold nanoparticles (HGNPs) can be finely modified by employing poly-l-lysine hydrobromide (PLL), a homopoly amino acid of the l-lysine, used as reducer and stabilizer. We demonstrate that the reshaping of these plasmonic hollow nanostructures responds to an Ostwald ripening process in which the initial HGNPs dissolve under the acidic conditions provided by the PLL generating chloroaurate ions. These ions are then reduced by the primary amines of the PLL itself to produce metallic gold, which is then redeposited on the surface of the HGNPs, rendering the final shape: either nanorings or even spheres depending on the contact time. We investigate locally the plasmonic response of these nanostructures by electron energy loss spectroscopy (EELS). The plasmon excitations are interpreted by discrete dipole approximation (DDA) simulations. We demonstrate that, thanks to this controlled top-down morphological modification, a fine-tuning of the optical response is possible. Unlike the traditional lithographic techniques, this has been achieved in a controlled manner using wet chemistry, enabling the potential use of these nanostructures for a broad range of plasmonic applications, including biomedicine, catalysis, and quantum communications.
000060900 536__ $$9info:eu-repo/grantAgreement/ES/MINECO/FIS2013-46159-C3-3-P$$9info:eu-repo/grantAgreement/EC/FP7/614715/EU/A Photo-triggered On-demand Drug Delivery System for Chronic Pain/NANOHEDONISM$$9info:eu-repo/grantAgreement/EC/FP7/321642/EU/Development of a microfluidic platform to produce nanomaterials and assessment on new nanotechnology applications/PLATFORM2NANO$$9info:eu-repo/grantAgreement/EC/FP7/312483/EU/Enabling Science and Technology through European Electron Microscopy/ESTEEM 2
000060900 540__ $$9info:eu-repo/semantics/openAccess$$aAll rights reserved$$uhttp://www.europeana.eu/rights/rr-f/
000060900 590__ $$a4.772$$b2014
000060900 591__ $$aCHEMISTRY, PHYSICAL$$b29 / 139 = 0.209$$c2014$$dQ1$$eT1
000060900 591__ $$aMATERIALS SCIENCE, MULTIDISCIPLINARY$$b32 / 260 = 0.123$$c2014$$dQ1$$eT1
000060900 591__ $$aNANOSCIENCE & NANOTECHNOLOGY$$b21 / 80 = 0.262$$c2014$$dQ2$$eT1
000060900 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/acceptedVersion
000060900 700__ $$0(orcid)0000-0002-2071-9093$$aArenal, R.
000060900 700__ $$aHenrard, L.
000060900 700__ $$0(orcid)0000-0001-6971-5192$$aGomez, L.$$uUniversidad de Zaragoza
000060900 700__ $$0(orcid)0000-0002-6873-5244$$aSebastian, V.$$uUniversidad de Zaragoza
000060900 700__ $$0(orcid)0000-0003-3165-0156$$aArruebo, M.$$uUniversidad de Zaragoza
000060900 7102_ $$15005$$2555$$aUniversidad de Zaragoza$$bDpto. Ing.Quím.Tecnol.Med.Amb.$$cÁrea Ingeniería Química
000060900 773__ $$g118, 49 (2014), 28804-28811$$pJ. phys. chem., C$$tJournal of Physical Chemistry C$$x1932-7447
000060900 8564_ $$s1282640$$uhttps://zaguan.unizar.es/record/60900/files/texto_completo.pdf$$yPostprint
000060900 8564_ $$s40403$$uhttps://zaguan.unizar.es/record/60900/files/texto_completo.jpg?subformat=icon$$xicon$$yPostprint
000060900 909CO $$ooai:zaguan.unizar.es:60900$$particulos$$pdriver
000060900 951__ $$a2019-05-29-11:39:35
000060900 980__ $$aARTICLE