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Fabrication and characterisation of ligand-functionalised ultrapure monodispersed metal nanoparticle nanoassemblies employing advanced gas deposition technique
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Solid State Physics. Rovira & Virgili Univ, Dept Elect Elect & Automat Engn, Tarragona 43007, Spain.;Mol Fingerprint Sweden AB, S-75655 Uppsala, Sweden..
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Solid State Physics. Mol Fingerprint Sweden AB, S-75655 Uppsala, Sweden.
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Solid State Physics. Mol Fingerprint Sweden AB, S-75655 Uppsala, Sweden.ORCID iD: 0000-0003-0296-5247
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Solid State Physics. Rovira & Virgili Univ, Dept Elect Elect & Automat Engn, Tarragona 43007, Spain..
2018 (English)In: Nanotechnology, ISSN 0957-4484, E-ISSN 1361-6528, Vol. 29, no 6, article id 065603Article in journal (Refereed) Published
Abstract [en]

Here, we report for the first time the fabrication of ligand-functionalised ultrapure monodispersed metal nanoparticles (Au, Cu, and Pt) from their pure metal precursors using the advanced gas deposition technique. The experimental conditions during nanoparticle formation were adjusted in order to obtain ultrafine isolated nanoparticles on different substrates. The morphology and surface analysis of the as-deposited metal nanoparticles were investigated using scanning electron microscopy, x-ray diffraction and Fourier transform infra-red spectroscopy, which demonstrated the formation of highly ordered pure crystalline nanoparticles with a relatively uniform size distribution of similar to 10 nm (Au), similar to 4 nm (Cu) and similar to 3 nm (Pt), respectively. A broad range of organic ligands containing thiol or amine functional groups were attached to the nanoparticles to form continuous networks of nanoparticle-ligand nanoassemblies, which were characterised by scanning electron microscopy and x-ray photoelectron spectroscopy. The electrical resistance of the functional nanoassemblies deposited in the gap spacing of two microfabricated parallel Au electrodes patterned on silicon substrates ranged between tens of k Omega and tens of M Omega, which is suitable for use in many applications including (bio)chemical sensors, surface-enhanced Raman spectroscopy and molecular electronic rectifiers.

Place, publisher, year, edition, pages
IOP PUBLISHING LTD , 2018. Vol. 29, no 6, article id 065603
Keywords [en]
metal nanoparticles, monodispersed, advanced gas deposition, molecularly-capped metal nanoparticles, self-assembled monolayers
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:uu:diva-341557DOI: 10.1088/1361-6528/aa9f65ISI: 000419631700003PubMedID: 29206108OAI: oai:DiVA.org:uu-341557DiVA, id: diva2:1182510
Available from: 2018-02-13 Created: 2018-02-13 Last updated: 2018-03-28Bibliographically approved

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Cindemir, UmutÖsterlund, LarsIonescu, Radu

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