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The characterisation of polydimethylsiloxane containing gold nanoparticles as a function of curing time

  1. 1.
    SYSNO ASEP0542125
    Document TypeJ - Journal Article
    R&D Document TypeJournal Article
    Subsidiary JČlánek ve WOS
    TitleThe characterisation of polydimethylsiloxane containing gold nanoparticles as a function of curing time
    Author(s) Cutroneo, Mariapompea (UJF-V) ORCID, RID, SAI
    Havránek, Vladimír (UJF-V) RID, SAI, ORCID
    Macková, Anna (UJF-V) RID, ORCID, SAI
    Malinský, Petr (UJF-V) RID, ORCID, SAI
    Torrisi, Alfio (UJF-V) RID, ORCID
    Silipigni, L. (IT)
    Slepička, P. (CZ)
    Fajstavr, D. (CZ)
    Torrisi, L. (IT)
    Number of authors9
    Source TitleSurface and Interface Analysis - ISSN 0142-2421
    Roč. 53, č. 7 (2021), s. 618-626
    Number of pages9 s.
    Publication formPrint - P
    Languageeng - English
    CountryGB - United Kingdom
    Keywordsabsorbance ; atomic-force microscopy ; curing time ; nanoparticles ; porous polydimethylsiloxane ; scanning electron microscopy
    Subject RIVBG - Nuclear, Atomic and Molecular Physics, Colliders
    OECD categoryAtomic, molecular and chemical physics (physics of atoms and molecules including collision, interaction with radiation, magnetic resonances, Mössbauer effect)
    R&D ProjectsGA19-02482S GA ČR - Czech Science Foundation (CSF)
    EF16_013/0001812 GA MŠk - Ministry of Education, Youth and Sports (MEYS)
    Research InfrastructureCANAM II - 90056 - Ústav jaderné fyziky AV ČR, v. v. i.
    Method of publishingLimited access
    Institutional supportUJF-V - RVO:61389005
    UT WOS000639358000001
    EID SCOPUS85104255795
    AnnotationSpherical gold nanoparticles (NPs), 10 nm in diameter, have been dispersed in a type of polydimethylsiloxane, whose polymerisation requires accurate temperature control. At the temperature of 100 degrees C, the polymerisation of the polydimethylsiloxane matrix is completed in 15 min, whereas at room temperature (similar to 20 degrees C), it takes about 24-48 h. Gold NPs were incorporated into polydimethylsiloxane after which the resulting nanocomposites were placed in an oven preheated to 100 degrees C for different curing times. Both porous and bulk nanocomposites were obtained using a bottom-up approach. Polydimethylsiloxane (PDMS) nanocomposites with the weight-percentage concentration of 0.2% of Au NPs were cured for 15, 30 and 45 min. Different curing times have affected the Au-NP properties. The network of porous PDMS nanocomposite promotes a uniform anchoring of the gold NPs. The porous PDMS nanocomposite samples, prepared using the sugar-template method, have been compared with the bulk counterpart to obtain a full characterisation of the material. The dependence of the morphological and electrical properties of gold NPs on their size has been studied by atomic-force microscopy and two-point-probe electrical-conductivity measurement. The optical performance of the bulk PDMS nanocomposites has been analysed by ultraviolet-visible (UV-vis) spectroscopy in the transmission mode. An enhancement of the absorption was observed after the increase of both the nanocomposite-curing time and the percentage of the Au NPs used as fillers. The fabricated nanocomposite can be used to manufacture optical-sensing devices, switches in optoelectronics and optical waveguides.
    WorkplaceNuclear Physics Institute
    ContactMarkéta Sommerová,, Tel.: 266 173 228
    Year of Publishing2022
    Electronic address
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