Počet záznamů: 1  

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

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    SYSNO ASEP0542125
    Druh ASEPJ - Článek v odborném periodiku
    Zařazení RIVJ - Článek v odborném periodiku
    Poddruh JČlánek ve WOS
    NázevThe characterisation of polydimethylsiloxane containing gold nanoparticles as a function of curing time
    Tvůrce(i) Cutroneo, Mariapompea (UJF-V) ORCID
    Havránek, Vladimír (UJF-V) RID
    Macková, Anna (UJF-V) RID, ORCID
    Malinský, Petr (UJF-V) RID, ORCID
    Torrisi, Alfio (UJF-V) RID, ORCID
    Silipigni, L. (IT)
    Slepička, P. (CZ)
    Fajstavr, D. (CZ)
    Torrisi, L. (IT)
    Celkový počet autorů9
    Zdroj.dok.Surface and Interface Analysis - ISSN 0142-2421
    Roč. 53, č. 7 (2021), s. 618-626
    Poč.str.9 s.
    Forma vydáníTištěná - P
    Jazyk dok.eng - angličtina
    Země vyd.GB - Velká Británie
    Klíč. slovaabsorbance ; atomic-force microscopy ; curing time ; nanoparticles ; porous polydimethylsiloxane ; scanning electron microscopy
    Vědní obor RIVBG - Jaderná, atomová a mol. fyzika, urychlovače
    Obor OECDAtomic, molecular and chemical physics (physics of atoms and molecules including collision, interaction with radiation, magnetic resonances, Mössbauer effect)
    CEPGA19-02482S GA ČR - Grantová agentura ČR
    EF16_013/0001812 GA MŠk - Ministerstvo školství, mládeže a tělovýchovy
    Výzkumná infrastrukturaCANAM II - 90056 - Ústav jaderné fyziky AV ČR, v. v. i.
    Způsob publikováníOmezený přístup
    Institucionální podporaUJF-V - RVO:61389005
    UT WOS000639358000001
    EID SCOPUS85104255795
    DOI10.1002/sia.6948
    AnotaceSpherical 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.
    PracovištěÚstav jaderné fyziky
    KontaktMarkéta Sommerová, sommerova@ujf.cas.cz, Tel.: 266 173 228
    Rok sběru2022
    Elektronická adresahttps://doi.org/10.1002/sia.6948
Počet záznamů: 1