Photothermal effect of gold nanostar patterns inkjet-printed on coated paper substrates with different permeability

Mykola Borzenkov, Anni Määttänen, Petri Ihalainen, Maddalena Collini, Elisa Cabrini, Giacomo Dacarro, Piersandro Pallavicini, Giuseppe Chirico

    Forskningsoutput: TidskriftsbidragArtikelVetenskapligPeer review

    6 Citeringar (Scopus)

    Sammanfattning

    Inkjet printing of spherical gold nanoparticles is widely applied in the fabrication of analytical and diagnostics tools. These methods could be extended to non-spherical gold nanoparticles that can efficiently release heat locally when irradiated in the near infrared (NIR) wavelength region, due to localized surface plasmon resonance (LSPR). However, this promising application requires the ability to maintain high efficiency and tunability of the NIR LSPR of the printed nanoparticles. In this study stable inks containing PEGylated gold nanostars (GNS) were fabricated and successfully inkjet-printed onto differently coated paper substrates with different porosity and permeability. A pronounced photothermal effect was observed under NIR excitation of LSPR of the printed GNS patterns even at low laser intensities. It was found that beside the direct role of the laser intensity, this effect depends appreciably on the printing parameters, such as drop density (δ, drops/mm2) and number of printed layers, and, critically, on the permeability of the coated paper substrates. These results will promote the development of GNS-based printed platforms for local photothermal therapy.
    OriginalspråkOdefinierat/okänt
    Sidor (från-till)1480–1485
    TidskriftBeilstein Journal of Nanotechnology
    Volym7
    DOI
    StatusPublicerad - 2016
    MoE-publikationstypA1 Tidskriftsartikel-refererad

    Nyckelord

    • Inkjet printing
    • Gold nanoparticles
    • Surface plasmon resonance

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