title: Fabrication of Inkjet-Printed Gold Nanostar Patterns with Photothermal Properties on Paper Substrate.
abstract: Inkjet printing technology has brought significant advances in patterning various functional materials that can meet important challenges in personalized medical treatments. Indeed, patterning of photothermal active anisotropic gold nanoparticles is particularly promising for the development of low-cost tools for localized photothermal therapy. In the present work, stable inks containing PEGylated gold nanostars (GNSs) were prepared and inkjet printed on a pigment-coated paper substrate. A significant photothermal effect (ΔT ≅ 20 °C) of the printed patterns was observed under near infrared (NIR) excitation of the localized surface plasmon resonance (LSPR) of the GNS with low laser intensity (I ≅ 0.2 W/cm(2)). Besides the pronounced photothermal effect, we also demonstrated, as an additional valuable effect, the release of a model fluorescent thiol-terminated Bodipy dye (BDP-SH) from the printed gold surface, both under bulk heating and NIR irradiation. These preliminary results suggest the way of the development of a new class of low-cost, disposable, and smart devices for localized thermal treatments combined with temperature-triggered drug release.
authors.affiliation: Department of Physics "G. Occhialini", Nanomedicine Center, University of Milano-Bicocca , piazza della Scienza 3, 20126 Milan, Italy.
authors.forename: Mykola
authors.initials: M
authors.lastname: Borzenkov
authors.affiliation: Laboratory of Physical Chemistry, Center for Functional Materials, Åbo Akademi University , Porthaninkatu 3-5, 20500 Turku, Finland.
authors.forename: Anni
authors.initials: A
authors.lastname: Määttänen
authors.affiliation: Laboratory of Physical Chemistry, Center for Functional Materials, Åbo Akademi University , Porthaninkatu 3-5, 20500 Turku, Finland.
authors.forename: Petri
authors.initials: P
authors.lastname: Ihalainen
authors.affiliation: Department of Physics "G. Occhialini", Nanomedicine Center, University of Milano-Bicocca , piazza della Scienza 3, 20126 Milan, Italy.
authors.forename: Maddalena
authors.initials: M
authors.lastname: Collini
authors.affiliation: Department of Chemistry, University of Pavia , viale Taramelli 12, 27100 Pavia, Italy.
authors.forename: Elisa
authors.initials: E
authors.lastname: Cabrini
authors.affiliation: Department of Chemistry, University of Pavia , viale Taramelli 12, 27100 Pavia, Italy.
authors.forename: Giacomo
authors.initials: G
authors.lastname: Dacarro
authors.affiliation: Department of Chemistry, University of Pavia , viale Taramelli 12, 27100 Pavia, Italy.
authors.forename: Piersandro
authors.initials: P
authors.lastname: Pallavicini
authors.affiliation: Department of Physics "G. Occhialini", Nanomedicine Center, University of Milano-Bicocca , piazza della Scienza 3, 20126 Milan, Italy.
authors.forename: Giuseppe
authors.initials: G
authors.lastname: Chirico
mesh_terms: D001896:Boron Compounds / Q000737:chemistry; D006046:Gold / Q000737:chemistry*; D008027:Light; D053768:Metal Nanoparticles / Q000737:chemistry* / Q000648:ultrastructure; D018625:Microscopy, Atomic Force; D055616:Microtechnology / Q000379:methods*; D010209:Paper; D011092:Polyethylene Glycols / Q000737:chemistry; D011327:Printing / Q000379:methods*; D019265:Spectroscopy, Near-Infrared; D013438:Sulfhydryl Compounds / Q000737:chemistry; D013696:Temperature
chemical_list: C095489:4,4-difluoro-4-bora-3a,4a-diaza-s-indacene; D001896:Boron Compounds; D013438:Sulfhydryl Compounds; D011092:Polyethylene Glycols; D006046:Gold
keywords: NIR irradiation; controlled release; gold nanostars; inkjet printing; photothermal effect