Pulsed laser reshaping and fragmentation of upconversion nanoparticles — from hexagonal prisms to 1D nanorods through “Medusa”-like structures

verfasst von

Laszlo Sajti, Denis N. Karimov, Vasilina V. Rocheva, Nataliya A. Arkharova, Kirill V. Khaydukov, Oleg I. Lebedev, Alexey E. Voloshin, Alla N. Generalova, Boris N. Chichkov, Evgeny V. Khaydukov

Abstract

One dimensional (1D) nanostructures attract considerable attention, enabling a broad application owing to their unique properties. However, the precise mechanism of 1D morphology attainment remains a matter of debate. In this study, ultrafast picosecond (ps) laser-induced treatment on upconversion nanoparticles (UCNPs) is offered as a tool for 1D-nanostructures formation. Fragmentation, reshaping through recrystallization process and bioadaptation of initially hydrophobic (β-Na_1.5Y_1.5F₆: Yb³⁺, Tm³⁺/β-Na_1.5Y_1.5F₆) core/shell nanoparticles by means of one-step laser treatment in water are demonstrated. “True” 1D nanostructures through “Medusa”-like structures can be obtained, maintaining anti-Stokes luminescence functionalities. A matter of the one-dimensional UCNPs based on direction of energy migration processes is debated. The proposed laser treatment approach is suitable for fast UCNP surface modification and nano-to-nano transformation, that open unique opportunities to expand UCNP applications in industry and biomedicine. [Figure not available: see fulltext.].

Organisationseinheit(en)

Institut für Quantenoptik
PhoenixD: Simulation, Fabrikation und Anwendung optischer Systeme

Externe Organisation(en)

AIT Austrian Institute of Technology GmbH
Institute of Photon Technologies of Federal Scientific Research Centre “Crystallography and Photonics” of the Russian Academy of Sciences
Universite de Caen
Sechenov First Moscow State Medical University
Shemyakin and Ovchinnikov Institute of Bioorganic Chemistry of the Russian Academy of Sciences (IBCh RAS)

Typ

Artikel

Journal

Nano research

Band

14

Seiten

1141-1148

Anzahl der Seiten

8

ISSN

1998-0124

Publikationsdatum

04.2021

Publikationsstatus

Veröffentlicht

Peer-reviewed

Ja

ASJC Scopus Sachgebiete

Atom- und Molekularphysik sowie Optik, Allgemeine Materialwissenschaften, Physik der kondensierten Materie, Elektrotechnik und Elektronik

Elektronische Version(en)

https://doi.org/10.1007/s12274-020-3163-4 (Zugang: Geschlossen)