All-Dielectric Nanostructures with a Thermoresponsible Dynamic Polymer Shell

Anna A. Nikitina, Valentin A. Milichko, Alexander S. Novikov, Artem O. Larin, Proloy Nandi, Utkur Mirsaidov, Daria V. Andreeva, Mikhail V. Rybin, Yuri S. Kivshar, Ekaterina V. Skorb

Research output: Contribution to journalArticlepeer-review

Abstract

We suggest a new strategy for creating stimuli-responsive bio-integrated optical nanostructures based on Mie-resonant silicon nanoparticles covered by an ensemble of similarity negatively charged polyelectrolytes (heparin and sodium polystyrene sulfonate). The dynamic tuning of the nanostructures’ optical response is due to light-induced heating of the nanoparticles and swelling of the polyelectrolyte shell. The resulting hydrophilic/hydrophobic transitions significantly change the shell thickness and reversible shift of the scattering spectra for individual nanoparticles up to 60 nm. Our findings bring novel opportunities for the application of smart nanomaterials in nanomedicine and bio-integrated nanophotonics.

Original languageEnglish
Pages (from-to)12737-12741
Number of pages5
JournalAngewandte Chemie - International Edition
Volume60
Issue number23
DOIs
StatePublished - 1 Jun 2021

Scopus subject areas

  • Catalysis
  • Chemistry(all)

Keywords

  • all-dielectric nanophotonics
  • polyelectrolyte assembly
  • silicon nanoparticles
  • stimuli-responsive structures

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