Luminescence enhancement of alloyed quantum dots bound to gold nanoparticles by mercaptocarboxylic acids in colloidal complexes

Tatiana K Kormilina, Irina A Arefina, Evgeniia A Stepanidenko, Danil A Kurshanov, Sergei A Cherevkov, Aliaksei Dubavik, Aleksandr P Litvin, Alexander V Baranov, Elena V Ushakova*, Anatoly V Fedorov

*Corresponding author for this work

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

Abstract

The understanding of the physical mechanisms of the nanoobjects interaction within the nanostructured complex materials is one of the main tasks for the development of novel materials with tunable properties. In this work, we develop a formation procedure of the colloidal complexes based on alloyed CdZnSe/ZnS quantum dots and gold nanoparticles where the various mercaptocarboxylic acids are used as the binding molecules. The QD photoluminescence enhancement (up to × 3.1) can be achieved by the control of the interparticle distance in colloidal solutions. We provide a detailed discussion on the influence of the linking molecules on the nanoparticle complexes optical parameters through the steady-state and time-resolved spectral measurements.
Original languageEnglish
Article number465705
JournalNanotechnology
Volume30
Issue number46
Online published3 Sept 2019
DOIs
Publication statusPublished - 15 Nov 2019

Research Keywords

  • colloidal nanoparticles
  • energy transfer
  • metal nanoparticles
  • PL enhancement
  • PL kinetics
  • quantum dots

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