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Updated: Feb 1, 2026

Production and Targeting of Monovalent Quantum Dots
Published on: October 23, 2014
Photochromic control of a plasmon-quantum dots coupled system
Gwénaëlle Lamri1, Artur Movsesyan, Edite Figueiras
1Lumière, nanomatériaux et nanotechnologies (L2n), Institut Charles Delaunay, CNRS, Université de Technologie de Troyes, 12 rue Marie Curie, CS 42060, 10004 Troyes Cedex, France. anne_laure.baudrion@utt.fr.
Abstract:
The control of quantum dot (QD) photoluminescence (PL) is a challenge for many applications. It is well known that plasmonic resonances can enhance this PL. In this work, we couple QDs with silver nanoparticles and immerse the system in a photochromic organic material. As these molecules are optical switches going from a transparent to a colored isomer by absorbing UV light, we observe on one hand a Förster Resonant Energy Transfer (FRET) between the QD emission and the absorbing isomer and on the other hand a plasmonic PL enhancement. The photochromic transition leads to the optical control of the FRET, allowing us to control the QD de-excitation preferences (radiative or non-radiative) and so the emitted light.
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