Thermoresponsive Fluorescence Switches Based on Au@pNIPAM Nanoparticles
| Autor: | Dana Kamzabek, Galina V. Dubacheva, Liliane Coche-Guérente, Fabien Miomandre, Brieuc Le Dé |
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| Přispěvatelé: | Photophysique et Photochimie Supramoléculaires et Macromoléculaires (PPSM), Institut de Chimie du CNRS (INC)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Ecole Normale Supérieure Paris-Saclay (ENS Paris Saclay), Département de Chimie Moléculaire (DCM), Université Grenoble Alpes (UGA)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS) |
| Rok vydání: | 2021 |
| Předmět: |
Materials science
Fluorophore Nanostructure Nanoparticle Nanotechnology 02 engineering and technology Surfaces and Interfaces 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Fluorescence 0104 chemical sciences chemistry.chemical_compound Dynamic light scattering chemistry Colloidal gold Electrochemistry [CHIM]Chemical Sciences General Materials Science 0210 nano-technology Absorption (electromagnetic radiation) Spectroscopy Plasmon ComputingMilieux_MISCELLANEOUS |
| Zdroj: | Langmuir Langmuir, American Chemical Society, 2021, 37 (37), pp.10971-10978. ⟨10.1021/acs.langmuir.1c01397⟩ |
| ISSN: | 1520-5827 0743-7463 |
| Popis: | Despite numerous studies emphasizing the plasmonic impact on fluorescence, the design of a dynamic system allowing on-demand fluorescence switching in a single nanostructure remains challenging. The reversibility of fluorescence switching and the versatility of the approach, in particular its compatibility with a wide range of nanoparticles and fluorophores, are among the main experimental difficulties. In this work, we achieve reversible fluorescence switching by coupling metal nanoparticles with fluorophores through stimuli-responsive organic linkers. As a proof of concept, we link gold nanoparticles with fluorescein through thermoresponsive poly(N-isopropylacrylamide) at a tunable grafting density and characterize their size and optical response by dynamic light scattering, absorption, and fluorescence spectroscopies. We show that the fluorescence emission of these hybrid nanostructures can be switched on-demand using the thermoresponsive properties of poly(N-isopropylacrylamide). The described system presents a general strategy for the design of nanointerfaces, exhibiting reversible fluorescence switching via external control of metal nanoparticle/fluorophore distance. |
| Databáze: | OpenAIRE |
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