Three-color plasmon-mediated reduction of diazonium salts over metasurfaces.
| Autor: | Therien DAB; Department of Chemistry, University of Western Ontario 1151 Richmond Street London ON N6A 5B7 Canada flagugne@uwo.ca., McRae DM; Department of Chemistry, University of Western Ontario 1151 Richmond Street London ON N6A 5B7 Canada flagugne@uwo.ca., Mangeney C; Université de Paris, Laboratoire de Chimie et Biochimie Pharmacologiques et Toxicologiques, LCBPT, UMR 8601 CNRS 45 rue des Saints Péres F-75006 Paris France., Félidj N; Université de Paris, ITODYS, UMR 7086 CNRS 15 rue J.-A. de Baïf F-75013 Paris France., Lagugné-Labarthet F; Department of Chemistry, University of Western Ontario 1151 Richmond Street London ON N6A 5B7 Canada flagugne@uwo.ca. |
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| Jazyk: | angličtina |
| Zdroj: | Nanoscale advances [Nanoscale Adv] 2021 Feb 26; Vol. 3 (9), pp. 2501-2507. Date of Electronic Publication: 2021 Feb 26 (Print Publication: 2021). |
| DOI: | 10.1039/d0na00862a |
| Abstrakt: | Surface plasmon-mediated chemical reactions are of great interest for a variety of applications ranging from micro- and nanoscale device fabrication to chemical reactions of societal interest for hydrogen production or carbon reduction. In this work, a crosshair-like nanostructure is investigated due to its ability to induce local enhancement of the local electromagnetic field at three distinct wavelengths corresponding to three plasmon resonances. The structures are irradiated in the presence of a solution containing diazonium salts at wavelengths that match the resonance positions at 532 nm, 632.8 nm, and 800 nm. The resulting grafting shows polarization and wavelength-dependent growth patterns at the nanoscale. The plasmon-mediated reactions over arrays of the crosshair structures are further investigated using scanning electron microscopy and supported by finite domain time domain modelling revealing wavelength and polarization specific reactions. Such an approach enables nanoscale molecular printing using light source opening multiplexing applications where different analytes can be grafted under distinct opto-geometric conditions. Competing Interests: There are no conflicts to declare. (This journal is © The Royal Society of Chemistry.) |
| Databáze: | MEDLINE |
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