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The Role of Surface Plasmon Resonance of Gold Nanoparticles for the Enhancement of Second Harmonic Generation of Nonlinear Chromophores

1
LPQM, UMR 8537 CNRS, CentraleSupelec, ENS Paris Saclay, 94230 Cachan, France
2
Institute of Materials Science, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi 100000, Vietnam
3
Laboratoire de Chimie Physique, UMR 8000-CNRS, Bât 349, Université Paris-Sud 11, 91405 Orsay CEDEX, France
4
Aix Marseille Univ, CNRS, ICR UMR 7273, F-13397 Marseille, France
5
Université Paris Diderot, UFR de Chimie, 15 Rue Jean Antoine de Baïf, 75013 Paris, France
6
Département de Chimie, UFR des Sciences, Université de Versailles Paris-Saclay, 78035 Versailles CEDEX, France
*
Author to whom correspondence should be addressed.
Inorganics 2019, 7(5), 64; https://doi.org/10.3390/inorganics7050064
Received: 16 April 2019 / Revised: 14 May 2019 / Accepted: 15 May 2019 / Published: 18 May 2019
(This article belongs to the Special Issue Metal Complexes as Nonlinear Optical Molecular Materials)
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Abstract

A significant enhancement of the second harmonic generation (SHG) from second-order nonlinear optical (NLO) dyes in solution has been evidenced when these dyes were grafted onto the surface of spherical gold nanoparticles (AuNPs), as compared to their NLO response without AuNPs. The length, as well as the nature of the spacers between the gold particle and the chromophore, is shown to play an important role, a benzene linker being more favorable to AuNP-4-dimethylamino-N-methyl-4-stilbazolium tosylate (DAST) interactions, as illustrated by a higher exaltation of the NLO response for DAST molecules linked to AuNP via a phenyl ring as compared to their equivalent with a CH2–CH2 link. View Full-Text
Keywords: nanoparticles; nonlinear optics; chromophore; plasmonics nanoparticles; nonlinear optics; chromophore; plasmonics
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Bisht, A.S.; Hoang-Thi, K.; Ledoux-Rak, I.; Remita, H.; Dumur, F.; Guerlin, A.; Dumas, E.; Mayer, C.R. The Role of Surface Plasmon Resonance of Gold Nanoparticles for the Enhancement of Second Harmonic Generation of Nonlinear Chromophores. Inorganics 2019, 7, 64.

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