A 5-(difluorenyl)-1,10-phenanthroline-based Ru(II) complex as a coating agent for potential multifunctional gold nanoparticles

Juliette Moreau; François Lux; Mickaël Four; Joanna Olesiak-Banska; Katarzyna Matczyszyn; Pascal Perriat; Céline Frochot; Philippe Arnoux; Olivier Tillement; Marek Samoc; Glauco Ponterini; Stéphane Roux; Gilles Lemercier

doi:10.1039/C4CP01534G

A 5-(difluorenyl)-1,10-phenanthroline-based Ru(ii) complex as a coating agent for potential multifunctional gold nanoparticles†

Juliette Moreau,^a François Lux,^b Mickaël Four,^a Joanna Olesiak-Banska,^c Katarzyna Matczyszyn,^c Pascal Perriat,^d Céline Frochot,^ef Philippe Arnoux,^e Olivier Tillement,^b Marek Samoc,^c Glauco Ponterini,^g Stéphane Roux^h and Gilles Lemercier*^af

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* Corresponding authors

^a Institut de Chimie Moléculaire de Reims, UMR CNRS n° 7312, Reims Champagne-Ardenne University, Moulin de la Housse – BP 1039, 51687 Reims Cedex 2, France
E-mail: gilles.lemercier@univ-reims.fr
Fax: +33 326913243

^b Institut Lumière-Matière, Université de Lyon, Équipe Fennec, UMR CNRS n° 5306, 69622 Villeurbanne, France

^c Institute of Physical and Theoretical Chemistry, Wroclaw University of Technology, Wybrzeze Wyspianskiego 27, 50-370 Wroclaw, Poland

^d Matériaux Ingénierie et Science, INSA-Lyon, UMR 5510 CNRS, Université de Lyon, 69621 Villeurbanne Cedex, France

^e Laboratoire Réactions et Génie des Procédés (LRGP), UMR CNRS n° 7274, CNRS, Nancy, France

^f GDR CNRS n° 3049 ‘‘Médicaments Photoactivables, Photochimiothérapie (PHOTOMED)’’, France

^g Department of Life Sciences, University of Modena and Reggio Emilia, via Campi 183, 41125 Modena, Italy

^h Institut UTINAM, UMR 6213 CNRS-Université de Franche-Comté Équipe Nanoparticules, Contaminants et Membranes, 25030 Besançon Cedex, France

Abstract

The synthesis and photophysical properties of small gold nanoparticles (NPs, AuNP-[Ru-PFF]) surface functionalized by 5-substituted-1,10-phenanthroline-ligand based Ru(II) complexes are described. Luminescence of the grafted and confined Ru(II) complexes is totally quenched on the gold surface. Nonlinear optical properties were determined via Z-scan measurements in the range 600–1300 nm for both the free Ru(II) complex and the related NPs. In the short wavelength range (around 600 nm) the behaviour switches from that of two-photon absorption (2PA) for the complex to saturable absorption for the NPs. 2PA applications such as optical power limiting or two-photon dioxygen sensitization can be anticipated for these nanoplatforms.

Physical Chemistry Chemical Physics

A 5-(difluorenyl)-1,10-phenanthroline-based Ru(ii) complex as a coating agent for potential multifunctional gold nanoparticles†

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A 5-(difluorenyl)-1,10-phenanthroline-based Ru(II) complex as a coating agent for potential multifunctional gold nanoparticles

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