Marie Plissonneau

Solvay (France)

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Olivier Tillement

Institut Lumière Matière

François Lux

Institut Lumière Matière

Mona Tréguer‐Delapierre

Institut de Chimie de la Matière Condensée de Bordeaux

Mireille Dumoulin

University of Liège

ÉD

Étienne Duguet

Institut de Chimie de la Matière Condensée de Bordeaux

Vincent Forge

Laboratoire de Chimie et Biologie des Métaux

Pascaline Rivory

Centre National de la Recherche Scientifique

Laurence Heinrich-Balard

Université Claude Bernard Lyon 1

ÉA

Éric Allémann

University of Geneva

C. Marquette

Université Grenoble Alpes

Cooperative Institutions

Centre National de la Recherche Scientifique

Université de Bordeaux

Institut Polytechnique de Bordeaux

Université Claude Bernard Lyon 1

Inserm

Institut de Chimie de la Matière Condensée de Bordeaux

Université Grenoble Alpes

Institut Lumière Matière

Commissariat à l'Énergie Atomique et aux Énergies Alternatives

Solvay (France)

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Efficient Passivation of Ag Nanowires with 11‐Mercaptoundecanoic Acid Probed Using In Situ Total‐Internal‐Reflection Surface‐Enhanced Raman Scattering Spectroscopy

ChemNanoMat (2019)

Marie Plissonneau Alexandra Madeira David Talaga Sébastien Bonhommeau Laurent Servant

Abstract A promising passivation strategy of one class of Ag nanostructures of high interest for optoelectronics, namely Ag nanowires (AgNWs), with 11‐mercaptoundecanoic acid (MUA) is described. Combining XPS, electron microscopy and original in‐situ total‐internal‐reflection (TIR) surface‐enhanced Raman scattering (SERS) spectroscopic measurements, the substitution of polyvinylpyrrolidone (PVP) molecules on as‐synthesized PVP‐coated AgNWs by their MUA counterparts is clearly demonstrated. The relevance of the SERS approach to examine the anchoring of the MUA onto the silver surface of specific AgNWs with pentagonal cross‐sections is supported by FDTD simulations. In particular, the TIR‐SERS technique reveals that the PVP‐MUA substitution process can be divided into two main steps, namely (i) the desorption of PVP molecules associated with the anchoring of MUA molecules via the formation of Ag−OOC and Ag−S bonds (accomplished within 40 min), and (ii) the subsequent reorientation of MUA molecules to form only Ag−S bonds (finished in 90 min). The resulting passivation of AgNWs with MUA significantly improves their resistance to corrosion, which is crucial for future commercial applications.

Passivation

Polyvinylpyrrolidone

10.1002/cnma.201900068

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Vectorisation of Gd-based multimodal imaging nanoparticles for an active targeting of amyloid fibrils and hepatocytes cells

Marie Plissonneau

Amyloid (mycology)

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MOESM1 of Gd-nanoparticles functionalization with specific peptides for ß-amyloid plaques targeting

Marie Plissonneau Jonathan Pansieri Laurence Heinrich-Balard Jean‐François Morfin Nathalie Stransky-Heilkron

Surface Modification

Amyloid (mycology)

Posttranslational modification

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Orotracheal administration of contrast agents: a new protocol for brain tumor targeting

NMR in Biomedicine (2015)

Andrea Bianchi Damien Moncelet François Lux Marie Plissonneau Silvia Rizzitelli

The development of new non-invasive diagnostic and therapeutic approaches is of paramount importance in order to improve the outcome of patients with glioblastoma (GBM). In this work we investigated a completely non-invasive pre-clinical protocol to effectively target and detect brain tumors through the orotracheal route, using ultra-small nanoparticles (USRPs) and MRI. A mouse model of GBM was developed. In vivo MRI acquisitions were performed before and after intravenous or orotracheal administration of the nanoparticles to identify and segment the tumor. The accumulation of the nanoparticles in neoplastic lesions was assessed ex vivo through fluorescence microscopy. Before the administration of contrast agents, MR images allowed the identification of the presence of abnormal brain tissue in 73% of animals. After orotracheal or intravenous administration of USRPs, in all the mice an excellent co-localization of the position of the tumor with MRI and histology was observed. The elimination time of the USRPs from the tumor after the orotracheal administration was approximately 70% longer compared with intravenous injection. MRI and USRPs were shown to be powerful imaging tools able to detect, quantify and longitudinally monitor the development of GBMs. The absence of ionizing radiation and high resolution of MRI, along with the complete non-invasiveness and good reproducibility of the proposed protocol, make this technique potentially translatable to humans. To our knowledge, this is the first time that the advantages of a needle-free orotracheal administration route have been demonstrated for the investigation of the pathomorphological changes due to GBMs. Copyright © 2015 John Wiley & Sons, Ltd.

10.1002/nbm.3295

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Plasmon-induced hot electron transfer in AgNW@TiO2@AuNPs nanostructures

Scientific Reports (2018)

Jiaji Cheng Yiwen Li Marie Plissonneau Jiagen Li Junzi Li

Abstract Compared to the limited absorption cross-section of conventional photoactive TiO 2 nanoparticles (NPs), plasmonic metallic nanoparticles can efficiently convert photons from an extended spectrum range into energetic carriers because of the localized surface plasmon resonance (LSPR). Using these metal oxide semiconductors as shells for plasmonic nanoparticles (PNPs) that absorb visible light could extend their applications. The photophysics of such systems is performed using transient absorption measurements and steady extinction simulations and shows that the plasmonic energy transfer from the AgNWs core to the TiO 2 shell results from a hot carrier injection process. Lifetimes obtained from photobleaching decay dynamics suggest that (i) the presence of gold nanoparticles (AuNPs) in AgNWs@TiO 2 @AuNPs systems can further promote the hot carrier transfer process via plasmonic coupling effects and (ii) the carrier dynamics is greatly affected by the shell thickness of TiO 2 . This result points out a definite direction to design appropriate nanostructures with tunable charge transfer processes toward photo-induced energy conversion applications.

Photobleaching

Plasmonic Nanoparticles

Charge carrier

10.1038/s41598-018-32510-2

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Vectorisation de nanoparticules d'imagerie multimodale à base de gadolinium pour un ciblage actif des plaques amyloïdes et de cellules hépatocytes

Marie Plissonneau

Cette these traite du developpement de nanoparticules d'imagerie multimodale vectorisees pour detecter specifiquement des depots amyloides ou certains recepteurs cellulaires. Ces nanoparticules, denommees AGuIX (Activation et Guidage de l'Irradiation par rayonnement X), sont composees d'un squelette de polysiloxane fonctionnalisees par des chelates de DOTAGA(Gd3+). Une fois marquees par un fluorophore organique ou des radioisotopes, ces Nps permettent de combiner jusqu'a trois techniques d'imagerie : l'IRM, qui presente une excellente resolution spatiale, et la scintigraphie et l'imagerie optique qui presentent toutes deux une excellente sensibilite. De par leur diametre hydrodynamique inferieur a 5 nm, ces Nps sont efficacement eliminees par voie renale et les differents tests in vivo realises n'ont pas revele de toxicite de ces objets. Ainsi, les Nps AGuIX sont particulierement indiquees dans le cadre d'un diagnostic precis et precoce de differentes pathologies. L'objectif de la these consiste donc a greffer a la surface de ces Nps des vecteurs ciblants (i) les fibres amyloides ; (ii) les recepteurs asialoglycoproteines des cellules hepatocytes du foie. Selon la nature du vecteur a greffer (i.e. molecule organique, peptide, fragment d'anticorps, …) differentes strategies ont ete mises en place. Nous avons donc dans un premier temps optimise les syntheses des Nps vectorisees, pour ensuite evaluer leur affinite pour leurs cibles respectives in vitro et/ou in vivo

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AGuIX modifications for active tumor targeting and radiolabelling

HAL (Le Centre pour la Communication Scientifique Directe) (2014)

Eloïse Thomas Charles Truillet Marie Plissonneau Frédéric Boschetti Franck Denat

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Silver Nanoshells with Optimized Infrared Optical Response: Synthesis for Thin-Shell Formation, and Optical/Thermal Properties after Embedding in Polymeric Films

Nanomaterials (2023)

Laurent Lermusiaux Lucien Roach Moncef Lehtihet Marie Plissonneau Laure Bertry

We describe a new approach to making ultrathin Ag nanoshells with a higher level of extinction in the infrared than in the visible. The combination of near-infrared active ultrathin nanoshells with their isotropic optical properties is of interest for energy-saving applications. For such applications, the morphology must be precisely controlled, since the optical response is sensitive to nanometer-scale variations. To achieve this precision, we use a multi-step, reproducible, colloidal chemical synthesis. It includes the reduction of Tollens’ reactant onto Sn2+-sensitized silica particles, followed by silver-nitrate reduction by formaldehyde and ammonia. The smooth shells are about 10 nm thick, on average, and have different morphologies: continuous, percolated, and patchy, depending on the quantity of the silver nitrate used. The shell-formation mechanism, studied by optical spectroscopy and high-resolution microscopy, seems to consist of two steps: the formation of very thin and flat patches, followed by their guided regrowth around the silica particle, which is favored by a high reaction rate. The optical and thermal properties of the core-shell particles, embedded in a transparent poly(vinylpyrrolidone) film on a glass substrate, were also investigated. We found that the Ag-nanoshell films can convert 30% of the power of incident near-infrared light into heat, making them very suitable in window glazing for radiative screening from solar light.

Nanoshell

10.3390/nano13030614

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Synthesis and characterization of multimodal Gd-Nanoparticles vectorized for Amyloidosis diagnosis, and their affinity evaluation using Biacore.

HAL (Le Centre pour la Communication Scientifique Directe) (2014)

Marie Plissonneau Pierre Mowat Laurence Heinrich-Balard Pascaline Rivory Nathalie Stransky-Heilkron

Amyloidosis is a systemic disorder in which proteins form insoluble aggregates (or fibrils) in extracellular tissues. Depending of the protein nature and its deposition area, this accumulation could lead to different pathologies. In this project, we focus on three kind of amyloidosis forms: i) Amyloid Aβ, ii) Islet Amyloid PolyPeptide IAPP, iii) Transthyretin TTR, which are respectively responsible of Alzheimer Disease, type II diabetes and finely cardiomyopathy and polyneuropathy. We are investigating two different strategies to target the fibrils: i) Camelid heavy chain antibody fragment (or Nanobody)[1], ii) Peptides derived from the protein responsible of the aggregate.

Amyloid (mycology)

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Evaluation of ultrasmall gadolinium-based nanoparticles for theranostic applications

HAL (Le Centre pour la Communication Scientifique Directe) (2013)

Lucie Sancey Shady Kotb Marie Plissonneau Vincent Motto‐Ros Florence Appaix

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