Noée Dumait

Institut des Sciences Chimiques de Rennes

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Stéphane Cordier

Centre National de la Recherche Scientifique

Fabien Grasset

National Institute for Materials Science

Maria Amela‐Cortes

Institut des Sciences Chimiques de Rennes

Yann Molard

Université de Rennes

Tetsuo Uchikoshi

National Institute for Materials Science

Pierric Lemoine

Centre National de la Recherche Scientifique

Naoki Ohashi

National Institute for Materials Science

Thi Kim Ngân Nguyên

Thai Nguyen University

Adèle Renaud

Université de Rennes

Maxence Wilmet

Saint-Gobain (France)

Cooperative Institutions

Centre National de la Recherche Scientifique

Université de Rennes

Institut des Sciences Chimiques de Rennes

National Institute for Materials Science

Université Rennes 2

École Nationale Supérieure de Chimie de Rennes

University of Tsukuba

Institut National des Sciences Appliquées de Rennes

Miniaturisation pour la Synthèse, l'Analyse et la Protéomique

University of Stuttgart

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CSD 1791045: Experimental Crystal Structure Determination

The Cambridge Structural Database (2017)

Norio Saito Pierric Lemoine Noée Dumait Maria Amela‐Cortes Serge Paofai

10.25505/fiz.icsd.cc1y3qnf

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Citations (0)

New ultra-violet and near-infrared blocking filters for energy saving applications: fabrication of tantalum metal atom cluster-based nanocomposite thin films by electrophoretic deposition

Journal of Materials Chemistry C (2017)

Thi Kim Ngân Nguyên Adèle Renaud Maxence Wilmet Noée Dumait Serge Paofai

First fabrication of a Ta₆-based nanocomposite coating, for energy saving applications, by an EPD solution process.

Electrophoretic Deposition

Deposition

10.1039/c7tc02454a

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Citations (43)

CCDC 2251862: Experimental Crystal Structure Determination

The Cambridge Structural Database (2023)

I. Carrasco Philipp Ehni Max Ebert Noée Dumait Grégory Taupier

An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.

10.5517/ccdc.csd.cc2fl7q0

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CSD 1791050: Experimental Crystal Structure Determination

The Cambridge Structural Database (2017)

Norio Saito Pierric Lemoine Noée Dumait Maria Amela‐Cortes Serge Paofai

10.25505/fiz.icsd.cc1y3qtl

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A review on functional nanoarchitectonics nanocomposites based on octahedral metal atom clusters (Nb ₆ , Mo ₆ , Ta ₆ , W ₆ , Re ₆ ): inorganic 0D and 2D powders and films

Science and Technology of Advanced Materials (2022)

Thi Kim Ngân Nguyên Clément Lebastard Maxence Wilmet Noée Dumait Adèle Renaud

This review is dedicated to various functional nanoarchitectonic nanocomposites based on molecular octahedral metal atom clusters (Nb6, Mo6, Ta6, W6, Re6). Powder and film nanocomposites with two-dimensional, one-dimensional and zero-dimensional morphologies are presented, as well as film matrices from organic polymers to inorganic layered oxides. The high potential and synergetic effects of these nanocomposites for biotechnology applications, photovoltaic, solar control, catalytic, photonic and sensor applications are demonstrated. This review also provides a basic level of understanding how nanocomposites are characterized and processed using different techniques and methods. The main objective of this review would be to provide guiding significance for the design of new high-performance nanocomposites based on transition metal atom clusters.

10.1080/14686996.2022.2119101

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Citations (48)

Tunable photo-induced electronic property of octahedral metal clusters

Materials Letters X (2021)

Thi Kim Ngân Nguyên Fabien Grasset Noée Dumait Stéphane Cordier David Berthebaud

The tunable photo-induced electronic property of the Cs2[{Mo6Bri8}Bra6] and Br2[{Ta6Bri12}(H2O)a6] octahedral metal cluster-based compounds was characterized by the zeta potential measurement upon irradiation by ultraviolet–visible (UV–Vis) light. The enhancement of the electronic charge on the surface of the [{Mo6Bri8}Bra6]2- cluster-based anion caused by the irradiation increased the negative zeta potential. Both compounds showed the dependence of the zeta potential as a function of the light excitation. This will be a promising property for sensor applications based on the reversibility of the photo-electrochemical properties of the functional cluster.

Zeta potential

Ultraviolet

Visible spectrum

10.1016/j.mlblux.2021.100079

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Original Synthesis of Molybdenum Nitrides Using Metal Cluster Compounds as Precursors: Applications in Heterogeneous Catalysis

Chemistry of Materials (2020)

Kévin Guy Franck Tessier Helena Kaper Fabien Grasset Noée Dumait

Transition metal nitrides (TMN) form a class of materials with unique physical and chemical properties. Among them, molybdenum nitrides are mainly used as high-performance magnets or catalysts for a wide range of reactions. This work aims at developing innovative syntheses to prepare nanostructured TMN from metallic clusters for heterogeneous catalysis. The use of a nanoscale precursor such as (TBA)2Mo6Br14 (TBA = tetrabutylammonium = (C4H9)4N+) enables us to reach different molybdenum nitride compositions (Mo2N, Mo5N6) by thermal reaction under ammonia at relatively low temperatures. Such a novel synthetic approach highlights the prime importance of the starting material to stabilize specific stoichiometries. The impact of this new synthetic route is characterized by several techniques including electron probe microanalysis and high-resolution transmission microscopy. Moreover, catalytic properties of these potential cost-effective catalysts are investigated for the Water–Gas Shift Reaction.

Stoichiometry

Microanalysis

Molybdenum disulfide

10.1021/acs.chemmater.0c01369

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Citations (12)

Evidence of the Ambipolar Behavior of Mo₆ Cluster Iodides in All-Inorganic Solar Cells: A New Example of Nanoarchitectonic Concept

ACS Applied Materials & Interfaces (2021)

Adèle Renaud Pierre-Yves Jouan Noée Dumait Soraya Ababou‐Girard Nicolas Barreau

Ambipolar materials such as carbon nanotubes, graphene, or 2D transition metal chalcogenides are very attractive for a large range of applications, namely, light-emitting transistors, logic circuits, gas sensors, flash memories, and solar cells. In this work, it is shown that the nanoarchitectonics of inorganic Mo6 cluster-based iodides enable to form thin films exhibiting photophysical properties that enable their classification as new members of the restricted family of ambipolar materials. Thus, the electronic properties of the ternary iodide Cs2[{Mo6I8i}I6a] and those of thin films of the aqua-complex-based compound [{Mo6I8i}I4a(H2O)2a]·xH2O were investigated through an in-depth photoelectrochemical study. Once hole/electron pairs are created, the holes and electrons turn to be transported simultaneously in opposite directions, and their lifetimes exhibit similar values. The ambipolar properties were demonstrated via the integration of [{Mo6I8i}I4a(H2O)2a]·xH2O as light harvesters in an all-solid solar cell. A significant photoresponse with a typical diode characteristic clearly provides evidence of the simultaneous transfer and transport of holes and electrons within the [{Mo6I8i}I4a(H2O)2a]·xH2O layer. The ambipolar behavior results, on the one hand, from the confinement of electrons imposed by the nanometric size of the molecular metal clusters and, on the other hand, from the poor electronic interactions between clusters in the solid state. Such molecular structure-based layers lead naturally to an intrinsic semiconducting behavior.

Ambipolar diffusion

10.1021/acsami.1c17845

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Synthesis of metal cluster from Transparent functional nanocomposite films based on octahedral metal clusters: synthesis by electrophoretic deposition process and characterization

Ngan Nguyen Marion Dubernet Yoshio Matsui Maxence Wilmet Naoto Shirahata

Transparent optical thin films have recently attracted a growing interest for functional window applications. In this study, highly visible transparent nanocomposite films with ultraviolet (UV)-near-infrared (NIR)-blocking capabilities are reported. Such films, composed of Mo6 and Nb6 octahedral metal atom clusters (MC) and polymethylmethacrylate polymer (PMMA), were prepared by electrophoretic deposition on indium tin oxide coated glass (ITO glass). PMMA was found to improve both the chemical and physical stability of Mo6 and Nb6 MCs, resulting in a relatively homogeneous distribution of the clusters within the PMMA matrix, as seen by microstructural observations. The optical absorption spectrum of these transparent MC@polymer nanocomposite films was marked by contributions from their Mo6 and Nb6-based clusters (absorption in the UV range) and from the ITO layer on silica glass (absorption in the NIR range). Mo6@PMMA nanocomposite films also exhibited excellent photoluminescence properties, which were preserved even after exposure to 50°C at a relative humidity of 70% for one month. These films cumulate high transparency in the visible range with remarkable UV-NIR blocking properties and represent interesting candidates for functional glass application.

Electrophoretic Deposition

Indium tin oxide

Thermal Stability

Visible spectrum

10.6084/m9.figshare.7764308.v1

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CCDC 2093023: Experimental Crystal Structure Determination

The Cambridge Structural Database (2021)

Max Ebert I. Carrasco Noée Dumait Wolfgang Frey Angelika Baro

10.5517/ccdc.csd.cc287ywc

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