Cedric Boissiere

Sorbonne Université | UPMC · Laboratoire de Chimie de la Matière Condensée de Paris (LCMCP)

The emission of polar volatile organic compounds (VOCs) is a major worldwide concern of air quality and equally impacts the preservation of cultural heritage (CH). The challenge is to design highly efficient adsorbents able to selectively capture traces of VOCs such as acetic acid (AA) in the presence of relative humidity (RH) normally found at sto...

In modern laser technologies, there is a need for coatings that would be compatible with flexible substrates while retaining the advantages of inorganic compounds in terms of robustness. As a first step in this direction, we developed here thin films of lanthanide oxysulfide, of optical quality, prepared by low-temperature dip coating. As a model c...

High-entropy-alloy (HEA) nanoparticles are attractive for several applications in catalysis and energy. Great efforts are currently devoted to establish composition-property relationships to improve catalytic activity or selectivity. Equally importantly, developing practical fabrication methods for shaping HEA-based materials into complex architect...

Solution‐processed inorganic nanoporous films are key components for the vast spectrum of applications ranging from dew harvesting to solar cells. Shaping them into complex architectures required for advanced functionality, often need time‐consuming or expensive fabrication. In this work, we show how crack formation is harnessed to pattern porous i...

Nanoparticles of metal–organic frameworks (MOF NPs) are crystalline hybrid micro- or mesoporous nanomaterials that show great promise in biomedicine due to their significant drug loading ability and controlled release. Herein, we develop porous capsules from aggregate of nanoparticles of the iron carboxylate MIL-100(Fe) through a low-temperature sp...

One of today’s major world challenges is the accumulation and the storage of tens of millions of tons per year of final materials resulting from the incineration of domestic and industrial waste. This raises the question of the recycling of these “raw materials”, while making allowance for environmental, economic, social and public health aspects....

Worldwide cooling energy demands will increase by four times by 2050. Thermally driven cooling technology is an alternative solution to electric heat pumps in removing hazardous refrigerants and harnessing renewables and waste heat. We highlight the advantages of water-stable microporous aluminum-carboxylate-based metal-organic frameworks, or Al-MO...

Noble metal nanostructured films are of great interest for various applications including electronics, photonics, catalysis, and photocatalysis. Yet, structuring and patterning noble metals, especially those of the platinum group, is challenging by conventional nanofabrication. Herein, an approach based on solution processing to obtain metal-based...

Due to their high porosity and chemical versatility, metal–organic frameworks (MOFs) exhibit physical properties appealing for photonic‐based applications. While several MOF photonic structures have been reported, examples of applications thereof are mainly limited to chemical sensing. Herein, the range of application of photonic MOFs is extended t...

The development of supported glycosylated lipid layers is an important trend in the field of glyconanomaterials for their interest in understanding sugar-sugar and protein-sugar interactions, these being at the core of cellular, bacterial or viral adhesion. The conventional self-assembled monolayer (SAM) approach generally requires a thiolated glyc...

Surface engineering of metal-organic frameworks (MOFs) with a mesoporous silica coating can improve MOF mechanical properties and provide an easy way to decorate MOF nanoparticles with organic or biological molecules though silane chemistry or electrostatic interactions, while retaining open access to MOF porosity. Silica coating would be highly be...

Surface engineering of metal-organic frameworks (MOFs) with a mesoporous silica coating can improve MOF mechanical properties and provide an easy way to decorate MOF nanoparticles with organic or biological molecules though silane chemistry or electrostatic interactions, while retaining open access to MOF porosity. Silica coating would be highly be...

The invention relates to a method for forming at least one periodic array of cracks of an inorganic micropatterned coating, wherein each crack of said at least one periodic array of cracks extends over the substrate along an axis following a linear direction, each axis of each crack being parallel to the axis of the other cracks. The invention also...

Combining high activity and stability, iridium oxide remains the gold standard material for the oxygen evolution reaction in acidic medium for green hydrogen production. The reasons for the higher electroactivity of amorphous iridium oxides compared to their crystalline counterpart is still the matter of an intense debate in the literature and, a c...

Biological tissues rich in type I collagen exhibit specific hierarchical fibrillar structures together with remarkable mechanical toughness. However, the role of collagen alone in their mechanical response at different structural levels is not fully understood. Here, it is proposed to rationalize such challenging interplay from a materials science...

Metal-assisted chemical etching (MACE) has emerged as an effective method to fabricate high aspect ratio nanostructures. This method requires a catalytic mask that is generally composed of a metal. Here, we challenge the general view that the catalyst needs to be a metal by introducing oxide-assisted chemical etching (OACE). We perform etching with...

Surface engineering of metal-organic frameworks (MOFs) with a mesoporous silica coating can improve MOF mechanical properties and provide an easy way to decorate MOF nanoparticles with organic or biological molecules...

Engineering the photothermal effect in plasmonic materials is of paramount importance for many applications such as cancer therapy, chemical synthesis, cold catalysis and more recently for metasurfaces. Evaluation of plasmonic heating at the nanoscale is challenging and generally requires sophisticated equipments and/or temperature-sensitive probes...

Mesoporous silica nanoparticles (MSNs) have seen a fast development as drug delivery carriers thanks to their tunable porosity and high loading capacity. The employ of MSNs in biomedical applications requires a good understanding of their degradation behavior both to control drug release and to assess possible toxicity issues on human health. In th...

Porous noble metal nanostructures providing high surface areas and large pore volumes are attractive for numerous applications especially catalysis. However, the synthesis of such architectures with nanoscale features is challenging because of i.e high surface energy. Previous reports are based on multi-step synthetic approaches with low yield thus...

In article number 1902224, Bernard Coulomb, Nadine Nassif, and co‐workers propose an innovative spray‐processing approach, allowing fast and cheap production of highly concentrated, self‐assembled type I collagen microparticles. The native properties of collagen are preserved, further enabling the encapsulation of therapeutic biomolecules and their...

The invention relates to a method for manufacturing a thin film of ordered silicon nanopatterns including the steps of: A) preparing a self-organised reactive nanomask (RNM) consisting of MxM'yOz, referred to as an initial RNM, using an inorganic nanomask INP; B) the liquid deposition of said initial RNM onto a silicon substrate; C) transferring sa...

In the field of heterogeneous catalysis, the successful integration of enzymes and inorganic catalysts could pave the way to multifunctional materials which are able to perform advanced cascade reactions. However, such combination is not straightforward, for example in the case of zeolite catalysts for which enzyme immobilization is restricted to t...

Extracellular matrices (ECM) rich in type I collagen exhibit characteristic anisotropic ultrastructures. Nevertheless, working in vitro with this biomacromolecule remains challenging. When processed, denaturation of the collagen molecule is easily induced in vitro avoiding proper fibril self‐assembly and further hierarchical order. Here, an innovat...

Organic−inorganic hybrid mesostructured silicas are prepared, without stirring (at pH = 0.0) and with stirring (at pH = 0.6) to obtain isolated and gyroidal-like attached silica grains with incorporated triblock P123 poly (ethylene oxide)-poly (propylene oxide)–poly (ethylene oxide) copolymers. Selected hybrids are submitted to various thermal and...

Herein is reported the preparation of nanostructured mesoporous supported films, in this case titanium dioxide nanoparticles on silicon wafer, according to a new approach taking place in two consecutive deposition steps: i) coating of a homogeneous and continuous layer of a surfactant on the selected support, and ii) building-up of a second layer o...

A strategy is presented to deposit defined layers of TiO2 onto the pore surface within ordered mesoporous, crystalline CeO2-ZrO2 thin films using atomic layer deposition (ALD). As structure-directing agent a special diblock copolymer was used, poly(isobutylene)-block-poly(ethylene oxide) (PIB50-b-PEO45), resulting in a 3D arrangement of spherical p...

Mesoporous TiO2 materials have been prepared by an aerosol process, which leverages on the acetic acid-mediated sol-gel chemistry and on the evaporation-induced self-assembly of surfactants to obtain materials with high specific surface area and large mesoporous volume. The obtained spherical particles are calcined to release the porosity. It is sh...

We report a method to prepare patterned mesoporous silica-based films with a fine control of the pore sizes and the porous fraction by combining the sol gel approach with an alkali ion post-treatment. Strategy involves the porous mesostructure reconstruction of surfactant (CTAB or F127) templated silica films by alkali metal ions diffusion into the...

div>Mesoporous TiO₂ materials have been prepared by an aerosol process, which leverages on the acetic acid-mediated sol-gel chemistry and on the evaporation-induced self-assembly phenomenon to obtain materials with high specific surface area and large mesoporous volume. The obtained spherical particles are calcined to release the porosit...

div> Integrating enzymatic and heterogeneous catalysis can pave the way to new and performing cascade chemical processes. In this perspective, the preparation of bifunctional structures combining both an active inorganic catalyst and an enzyme is a key. However, such combinations are not straightforward, for example in the case of zeolite catalyst...

Iridium oxide is the gold‐standard catalyst for the oxygen evolution reaction (OER) in acidic media due to its unmatched activity and stability. Here, a new catalyst architecture comprising a nanoneedle network of iridium‐containing oxides assembled into macroporous micrometric particles with ≈75% of porosity is reported. The rationally designed po...

Herein, we present the aerosol-assisted sol-gel preparation of hierarchically porous TiO2–SiO2 catalysts having a sphere-like shell morphology and a high Ti dispersion. In order to control the porosity at the micro-, meso- and macro- levels, we use the evaporation-induced self assembly (EISA) of a surfactant, possibly combined with polymer beads as...

In article number 1802136 Cédric Boissière, Cédric Tard, Jennifer Peron and co‐workers present the synthesis of ultra porous nanostructured iridium‐based microspheres using a cheap and easily scalable water‐based process. These hierarchical catalysts are active and stable towards the oxygen evolution reaction. They are easily processed to make perc...

The invention relates to a porous material in the form of iridium and/or iridium oxide based microspheres, the preparation method thereof, the use thereof as an anode catalyst in a water electrolyserbased on a solid polymer electrolyte, also called PEM ("Proton Exchange Membrane" or "Polymer Electrolyte Membrane") water electrolyser, or for manufac...

This paper presents the interest of a highly sensitive biosensor coated with a TiO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> mesoporous film as a sensitive layer. The main novelty is related to the modeling of the device and simulation by using the finite element method with a COMSOL mult...

The invention relates to the field of forensics and relates more particularly to a composition for revealing latent fingerprints, a method for revealing latent fingerprints on a substrate and a kit for revealing latent fingerprints. In particular, according to the invention, latent fingerprints can be revealed using fluorescent compounds of the fam...

The stabilization of crystal phases and nanostructured morphologies is an essential topic in application‐driven design of mesoporous materials. Many applications, e.g. catalysis, require high temperature and humidity. Typical metal oxides transform under such conditions from a metastable, low crystalline material into a thermodynamically more favor...

Aerosol processing technologies represent a major route of innovation in the mushrooming field of heterogeneous catalysts preparation.

Herein we show that wetting properties such as Giant Wetting Anisotropy and dynamic shaping can be observed when femtoliter (sub-micron scale) dew droplets are condensed on nanopatterned midly hydrophilic surfaces. Large scale, optically transparent, nanopatterned TiO2 surfaces were fabricated by direct nano-imprinting lithography of sol-gel derive...

The invention relates to a process for manufacturing a porous material comprising the following steps of providing incineration clinkers, providing an aqueous binder solution comprising at least one inorganic binder and/or at least one organic-inorganic hybrid binder, mixing said clinkers with said aqueous binder solution comprising at least one in...

Herein, a straightforward crack-patterning method is reported allowing the direct formation of periodic cracks in Metal-Organic Framework nanoparticles films during dip-coating deposition. The crack propagation and periodicity can be easily tailored by controlling the evaporation front and the withdrawal speed. Several MOF patterned films can be fa...

The new rapid scan method, Flyscan mode, implemented on the DiffAbs beamline at Synchrotron SOLEIL, allows fast micro-X-ray fluorescence data acquisition. It paves the way for applications in the biomedical field where a large amount of data is needed to generate meaningful information for the clinician. This study presents a complete set of data a...

Herein, a straightforward crack-patterning method is reported allowing the direct formation of periodic cracks in Metal-Organic Framework nanoparticles films during dip-coating deposition. The crack propagation and periodicity can be easily tailored by controlling the evaporation front and the withdrawal speed. Several MOF patterned films can be fa...

The performance of Proton Exchange Membrane Electrolyzers (PEMWE) is mostly impeded by the efficiency of the anode catalysts allowing for the Oxygen Evolution Reaction (OER) to occur. New catalytic materials should possess at least as high performance and stability as state of the art materials, since the price of electrolysis is mostly impacted by...

Humidity is an efficient instrument for facilitating changes in local architectures of 2-dimensional surfaces assembled from nanoscaled biomaterials. Here, complementary surface-sensitive methods are used to collect explicit and precise experimental evidence on the water vapor sorption into (2,2,6,6-tetramethylpiperidin-1-yl)oxyl (TEMPO) oxidized c...

Dip-coating is a common liquid deposition technique employed in research, but also for industrial production, to obtain polymer, hybrid and inorganic thin layers of controlled thickness. During liquid deposition, the substrate withdrawal speed allows in principle an easy tuning of deposited film thickness (first modeled by Landau and Levich). Yet,...

The invention relates to a method for producing a material with a large specific surface, comprising a step of atomising a liquid composition based on liquid residues from a chemical extraction of clinker, to a material based on clinker residues, characterised by a large specific surface of between 200 m2.g-1 and 900m2.g-1 and a mesopore size of be...

The appearance of structural colors on coated-glass is a critical esthetical drawback toward industrialization of photocatalytic coatings on windows for architecture or automobile. Herein we describe a rational approach to suppress the structural color of mesoporous TiO2-based coatings preserving photoactivity and mechanical stiffness. Addition of...

Mesoporous thin films were prepared by dip-coating with a purely aqueous method, as a substitute for the alcohol-based evaporation-induced self-assembly route. Unlike other aqueous routes that require a very slow pulling rate possible only using high performance dip-coaters, as a result of the high surface tension of water, this new process works w...

Despite increasing interest in metal-organic frameworks (MOFs) in the biomedical field, developing specific formulations suitable for different administration routes is still a main challenge. Here, we propose a simple, fast and bio-friendly press-molding method for the preparation of cutaneous patches based on composites made from the drug nanocar...

Thin films are now used in several fields, such as coating, sensors, material tuning. Yet, the determination of mechanical parameters of these films is still a challenge and most of the characterization methods are electromagnetic or electric. In previous works, it has been shown that the transmission spectrum is very sensitive to etching. In this...

New fluorescent molecular liquids with a tetrazine core have been prepared. These compounds remain liquid at least down to -60°C and display very low viscosities (28 m.Pa.s for liquid 1, 58 mPa.s for liquid 2). Both compounds remain fluorescent in the condensed phase. For liquid 1 intermolecular quenching is observed to a certain extent whereas liq...

In this manuscript, we present a new strategy for the direct synthesis of functional nano-composite hybrid therapeutic vectors. The smart coupling of soft-chemistry and “ouzo effect” based emulsification processing allows us to create in a very simple way a Pickering stabilized emulsion from various prodrug modelling molecules used as a core, and s...

Research on nanomaterials and nanostructured materials is burgeoning because their numerous and versatile applications contribute to solve societal needs in the domain of medicine, energy, environment and STICs. Optimizing their properties requires in-depth analysis of their structural, morphological and chemical features at the nanoscale. In a tra...

In this work, a soft-lithographic approach to fabricate submicrometer metal organic framework (MOF)-based 2D photonic structures is described. Nanometric zeolitic imidazole framework material ZIF-8 (zinc) is chosen as the sensible MOF material because of its chemical stability and its vapor selective adsorption properties. Two different systems are...

In the last few years, European papermaking has been following a clear trend to develop new markets and functionalities for paper to keep its production capacities and profitability. “Air depollution” papers are a good example as they perfectly match some market needs such as cleaning the air inside houses or trade fairs that are always more and mo...

This chapter focuses on chemical liquid deposition methods that involve controlled covering of surfaces with a chemical liquid solution, the sol-gel solution, of known composition. The techniques include dip coating, spin coating, roll-to-roll coating, droplet-assisted deposition and electro-assisted deposition. The chapter presents briefly the dif...

A new type of acidic macrocellular and mesoporous silica-alumina foam is obtained via a one pot alkaline sol-gel route coupled with a concentrated emulsion-based templating technique. The mixed oxide monolith exhibits high surface acidity, translating in excellent performance in the acid-catalyzed dehydration of bioethanol to ethene.

Although gold nanoparticles stabilized by organic thiols are the building blocks in a wide range of applications, the role of the ligands on the plasmon resonance of the metal core has been mostly left aside up to now. Herein, a methodology based on the combination of spectroscopic ellipsometry and UV-visible spectroscopy is applied to extract diel...

Within the list of the different technologies developed to provide “clean” alternative energy in the future, Concentrated Solar Power systems (CSP), transforming sunlight radiation into thermal or electrical power, are serious candidates. However, some of the main critical issues to the sucess of the industrial CSP are the solar-to-thermal and the...

Significance Therapeutic and diagnostic nanoparticles combine multiple functionalities to improve efficacy of treatment but often require assembling complex systems at the expense of overall performance. Here we present a simple strategy to synthesize a hybrid, rattle-like, gold–silica nanoparticle that very efficiently combines therapy and imaging...

Complex 3D macrostructured nanoparticles are transformed from amorphous silica into pure polycrystalline α-quartz using catalytic quantities of alkaline earths as devitrificants. Walls as thin as 10 nm could be crystallized without losing the architecture of the particles. The roles of cation size and the mol% of incorporated devitrificant on cryst...

Love wave sensors coated with mesoporous sensitive layers have shown good sensitivity and short-time response for volatile organic compounds (VOCs) and heavy metal detection. This chapter describes the Love wave device. The Love wave sensing principle is based on the perturbation of a guided shear horizontal surface acoustic wave. The chapter then...

In this work, we report the condensation and stabilization of water vapors into water-repellent, methyl-functionalized, mesoporous, silica-based films at room temperature and atmospheric pressure using a soft alcohol-assisted method. The capillary pore fillings due to water adsorption were ensured by a fine control of partial vapor pressures of alc...

This review describes the main successful strategies that are used to grow mesostructured nanocrystalline metal oxide and SiO2 films via deposition of sol–gel derived solutions. In addition to the typical physicochemical forces to be considered during crystallization, mesoporous thin films are also affected by the substrate–film relationship and th...

Quartz has been widely used as a bulk material in optics, the microelectronic industry, and sensors. The nanostructuring and direct integration of oriented quartz crystals onto a semiconductor platform has proven to be challenging. However, here, a new approach is presented to integrate epitaxial quartz films with macroperforations within the range...

In this work, unique functional devices exhibiting controlled gradients of properties are fabricated by dip-coating process in acceleration mode. Through this new approach, thin films with "on-demand" thickness graded profiles at sub-millimeter scale are prepared in an easy and versatile way, compatible for large-scale production. The technique is...

Spectroscopic ellipsometry was utilized to follow in situ the photodegradation of organic species at TiO2 interfaces during UV irradiation in real operating conditions. Mesoporous crystalline TiO2 thin films were used as photoactive catalyzers, while lauric acid was used as the model pollutant. After infiltration of lauric acid in the TiO2 film, th...