Article
Chemistry, Multidisciplinary
Fernand Chassagneux, Nelly Couzon, Christophe Place, Mathieu Maillard, Arnaud Brioude, Laurence Bois
Summary: The electrochemical behavior of silver nanoparticles in mesoporous oxide electrodes was investigated. The results showed the importance of Ag+ ion retention by TiO2 films. Two anodic peaks in the voltammetric curves were observed, which could be explained by the presence of two distinct populations of silver nanoparticles with different size distributions in the film.
Article
Chemistry, Multidisciplinary
Hao Lv, Huaiyu Qin, Katsuhiko Ariga, Yusuke Yamauchi, Ben Liu
Summary: We report a general concurrent template strategy for the precise synthesis of mesoporous Pt-/Pd-based intermetallic nanoparticles with desired morphology and ordered mesostructure. This strategy provides a powerful method for the preparation of ordered mesoporous intermetallic nanocrystals suitable for selective catalysis and fuel cell electrocatalysis.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Multidisciplinary
Uiseok Jeong, HyeonJi Kim, Sreerangappa Ramesh, Nesibe A. Dogan, Sirinapa Wongwilawan, Sungsu Kang, Jungwon Park, Eun Seon Cho, Cafer T. Yavuz
Summary: A new and rapid synthetic route for N-doped ordered mesoporous carbon structure was reported by preferential heating of iron oxide nanoparticles by microwaves. The well-defined cubic mesoporous carbon structure showed remarkable improvement in hydrogen desorption kinetics as a host scaffold for NaAlH4, attributed to their ordered pore structure and N-doping effect.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Materials Science, Multidisciplinary
Jinping Yuan, Qianrui Li, Chunmei Yue, Na Wang, Peng Li, Huanrong Li
Summary: By introducing silver clusters into zeolites and modifying the zeolite surface with PEG400, a series of luminescent silver nanoclusters with different emission colors were fabricated. The modification of the EMT zeolite surface with PEG400 improved the luminescence intensity and photoluminescence quantum yields by increasing the hydroxyl functional groups on the surface, promoting the reduction of Ag+ and accelerating the nucleation rate of luminescent silver nanoclusters. The resulting sample had a high photoluminescence quantum yield of 53% and good thermal stability, making it a suitable candidate for replacing traditional phosphors in white lighting applications. The study also demonstrated the potential of luminescent silver nanocluster zeolite composites in developing high-quality phosphors.
JOURNAL OF MATERIALS CHEMISTRY C
(2023)
Review
Chemistry, Multidisciplinary
Lizhi Sun, Hao Lv, Ji Feng, Olga Guselnikova, Yanzhi Wang, Yusuke Yamauchi, Ben Liu
Summary: As second-generation mesoporous materials, mesoporous noble metals (NMs) have wide applications in catalysis, sensing, bioimaging, and biotherapy. This review summarizes recent progress in the design, synthesis, and catalytic applications of NM-based hollow mesoporous nanoparticles (HMNs), including five main synthesis strategies. The applications in ethanol oxidation electrocatalysis and hydrogenation reactions are discussed, highlighting the high activity, enhanced stability, and optimal selectivity of NM-based HMNs in (electro)catalysis. Prospects for further research directions are also provided.
ADVANCED MATERIALS
(2022)
Article
Multidisciplinary Sciences
Hongyue Yu, Wenxing Wang, Minchao Liu, Tiancong Zhao, Runfeng Lin, Mengmeng Hou, Yufang Kou, Liang Chen, Ahmed A. Elzatahry, Fan Zhang, Dongyuan Zhao, Xiaomin Li
Summary: Rare earth-based nanomaterials with abundant characteristics have many applications. This research presents a strategy to introduce mesoporous channels and enhance the performance of rare earth-based nanoparticles. By using a viscosity-mediated assembly method, dendritic mesoporous rare earth-based (DM-REX) nanoparticles with various compositions, sizes, pore sizes, phases, and architectures were successfully synthesized. This versatile method provides a broad platform for the application of rare earth-based nanomaterials with rational designed functions and structures.
Article
Chemistry, Physical
Mioara Prundeanu, Ana-Maria Brezoiu, Mihaela Deaconu, Gratiela Gradisteanu Pircalabioru, Daniel Lincu, Cristian Matei, Daniela Berger
Summary: The study investigated methods to enhance phytochemical stability and antimicrobial activity of extracts by embedding them into mesoporous materials, with assessment on radical scavenger activity and extraction conditions.
Article
Chemistry, Multidisciplinary
Carla Calabrese, Valeria La Parola, Simone Cappello, Annamaria Visco, Cristina Scolaro, Leonarda Francesca Liotta
Summary: Silica, titania, and mixed silica-titania powders were used as supports for loading copper and silver, resulting in nanomaterials with antifouling properties. The titania-based coatings showed better adhesion than silica-based coatings and the commercial topcoat.
Article
Biophysics
Sandra Montalvo-Quiros, Sergio Gomez-Grana, Maria Vallet-Regi, Rafael C. Prados-Rosales, Blanca Gonzalez, Jose L. Luque-Garcia
Summary: Tuberculosis remains a major public health issue with a lack of effective vaccine and the emergence of highly antibiotic-resistant strains of Mycobacterium tuberculosis. Silver nanoparticles show high bactericidal efficacy, but their relatively high toxicity calls for the design of nanocarriers for safe delivery. Mesoporous silica nanoparticles have been used as carriers for silver nanoparticles as antimycobacterial agents, demonstrating good capability against Mtb with different synthetic approaches.
COLLOIDS AND SURFACES B-BIOINTERFACES
(2021)
Article
Pharmacology & Pharmacy
Tais C. Ribeiro, Rafael M. Sabio, Gabriela C. Carvalho, Bruno Fonseca-Santos, Marlus Chorilli
Summary: Neurodegenerative diseases are a public health problem causing cognitive and behavioral impairments. Current drugs can only control symptoms but cannot prevent neural loss. Nanotechnology-based drug delivery systems have been developed to optimize treatment, especially for Alzheimer's and Parkinson diseases.
INTERNATIONAL JOURNAL OF PHARMACEUTICS
(2022)
Article
Chemistry, Multidisciplinary
Sebastian Alberti, Sonja Schmidt, Simone Hageneder, Paula C. Angelome, Galo J. A. A. Soler-lllia, Philipp Vana, Jakub Dostalek, Omar Azzaroni, Wolfgang Knoll
Summary: Nanopores have various applications in biocatalysis, drug delivery, and sensing devices. The interaction between biomacromolecules and surfaces is influenced by nanopore diameter, which is important for their infiltration into porous materials. We present a novel approach for synthesizing large-pore mesoporous silica thin films (MTF) through supramolecular templating and phase separation using block copolymers. The tunability of pore size distribution is achieved through reversible addition-fragmentation chain transfer (RAFT) polymerization.
MATERIALS CHEMISTRY FRONTIERS
(2023)
Article
Chemistry, Physical
Hanane Chaker, Ghaniya Ferouani, Ilyas Chikhi, Mustapha Djennas, Sophie Fourmentin
Summary: This study focuses on optimizing chalcones yield based on elaborated nanomaterials using a new modeling approach in Response Surface Methodology. Palladium nanoparticles supported on mesoporous TiO2 are used as a catalyst, with optimal conditions achieved at a PdNPs concentration of 0.1 wt%, a reaction temperature of 65 degrees C, and a reaction time of 40 min. The adjusted coefficient of determination indicated a suitable model, and the catalyst could be reused multiple times without a decrease in activity, demonstrating the efficiency of the approach.
COLLOID AND INTERFACE SCIENCE COMMUNICATIONS
(2021)
Article
Chemistry, Multidisciplinary
Irene Calderon, Ramon A. Alvarez-Puebla, Nicolas Pazos-Perez
Summary: This method achieves particles composed of a segregated alloy of silver coated with gold by controlled Ostwald ripening of small gold nanoparticles on the surfaces of larger silver particles. The prepared segregated nanoalloyed colloids combine the advantages of both gold and silver without their drawbacks.
Review
Chemistry, Multidisciplinary
Yabin Wang, Baoliang Zhang, Xiuping Ding, Xin Du
Summary: Dendritic mesoporous organosilica nanoparticles (DMONs) with unique structural features and biocompatibility have gained increasing attention and development in biochemical applications in recent years.
Article
Multidisciplinary Sciences
Yuzhu Ma, Hongjin Zhang, Runfeng Lin, Yan Ai, Kun Lan, Linlin Duan, Wenyao Chen, Xuezhi Duan, Bing Ma, Changyao Wang, Xiaomin Li, Dongyuan Zhao
Summary: In this study, a nanodroplet remodeling strategy is proposed for the synthesis of hierarchical multi-chambered mesoporous silica nanoparticles with tunable architectures. The dual-chambered nanoparticles have a high surface area and two interconnected cavities, allowing for separate anchoring of multiple species without mutual interference. Additionally, the dual-chambered mesoporous nanoreactors prepared using this strategy exhibit efficient mass transfer, leading to improved selectivity of the target product.
NATURE COMMUNICATIONS
(2022)
Article
Chemistry, Multidisciplinary
Antonio Carone, Pablo Mariani, Anthony Desert, Marco Romanelli, Jacopo Marcheselli, Marco Garavelli, Stefano Corni, Ivan Rivalta, Stephane Parola
Summary: Chiral plasmonic nanomaterials have promising applications. This study expands the range of available chiral plasmonic nanostructures and proposes the importance of the outer part of the nanoparticles shell on plasmonic circular dichroism.
Article
Energy & Fuels
Quentin Touloumet, Georgeta Postole, Lishil Silvester, Laurence Bois, Aline Auroux
Summary: The study investigates the use of aluminum fumarate - porous alumina as a host matrix for CaCl2-based composite sorbents for thermochemical heat storage applications. The results show that the hierarchical porous structure impacts the physico-chemical characteristics and water storage performances, with enhanced capacity in the presence of micropores and mesoporosity. CaCl2-AF/Al composites exhibit increased water and heat storage capacities with higher salt content, reaching 1930 kJ kg(-1) and 0.68 kgH(2)O kg(-1) for 61 wt% of salt. The study highlights the significant impact of salt content on storage capacity and the influence of porosity on water vapor sorption behavior.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Nanoscience & Nanotechnology
Denis Chateau, Sylvain David, Gerard Berginc, Cesar Lopes, Frederic Chaput, Frederic Lerouge, Anthony Desert, Chantal Andraud, Stephane Parola
Summary: The use of lasers in various fields requires efficient optical protections for safety. Nonlinear optical limiting is considered the most versatile and efficient technology. This research focuses on the development of efficient NIR optical filters using azabodipy dyes and plasmonic nanoparticles in sol-gel monoliths.
ACS APPLIED NANO MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Mateusz Odziomek, Fanny Thorimbert, Cedric Boissiere, Glenna L. Drisko, Stephane Parola, Clement Sanchez, Marco Faustini
Summary: In this work, a crack formation technique is used to pattern porous inorganic films, allowing for the creation of periodic structures and sub-surface patterns of various inorganic materials. The method offers a cost-effective and efficient way to achieve advanced functionality in various applications.
ADVANCED MATERIALS
(2022)
Article
Biochemical Research Methods
Marlene Wiart, Clement Tavakoli, Violaine Hubert, Ines Hristovska, Chloe Dumot, Stephane Parola, Frederic Lerouge, Fabien Chauveau, Emmanuelle Canet-Soulas, Olivier Pascual, David P. Cormode, Emmanuel Brun, Helene Elleaume
Summary: The activation of phagocytic cells is important in neurological diseases, and tracking them in the brain using MRI and CT can help understand their role and monitor therapeutic effects. Metal-based contrast agents like gadolinium, gold, and iron can be used for tracking phagocytic cells, but they may have toxicity and accumulation issues. Despite these challenges, early results in patients with neurological diseases are promising.
JOURNAL OF NEUROSCIENCE METHODS
(2023)
Article
Nanoscience & Nanotechnology
Yujiao Zhou, Gilles Ledoux, David Philippon, Sylvie Descartes, Matteo Martini, Shaozhou He, Cedric Desroches, Didier Fournier, Catherine Journet, Laurence Bois
Summary: Photoluminescent temperature sensors based on gadolinium orthovanadate (GdVO4) doped with ytterbium and erbium were developed and dispersed in different media for temperature measurement. The luminescence intensity ratio of thermally coupled erbium emission peaks varies linearly with temperature and can be corrected for laser-induced thermal effects.
ACS APPLIED NANO MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Fernand Chassagneux, Nelly Couzon, Christophe Place, Mathieu Maillard, Arnaud Brioude, Laurence Bois
Summary: The electrochemical behavior of silver nanoparticles in mesoporous oxide electrodes was investigated. The results showed the importance of Ag+ ion retention by TiO2 films. Two anodic peaks in the voltammetric curves were observed, which could be explained by the presence of two distinct populations of silver nanoparticles with different size distributions in the film.
Article
Chemistry, Multidisciplinary
Yige Yan, Adel Mesbah, Lhoussain Khrouz, Corinne Bouillet, Chantal Lorentz, Nicholas Blanchard, Anne C. Berends, Marie Anne van de Haar, Frederic Lerouge, Michael R. Krames, Ovidiu Ersen, Frederic Chaput, Stephane Parola
Summary: In this paper, the synthesis of ultra-small YPO4-YAG:Ce nanocomposite phosphor particles with high quantum yield (QY) of 53% and a particle size of approximately 10 nm is reported. The localization of phosphate and extra yttrium entities with respect to cerium centers in the YAG host has been determined using fine structural analysis techniques. The correlation between the additive-induced physico-chemical environment change around cerium centers and the increasing photoluminescence performance has been suggested based on experimental data and crystallographic simulation studies.
Article
Materials Science, Multidisciplinary
Antonio Carone, Pablo Mariani, Anthony Desert, Stephane Parola
Summary: Investigated the assembly of chiral plasmonic particles without using a chiral templating agent. Chiral core-shell Au@Ag and Au@Au particles were assembled in a controlled way by lowering the surfactant concentration in solution. The assembly led to pseudo-linear structures revealed by electron microscopy, and the plasmonic responses were characterized by circular dichroism (CD) and UV-Vis-NIR spectroscopies.
ADVANCED OPTICAL MATERIALS
(2023)
Article
Radiology, Nuclear Medicine & Medical Imaging
Sara Boccalini, Riham Dessouky, Pierre-Antoine Rodesch, Hugo Lacombe, Yoad Yagil, Elias Lahoud, Klaus Erhard, Bernhard Brendel, Philippe Coulon, Jean-Baptiste Langlois, Frederic Chaput, Stephane Parola, Loic Boussel, Frederic Lerouge, Salim Si-Mohamed, Philippe C. Douek
Summary: The feasibility of gadolinium-K-edge-angiography (angio-Gd-K-edge) with gadolinium-based contrast agents (GBCAs) using spectral photon counting CT (SPCCT) was investigated in atherosclerotic rabbits. The study showed that angio-Gd-K-edge allowed visualization of target vessels and reliable measurement of their diameters.
DIAGNOSTIC AND INTERVENTIONAL IMAGING
(2023)
Article
Chemistry, Physical
Jakub Kusz, Cedric Boissiere, Dris Ihiawakrim, Ovidiu Ersen, Clement Sanchez, Stephane Parola
Summary: This study focuses on the molecular-level understanding of the self-assembling processes in hybrid mesoporous films using model precursors. Ordered mesoporous silica thin films are prepared by the co-condensation sol-gel process, with the use of an ionic surfactant as a template. The influence of parameters such as alkyl chain length, concentration, and relative humidity on the film mesostructure is evaluated, and the relationship between these parameters and the mesophase arrangement, pore size distribution, porosity, and Young's modulus is established.
CHEMISTRY OF MATERIALS
(2023)
Article
Chemistry, Physical
Yujiao Zhou, Gilles Ledoux, Laurence Bois, Sylvie Descartes, Nathalie Bouscharain, Fernand Chassagneux, Matteo Martini, Yamaldi Midiladji Bakary, Catherine Journet, David Philippon
Summary: Non-contact temperature measurement at the nanoscale by photoluminescence using a nano-sensor in a confined fluid has been achieved in this study. Upconversion lanthanide-doped nanoparticles were utilized as a self-referenced nanosensor for ratiometric thermometry. The synthesized Gadolinium orthovanadate (GdVO4) nanoparticles doped with Yb3+ and Er3+ were dispersed in an ester-based fluid. The results showed that the dispersed NP suspension allowed luminescence intensity ratio (LIR) thermometry up to 473 K with a relative sensitivity of 1.17% K-1 using a NIR laser.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
Article
Biotechnology & Applied Microbiology
Frederic Lerouge, Elodie Ong, Hugo Rositi, Francis Mpambani, Lise-Prune Berner, Radu Bolbos, Cecile Olivier, Francoise Peyrin, Vinu K. Apputukan, Cyrille Monnereau, Chantal Andraud, Frederic Chaput, Yves Berthezene, Bettina Braun, Mathias Jucker, Andreas K. O. Aslund, Sofie Nystrom, Per Hammarstrom, K. Peter Nilsson, Mikael Lindgren, Marlene Wiart, Fabien Chauveau, Stephane Parola
Summary: Aim: This study aimed to propose and evaluate a new multimodal imaging agent targeting amyloid-beta (A beta) plaques in Alzheimer's disease using various imaging techniques. Materials & methods: A new generation of hybrid contrast agents was designed and extensively characterized, and animal models of Alzheimer's disease were used for evaluation through MRI, two-photon microscopy, and synchrotron x-ray phase-contrast imaging. Results & conclusion: The study achieved two different grafting densities of luminescent-conjugated polythiophene while maintaining colloidal stability and fluorescent properties. In vivo brain uptake depended on the blood-brain barrier status. Nevertheless, successful A beta targeting was observed in both transgenic mice and A beta fibril-injected rats through multimodal imaging.
Article
Chemistry, Multidisciplinary
Antonio Carone, Samuel Emilsson, Pablo Mariani, Anthony Desert, Stephane Parola
Summary: This study aimed to understand and predict the colloidal stability of colloidal gold nanostructures composed of AuNPs and CTAB. It was found that the shape of nanoparticles had an impact on the overall stability, with the presence of sharp tips being the source of instability. A metastable area was systematically observed in the stability diagrams, where the system aggregated in a controlled way while maintaining colloidal stability. By combining strategies and using transmission electron microscopy, the behavior of the system in different zones of the diagrams was investigated. Linear structures with good control over the number of particles participating in the assembly and good colloidal stability were obtained by controlling the experimental conditions with the previously obtained diagrams.
NANOSCALE ADVANCES
(2023)
Article
Chemistry, Multidisciplinary
Van Doan Le, Yaya Lefkir, Nathalie Destouches
Summary: Laser-induced self-organized plasmonic metasurfaces exhibit hybridized plasmonic and photonic modes. Even with the irregularities in nanoparticle size distribution and positional disorder, the resulting nanostructures show strong coupling between plasmonic and photonic modes. Controlling the statistical properties of plasmonic metasurfaces allows for reproducible control of hybridization mechanisms and their optical properties.
