Article
Biochemistry & Molecular Biology
Fozia Iram, Abida Yasmeen, Shazma Massey, Mohammad S. Iqbal, Sumreen Asim, Misbah Irshad, Hina Zahid, Athar Y. Khan, Syed G. T. Kazimi
Summary: Gold and silver nanoparticles were successfully synthesized using arabinoglucan from Lallemantia royleana seeds, showing high stability without the need for additional reducing or stabilizing agents. The nanoparticles exhibited excellent optical properties, with potential applications in surface-enhanced Raman spectroscopy. Silver nanoparticles demonstrated dose-dependent biological activities, including cytotoxicity against brine shrimps, HeLa cell lines, and tumors caused by A. tumefaciens.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2021)
Article
Chemistry, Multidisciplinary
Sourav Biswas, Anish Kumar Das, Akashdeep Nath, Souradip Paul, M. Suheshkumar Singh, Sukhendu Mandal
Summary: This study investigates a newly synthesized silver cluster assembled material and demonstrates the correlation between its structure and properties, showing how a multifunctional surface protecting ligand is strategically attached to enhance solubility, structural stability, and charge transfer mechanism. The material exhibits high structural stability, sustainable photoresponsive character, and unprecedented water solubility, making it suitable for biomedical imaging applications. The material's ability to mimic blood vessels at a depth of approximately 3 mm inside chicken breast tissue was confirmed by measured photoacoustic signal strength.
Article
Engineering, Electrical & Electronic
Nirgaman Bage, Pradip Kar
Summary: The study investigated the influence of silver nanoparticles labeled with biomolecules on electrochemical sensing, showing that AgNP labeled layers can serve as ultrasensitive detectors for detecting biotin-avidin couple and sensing concentration changes even at higher concentrations.
IEEE SENSORS JOURNAL
(2021)
Article
Chemistry, Inorganic & Nuclear
Sahidul Mondal, Koushik Sarkar, Pradyut Ghosh
Summary: A series of new bis-heteroleptic Ru(II) probes were used in a comparative study for the selective detection of H2PO4-, with 1[PF6](2) and 7[PF6](2) found to be superior in terms of MLCT-M-3 emission enhancement, binding constant, and detection limit, possibly due to better supramolecular aggregation properties.
INORGANIC CHEMISTRY
(2021)
Article
Polymer Science
Miriam Khodeir, He Jia, Alexandru Vlad, Jean-Francois Gohy
Summary: This study demonstrates the successful application of redox-responsive hydrogels in releasing active molecules or acting as catalysts. By electrochemically triggering the release of aspirin and oxidizing primary alcohols into aldehydes, the potential of these hydrogels is showcased.
Article
Chemistry, Analytical
Maria Andrea Molina Torres, Alicia Viviana Veglia, Natalia Lorena Pacioni
Summary: The method developed in this study utilizes the fluorescence quenching of rhodamine-6G to quantify gold and silver nanoparticles in aqueous systems. Validation through recovery tests in spiked drinking and surface river water demonstrated the accuracy and reliability of the method, making it a rapid and cost-effective approach for analyzing metal nanoparticles.
MICROCHEMICAL JOURNAL
(2021)
Article
Materials Science, Multidisciplinary
Cheng Hung Chu, Gu Yu Lin, Pin Chieh Wu, Wei-Yang Chou, Sy-Hann Chen, Hsing-Chih Liang, Hai -Pang Chiang
Summary: This study proposes an innovative plasmonic sensing method using MIM nanohole arrays and AgNPs to measure refractive index changes in the surrounding medium. The hybrid substrates prepared using a combination of NSL, reactive ion etching, and plasmonic site-selective photocatalytic reaction show potentials for optical sensing applications.
RESULTS IN PHYSICS
(2023)
Article
Chemistry, Multidisciplinary
Maurice Retout, Bryan Gosselin, Amina Adrovic, Pascale Blond, Ivan Jabin, Gilles Bruylants
Summary: In this study, a thin and robust coating based on calixarene-diazonium salts was developed to maintain the anisotropic structure of silver nanoplates, resulting in increased lifetime and stability. This coated silver nanoplates were then used for the detection of rabbit immunoglobulin G and Anti-SARS-CoV-2 IgG, achieving a low limit of detection and successful detection in human plasma. Additionally, the wide range of colors provided by the silver nanoplates allowed for the design of a multicolor multiplex assay for simultaneous detection of multiple analytes.
Article
Chemistry, Analytical
Fuxin Liu, Rong Yu, Hongwei Wei, Jinsheng Wu, Nan He, Xiuhui Liu
Summary: This study presents a novel non-enzymatic electrochemical sensor for detecting superoxide anions in biological systems, showing excellent performance and wide application prospects. The research also explores the impact of temperature on the release of superoxide anions from living cells and enzyme activity for the first time, providing crucial insights into understanding the effects of temperature on organisms and treating diseases caused by oxidative stress.
ANALYTICA CHIMICA ACTA
(2022)
Article
Environmental Sciences
Hongbo Peng, Huiyuan Guo, Peng Gao, Yuwei Zhou, Bo Pan, Baoshan Xing
Summary: This study investigated the formation mechanisms of silver nanoparticles (AgNPs) when Ag+ coexists with biomasses (BMs) and biochars (BCs). Different types of BMs and BCs were found to play different roles in transforming Ag+ to AgNPs, with temperature and pH having significant impact on the process. The results illustrate the importance of hydroxyl (-OH) groups in BMs and BCs for the reduction of Ag+ and the subsequent formation of AgNPs in the environment.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Materials Science, Multidisciplinary
Christopher B. Keller, Julia S. Siqueira, Scott M. Grayson
Summary: This study expands upon previous work on amphiphilic-grafted nanoparticles and investigates their oil encapsulation properties through UV and DSC analysis. The results suggest that these nanoparticles can encapsulate a significant amount of crude oil and do not have a critical micelle concentration.
ACS APPLIED POLYMER MATERIALS
(2021)
Article
Chemistry, Physical
Hirak Chatterjee, Dorothy Bardhan, Sudip Kumar Pal, Keiji Yanase, Sujit Kumar Ghosh
Summary: A retrospective formalism has been designed through critical condensation of electromagnetic scattering theories, macroscopic mixing rules, and micromechanics at the metal-analyte interface, which can be adopted as a generalized model.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2021)
Article
Chemistry, Multidisciplinary
Atul Kumar Tiwari, Hari Prakash Yadav, Munesh Kumar Gupta, Roger J. J. Narayan, Prem C. C. Pandey
Summary: A highly fluorescent, sensitive, and selective fluorometric assay for detecting Hg2+ ions was developed using vancomycin functionalized and polyethyleneimine stabilized gold nanoparticles (PEI-f-AuNPs@Van). The gold nanoparticles exhibited strong fluorescence properties with excitation and emission wavelengths of 320 nm and 418 nm, respectively. The detection limit for Hg2+ ion was determined to be 0.988 nM within a linear range, while in natural environmental samples it was 12.5 nM. The designed probe showed high selectivity for mercury (II) cations among other divalent cations.
FRONTIERS IN CHEMISTRY
(2023)
Review
Chemistry, Physical
Elizaveta Demishkevich, Andrey Zyubin, Alexey Seteikin, Ilia Samusev, Inkyu Park, Chang Kwon Hwangbo, Eun Ha Choi, Geon Joon Lee
Summary: The purpose of this paper is to provide a comprehensive review of plasmonic metal nanoparticles made from rhodium, platinum, gold, or silver. The paper discusses fundamental concepts, synthesis methods, and optical sensing applications of these nanoparticles. Plasmonic metal nanoparticles have gained significant interest due to their potential for highly sensitive detection of analytes in various fields.
Article
Chemistry, Multidisciplinary
Taixing Tan, Shun Zhang, Jie Wang, Yuqin Zheng, Haopeng Lai, Jialiang Liu, Fengqi Qin, Cheng Wang
Summary: The study on stacking fault structure (SFT) in Ag nanoplates revealed three basic stacking faults and their various combinations, providing insights into the anisotropic growth mechanism along the 2D direction. The generation of different lateral faces through SFT formation in Ag nanoplates leads to the anisotropic growth along the 2D direction.
Article
Radiology, Nuclear Medicine & Medical Imaging
Audrey Lavielle, Fabien Boux, Justine Deborne, Noel Pinaud, Sandrine Dufort, Camille Verry, Sylvie Grand, Irene Tropres, Clement Vecco-Garda, Geraldine Le Duc, Stephane Mornet, Yannick Cremillieux
Summary: This study aims to generate T1 maps from MR images using the MPRAGE sequence and evaluate its feasibility in phantoms, animal models, and patients with brain metastases. The results demonstrate that the MPRAGE sequence can be used as a method to measure the concentration of Gd-based theranostic agents within a standard clinical imaging protocol.
JOURNAL OF MAGNETIC RESONANCE IMAGING
(2023)
Article
Chemistry, Physical
Naixin Kang, Xiaorong Wei, Ruofan Shen, Baojun Li, Eduardo Guisasola Cal, Sergio Moya, Lionel Salmon, Changlong Wang, Emerson Coy, Murielle Berlande, Jean-Luc Pozzo, Didier Astruc
Summary: This study reports the efficient performance of AuNi@ZIF-8 alloys as nanocatalysts for H2 evolution from ammonia borane hydrolysis under visible-light illumination. The catalytic activity of AuNi@ZIF-8 alloys under visible light was found to be 3.4 times higher than that of the monometallic Ni catalyst in the dark. This improvement is attributed to the superior support of ZIF-8 in Au0.5Ni0.5@ZIF-8 and the localized surface plasmon resonance induced between 450 and 620 nm. The results also reveal that the activation of water is always the rate-determining step.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Article
Chemistry, Physical
Paolo Canepa, Danijela Gregurec, Nara Liessi, Silvia Maria Cristina Rotondi, Sergio Enrique Moya, Enrico Millo, Maurizio Canepa, Ornella Cavalleri
Summary: Porous transition metal oxides were functionalized with amino acids to improve antibacterial properties. Two-step molecular deposition was used and investigated with AFM and XPS. The formation of monolayers was confirmed on flat titanium oxide thin films, and successful coupling with Fmoc-Leucine was observed through XPS analysis.
Article
Multidisciplinary Sciences
Patrick M. Perrigue, Agata Henschke, Bartosz F. Grzeskowiak, Lucja Przysiecka, Kaja Jaskot, Angelika Mielcarek, Emerson Coy, Sergio E. Moya
Summary: Understanding the interaction between nanoparticles and cells is crucial for designing more effective nanomedicines. This study investigates the biological fate of silica nanoparticles in senescent cells, which do not divide, using various methods including microscopy and flow cytometry. The results show that the nanoparticles readily enter the senescent cells and accumulate in the cytoplasm for a long time. This study lays the foundation for the development of NP-based tools for detecting and targeting senescent cells for therapeutic purposes.
SCIENTIFIC REPORTS
(2023)
Article
Chemistry, Physical
Naixin Kang, Ruofan Shen, Baojun Li, Fangyu Fu, Bruno Espuche, Sergio Moya, Lionel Salmon, Jean-Luc Pozzo, Didier Astruc
Summary: The synthesized AuPd@ZIF-8-alloyed nanoparticles serve as an excellent nanocatalyst for the methanolysis reaction of aminoborane under visible light irradiation, producing H-2 at a high rate. The visible-light-induced acceleration is attributed to the Au plasmonic excitation provoking hot electron transfer from Au to Pd-substrate ensemble.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Nanoscience & Nanotechnology
Cristian Salvador, Patrizia Andreozzi, Gabriela Romero, Iraida Loinaz, Damien Dupin, Sergio E. Moya
Summary: Small interference RNA (siRNA) is a gene modulation tool that can silence genes associated with genetic disorders. However, the instability of siRNA in the blood and its difficulty in reaching the cytosol limit its therapeutic potential. Polyamine-based nanoparticles, particularly polyallylamine hydrochloride (PAH), show promise in gene delivery. In this study, PAH was chemically modified with oleic acid to improve cell viability and siRNA transfection efficiency. The PAH-oleic acid substitutes were effective in silencing the CD47 protein, making them a potential candidate for immunotherapy.
ACS APPLIED BIO MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Yue Liu, Fangyu Fu, Lionel Salmon, Bruno Espuche, Sergio Moya, Murielle Berlande, Jean-Luc Pozzo, Jean-Rene Hamon, Didier Astruc
Summary: A new type of catalyst support, involving the addition of metal ion precursors to core-shell ZIF-8@ZIF-67, was proposed and its performance exceeded that of nanocatalysts in ZIF-8 or ZIF-67. Under visible-light illumination, the optimized nanocatalysts achieved a turnover frequency of 430 h-1 for selective formic acid dehydrogenation. The superiority of ZIF-8@Pd2Ag1@ZIF-67 over other catalysts was confirmed in the benchmarking model of 4nitrophenol reduction, indicating the interest in this novel catalyst design.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
Seyed Ehsan Alavi, Baptiste Martin, Yue Zan, Xinyu Yang, Mario Piedrahita-Bello, William Nicolazzi, Jean-Francois Ganghoffer, Lionel Salmon, Gabor Molnar, Azzedine Bousseksou
Summary: This study investigates the interplay between the thermomechanical and spin-crossover properties of stimuli-responsive polymer composites containing [Fe(NH2trz)3]SO4 and [Fe(Htrz)(trz)2]BF4 particles embedded in thermoplastic polyurethane and P(VDF-TrFE) matrices. The composites exhibit characteristic elastic softening and increased mechanical damping around the spin transition temperature, resulting from the significant spin state-volume strain coupling in the particles. The transformation strain and stress in the composites significantly increase and decrease, respectively, in soft matrices, as explained by micromechanical simulations. These findings offer a fundamental understanding and quantitative guidelines for the design of spin-crossover polymer composites for mechanical transducer applications.
CHEMISTRY OF MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Damian Paliwoda, Laure Vendier, Livia Getzner, Frederico Alabarse, Davide Comboni, Baptiste Martin, Seyed Ehsan Alavi, Mario Piedrahita Bello, Lionel Salmon, William Nicolazzi, Gabor Molnar, Azzedine Bousseksou
Summary: Two benchmark Fe(II)-triazole spin-crossover compounds, [Fe(Htrz)2trz]BF4 (1) and [Fe(NH2trz)3]SO4 (2), were investigated using various techniques to evaluate their transformation strain, compressibility, and anisotropy. Elastic softening and mechanical damping were observed during the spin-crossover process in both compounds, suggesting a coupling between spin state and lattice strain. The elastic potential energy, stored elastic work, and frictional work were assessed, providing important insights for understanding the behavior of this compound family and guiding their technological applications.
CRYSTAL GROWTH & DESIGN
(2023)
Article
Chemistry, Physical
Lijun Zhang, Karl Ridier, Oleksandr Ye. Horniichuk, Steïphane Calvez, Lionel Salmon, Gaïbor Molnar, Azzedine Bousseksou
Summary: The formation of hybrid light-matter states, which allows control of quantum-mechanical states and manipulation of molecular materials, has been observed in switchable strong light-matter coupling involving bistable spin-crossover molecules. The thermally induced switching between low-spin and high-spin states of these molecules enables fine control of the light-matter hybridization strength, offering the possibility of reversible switching between ultrastrong- and weak-coupling regimes within a single photonic structure. This work demonstrates the potential of spin-crossover molecular compounds in the development of tunable polaritonic devices and polaritonic chemistry.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2023)
Article
Chemistry, Organic
Jean Guillon, Solene Savrimoutou, Sandra Albenque-Rubio, Noel Pinaud, Nina Fillova, Stephane Moreau, Virginie Baylot, Vanessa Desplat
Summary: A new substituted pyrroloquinoxaline compound was designed, synthesized, and characterized in this study. The compound showed interesting cytotoxic potential against different human leukemia cell lines.
Article
Automation & Control Systems
Yue Zan, Mario Piedrahita-Bello, Seyed E. Alavi, Gabor Molnar, Bertrand Tondu, Lionel Salmon, Azzedine Bousseksou
Summary: The paper presents a bilayer bending cantilever actuator made of thermoplastic polyurethane (TPU) with embedded [Fe(NH(2)trz)(3)](SO4) molecular spin-crossover (SCO) particles. The actuator is capable of converting electrothermal input into mechanical response, and exhibits a curvature change of 0.11 mm^-1, a free transformation strain of 1.6%, and an effective work density of 1.25 mJ cm^-3. The actuator also demonstrates a fast response time and robustness in closed-loop experiments.
ADVANCED INTELLIGENT SYSTEMS
(2023)
Article
Chemistry, Inorganic & Nuclear
Xinyu Yang, Alejandro Enriquez-Cabrera, Dorian Toha, Yannick Coppel, Lionel Salmon, Azzedine Bousseksou
Summary: A pure mixed-anion Fe(NH(2)trz)(3)(BF4)(SiF6)(0.5) spin crossover complex is obtained through a solid-liquid post synthetic modification approach from the Fe(NH(2)trz)(3)(BF4)(2) parent complex. Highly crystalline powder samples incorporating homogeneous micrometric (1 & mu;m long) rod-shaped particles can be achieved using this method. This compound exhibits an abrupt spin crossover behavior with a narrow (10 K) hysteresis loop centered just above room temperature (320 K), making it highly interesting for integration into various application devices.
DALTON TRANSACTIONS
(2023)
Article
Nanoscience & Nanotechnology
Cristian Salvador, Patrizia Andreozzi, Gabriela Romero, Iraida Loinaz, Damien Dupin, Sergio E. Moya
Summary: Small interference RNA (siRNA) is a gene modulation tool that can silence genes related to genetic disorders. Polyamine-based nanoparticles, particularly polyallylamine hydrochloride (PAH) covalently functionalized with oleic acid, show promise in gene delivery and siRNA transfection. The substitution of PAH with oleic acid improves cell viability and siRNA transfection efficiency, particularly in silencing the CD47 protein for potential use in immunotherapy.
ACS APPLIED BIO MATERIALS
(2023)