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Nathanael K, Cheng S, Kovalchuk NM, Arcucci R, Simmons MJ. Optimization of microfluidic synthesis of silver nanoparticles: a generic approach using machine learning. Chem Eng Res Des 2023. [DOI: 10.1016/j.cherd.2023.03.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/09/2023]
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SPR-based assay kit for rapid determination of Pb2+. Anal Chim Acta 2022; 1220:340030. [DOI: 10.1016/j.aca.2022.340030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2022] [Revised: 06/01/2022] [Accepted: 06/02/2022] [Indexed: 11/17/2022]
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Schwartz G, Hananel U, Avram L, Goldbourt A, Markovich G. A Kinetic Isotope Effect in the Formation of Lanthanide Phosphate Nanocrystals. J Am Chem Soc 2022; 144:9451-9457. [PMID: 35594149 PMCID: PMC9189826 DOI: 10.1021/jacs.2c02424] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
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Mechanisms of nucleation and growth
of crystals are still attracting
a great deal of interest, in particular with recent advances in experimental
techniques aimed at studying such phenomena. Studies of kinetic isotope
effects in various reactions have been useful for elucidating reaction
mechanisms, and it is believed that the same may apply for crystal
formation kinetics. In this work, we present a kinetic study of the
formation of europium-doped terbium phosphate nanocrystals under acidic
conditions, including a strong H/D isotope effect. The nanocrystal
growth process could be quantitatively followed through monitoring
of the europium luminescence intensity. Hence, such lanthanide-based
nanocrystals may serve as unique model systems for studying crystal
nucleation and growth mechanisms. By combining the luminescence and
NMR kinetics data, we conclude that the observed delayed nucleation
occurs due to initial formation of pre-nucleation clusters or polymers
of the lanthanide and phosphate ions, which undergo a phase transformation
to crystal nuclei and further grow by cluster attachment. A scaling
behavior observed on comparison of the H2O and D2O-based pre-nucleation and nanocrystal growth kinetics led us to
conclude that both pre-nucleation and nanocrystal growth processes
are of similar chemical nature.
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Affiliation(s)
- Gal Schwartz
- School of Chemistry, Raymond and Beverly Sackler Faculty of Exact Sciences, Tel Aviv University, Tel Aviv 6997801, Israel
| | - Uri Hananel
- School of Chemistry, Raymond and Beverly Sackler Faculty of Exact Sciences, Tel Aviv University, Tel Aviv 6997801, Israel
| | - Liat Avram
- Department of Chemical Research Support, Weizmann Institute of Science, Rehovot 7610001, Israel
| | - Amir Goldbourt
- School of Chemistry, Raymond and Beverly Sackler Faculty of Exact Sciences, Tel Aviv University, Tel Aviv 6997801, Israel
| | - Gil Markovich
- School of Chemistry, Raymond and Beverly Sackler Faculty of Exact Sciences, Tel Aviv University, Tel Aviv 6997801, Israel
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Kurhade P, Kodape S, Junghare K, Bansod PG, Bhutada D. Development of MgO nanoparticles via green synthesis at varying concentrations of precursor and mahua flower extract. INORG NANO-MET CHEM 2022. [DOI: 10.1080/24701556.2022.2068581] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Pranali Kurhade
- Department of Chemical Engineering, Visvesvaraya National Institute of Technology, Nagpur, Maharashtra, India
| | - Shyam Kodape
- Department of Chemical Engineering, Visvesvaraya National Institute of Technology, Nagpur, Maharashtra, India
| | - Kunjan Junghare
- Department of Chemical Engineering, Visvesvaraya National Institute of Technology, Nagpur, Maharashtra, India
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Huang X, Liu Q, Wu C, Lin Z, Huang A, Qiu B. Controllable release ratiometric fluorescent sensor for hyaluronidase via the combination of Cu 2+-Fe-N-C nanozymes and degradable intelligent hydrogel. Talanta 2022; 237:122961. [PMID: 34736686 DOI: 10.1016/j.talanta.2021.122961] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2021] [Revised: 10/03/2021] [Accepted: 10/08/2021] [Indexed: 10/20/2022]
Abstract
As a popular controllable-released carrier, intelligent hydrogels are often used in drug delivery and disease therapeutics. Meanwhile, benefit from the mimic-enzyme activity performance, Fe-N-C nanozymes have been widely used in sensing and analysis. However, the combination of intelligent hydrogels with specific degradability and Fe-N-C nanozymes with enhanced activity in one system to achieve controllable and sensitive detection is rare. Herein, we combine intelligent hydrogel with mimic peroxidase activity enhanced Fe-N-C nanozymes to construct a ratiometric fluorescence probe for sensitive detection of hyaluronidase (HAase). The modification of copper ions has been proved to enhance the mimic enzyme activity of Fe-N-C nanozymes greatly. Cu2+ modified Fe-N-C nanozymes were embedded in hyaluronic acid hydrogel. In the presence of HAase, the HA hydrogel structure was hydrolyzed and released Cu2+-Fe-N-C nanozymes gradually. The released Cu2+-Fe-N-C nanozymes are used to catalyze the hydrogen peroxide system so that o-phenylenediamine is oxidized to orange fluorescent 2, 3-diaminophenolazine (DAP). Due to the electrostatic interaction, the fluorescence resonance energy transfer can occur between the negatively charged copper nanoclusters emitted by 430 nm and the positively charged DAP emitted by 560 nm. The activity of HAase was monitored according to the ratio of fluorescence intensity at 560 nm and 430 nm (F560/F430). The linear range of this method is 0-10.0 U/ml and the detection limit is 0.43 U/mL (S/N = 3). This strategy has been further applied to biological samples successfully.
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Affiliation(s)
- Xuemin Huang
- Ministry of Education Key Laboratory for Analytical Science of Food Safety and Biology, Fujian Provincial Key Laboratory of Analysis and Detection for Food Safety, Eel Farming and Processing, Fuzhou University, Fuzhou, Fujian, 350108, PR China
| | - Qingfeng Liu
- Ministry of Education Key Laboratory for Analytical Science of Food Safety and Biology, Fujian Provincial Key Laboratory of Analysis and Detection for Food Safety, Eel Farming and Processing, Fuzhou University, Fuzhou, Fujian, 350108, PR China
| | - Cuimin Wu
- Faculty of Pharmacy, Fujian Medical University, Fuzhou, 350108, China.
| | - Zhenyu Lin
- Ministry of Education Key Laboratory for Analytical Science of Food Safety and Biology, Fujian Provincial Key Laboratory of Analysis and Detection for Food Safety, Eel Farming and Processing, Fuzhou University, Fuzhou, Fujian, 350108, PR China
| | - Aiwen Huang
- Clinical Pharmacy Department, 900TH Hospital of Joint Logistics Support Force, Fuzhou, Fujian, 350001, PR China.
| | - Bin Qiu
- Ministry of Education Key Laboratory for Analytical Science of Food Safety and Biology, Fujian Provincial Key Laboratory of Analysis and Detection for Food Safety, Eel Farming and Processing, Fuzhou University, Fuzhou, Fujian, 350108, PR China.
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Jharimune S, Pfukwa R, Chen Z, Anderson J, Klumperman B, Rioux RM. Chemical Identity of Poly( N-vinylpyrrolidone) End Groups Impact Shape Evolution During the Synthesis of Ag Nanostructures. J Am Chem Soc 2021; 143:184-195. [PMID: 33346658 DOI: 10.1021/jacs.0c08528] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Ag nanocubes (AgNCs) are predominantly synthesized by the polyol method, where the solvent (ethylene glycol) is considered the reducing agent and poly(N-vinylpyrrolidone) (PVP) the shape-directing agent. An experimental phase diagram for the formation of Ag nanocubes as a function of PVP monomer concentration (Cm) and molecular weight (Mw) demonstrated end groups of PVP impact the final Ag product. Measured rates of the initial Ag+ reduction at different PVP Cm and Mw confirmed the reducing effect originates from end-groups. PVP with well-defined aldehyde and hydroxyl end groups lead to the formation of Ag nanocubes and nanowires respectively, indicating the faster reducing agent formed kinetically preferred nanowires. We demonstrate PVP end-groups induce initial reduction of Ag+ to form seeds followed by autocatalytic reduction of Ag+ by ethylene glycol (and not solvent oxidation products) to form Ag nanostructures. The current study enabled a quantitative description of the role of PVP in nanoparticle shape-control and demonstrates a unique opportunity to design nanostructures by combining nanoparticle synthesis with polymer design to introduce specific physicochemical properties.
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Affiliation(s)
- Suprita Jharimune
- Department of Chemistry, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Rueben Pfukwa
- Department of Chemistry and Polymer Science, Stellenbosch University, Private Bag X1, Matieland 7602, South Africa
| | - Zhifeng Chen
- Department of Chemical Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Justin Anderson
- Department of Chemical Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Bert Klumperman
- Department of Chemistry and Polymer Science, Stellenbosch University, Private Bag X1, Matieland 7602, South Africa
| | - Robert M Rioux
- Department of Chemistry, The Pennsylvania State University, University Park, Pennsylvania 16802, United States.,Department of Chemical Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
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Reverberi AP, Vocciante M, Salerno M, Ferretti M, Fabiano B. Green Synthesis of Silver Nanoparticles by Low-Energy Wet Bead Milling of Metal Spheres. MATERIALS (BASEL, SWITZERLAND) 2019; 13:E63. [PMID: 31877711 PMCID: PMC6982072 DOI: 10.3390/ma13010063] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/16/2019] [Revised: 12/17/2019] [Accepted: 12/19/2019] [Indexed: 01/04/2023]
Abstract
A low-energy, magnetically-driven milling technique for the synthesis of silver nanoparticles is proposed, where the grinding medium and the metal precursor consisting of silver spheres have the same shape and size, belonging to a millimetric scale. The process is carried out at room temperature in aqueous solvent, where different types of capping agents have been dissolved to damp particle agglomeration. The particle diameters, determined by dynamic light scattering and transmission electron microscopy, have been compared with those typical of conventional wet-chemical bottom-up synthesis processes. The use of milling spheres and metal precursor of the same initial shape and size allows to overcome some drawbacks and limitations distinctive of conventional bead-milling equipment, generally requiring complex operations of separation and recovery of milling media. The milling bead/nanoparticle diameter ratio obtained by this approach is lower than that typical of most previous wet bead milling techniques. The method described here represents a simple, one-pot, cost-effective, and eco-friendly process for the synthesis of metal nanoparticles starting from a bulky solid.
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Affiliation(s)
- Andrea Pietro Reverberi
- DCCI, Department of Chemistry and Industrial Chemistry, Università degli Studi di Genova, Via Dodecaneso 31, 16146 Genova, Italy; (M.V.); (M.F.)
| | - Marco Vocciante
- DCCI, Department of Chemistry and Industrial Chemistry, Università degli Studi di Genova, Via Dodecaneso 31, 16146 Genova, Italy; (M.V.); (M.F.)
| | - Marco Salerno
- Nanophysics Department, Istituto Italiano di Tecnologia, via Morego 30, 16163 Genova, Italy;
| | - Maurizio Ferretti
- DCCI, Department of Chemistry and Industrial Chemistry, Università degli Studi di Genova, Via Dodecaneso 31, 16146 Genova, Italy; (M.V.); (M.F.)
| | - Bruno Fabiano
- DICCA, Department of Civil, Chemical and Environmental Engineering, Polytechnic School, Università degli Studi di Genova, Via Opera Pia 15, 16145 Genova, Italy;
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