1
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Dragosli F, Konidakis I, Stratakis E. Phosphate Glass Microspheres with Silver Nanoparticles for Whispering Gallery Mode Resonators. ACS APPLIED NANO MATERIALS 2024; 7:11170-11175. [PMID: 38910963 PMCID: PMC11190994 DOI: 10.1021/acsanm.4c00652] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/30/2024] [Revised: 04/24/2024] [Accepted: 04/30/2024] [Indexed: 06/25/2024]
Abstract
Glass microspheres have gained significant attention over the years in the field of photonics due to their application in whispering gallery mode (WGM) microresonator platforms. However, the synthesis of glass spheres in the micro regime remains challenging, while it relies mostly on complicated synthetic methods or sol-gel chemistry. Herein, we demonstrate the controlled formation of phosphate glass microspheres by means of a simple, fast, low-temperature, post-glass melting thermal treatment of previously quenched glass. Moreover, we report on the simultaneous formation of silver nanoparticles (AgNPs) on the surface of glass spheres upon the same treatment. The formation of metal nanoparticles onto the glass spheres induces attractive optical and plasmonic properties, believed to be suitable for WGM resonator-based applications, as well as a wide range of optoelectronic, photonic, and sensing applications.
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Affiliation(s)
- Foteini Dragosli
- Foundation for Research and
Technology-Hellas (FORTH), Institute of
Electronic Structure and Laser (IESL), 70013 Heraklion-Crete, Greece
| | - Ioannis Konidakis
- Foundation for Research and
Technology-Hellas (FORTH), Institute of
Electronic Structure and Laser (IESL), 70013 Heraklion-Crete, Greece
| | - Emmanuel Stratakis
- Foundation for Research and
Technology-Hellas (FORTH), Institute of
Electronic Structure and Laser (IESL), 70013 Heraklion-Crete, Greece
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2
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Tan EX, Tang J, Leong YX, Phang IY, Lee YH, Pun CS, Ling XY. Creating 3D Nanoparticle Structural Space via Data Augmentation to Bidirectionally Predict Nanoparticle Mixture's Purity, Size, and Shape from Extinction Spectra. Angew Chem Int Ed Engl 2024; 63:e202317978. [PMID: 38357744 DOI: 10.1002/anie.202317978] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2023] [Revised: 02/08/2024] [Accepted: 02/13/2024] [Indexed: 02/16/2024]
Abstract
Nanoparticle (NP) characterization is essential because diverse shapes, sizes, and morphologies inevitably occur in as-synthesized NP mixtures, profoundly impacting their properties and applications. Currently, the only technique to concurrently determine these structural parameters is electron microscopy, but it is time-intensive and tedious. Here, we create a three-dimensional (3D) NP structural space to concurrently determine the purity, size, and shape of 1000 sets of as-synthesized Ag nanocubes mixtures containing interfering nanospheres and nanowires from their extinction spectra, attaining low predictive errors at 2.7-7.9 %. We first use plasmonically-driven feature enrichment to extract localized surface plasmon resonance attributes from spectra and establish a lasso regressor (LR) model to predict purity, size, and shape. Leveraging the learned LR, we artificially generate 425,592 augmented extinction spectra to overcome data scarcity and create a comprehensive NP structural space to bidirectionally predict extinction spectra from structural parameters with <4 % error. Our interpretable NP structural space further elucidates the two higher-order combined electric dipole, quadrupole, and magnetic dipole as the critical structural parameter predictors. By incorporating other NP shapes and mixtures' extinction spectra, we anticipate our approach, especially the data augmentation, can create a fully generalizable NP structural space to drive on-demand, autonomous synthesis-characterization platforms.
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Affiliation(s)
- Emily Xi Tan
- Division of Chemistry and Biological Chemistry, School of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, 21 Nanyang Link, Singapore, 637371, Singapore
| | - Jingxiang Tang
- Division of Mathematics, School of Physical and Mathematical Sciences Department, Nanyang Technological University, 21 Nanyang Link, Singapore, 637371, Singapore
| | - Yong Xiang Leong
- Division of Chemistry and Biological Chemistry, School of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, 21 Nanyang Link, Singapore, 637371, Singapore
| | - In Yee Phang
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, International Joint Research Laboratory for Nano Energy Composites, School of Chemical and Material Engineering, Jiangnan University, Wuxi, 214122, People's Republic of China
| | - Yih Hong Lee
- Division of Chemistry and Biological Chemistry, School of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, 21 Nanyang Link, Singapore, 637371, Singapore
| | - Chi Seng Pun
- Division of Mathematics, School of Physical and Mathematical Sciences Department, Nanyang Technological University, 21 Nanyang Link, Singapore, 637371, Singapore
| | - Xing Yi Ling
- Division of Chemistry and Biological Chemistry, School of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, 21 Nanyang Link, Singapore, 637371, Singapore
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, International Joint Research Laboratory for Nano Energy Composites, School of Chemical and Material Engineering, Jiangnan University, Wuxi, 214122, People's Republic of China
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3
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Qing Y, Han B, Yu R, Zhou Z, Wu G, Li C, Ma P, Zhang C, Tan Z. Bright Blue Emission Lead-Free Halides with Narrow Bandwidth Enabled by Oversaturated Europium Doping. J Phys Chem Lett 2024; 15:1668-1676. [PMID: 38315425 DOI: 10.1021/acs.jpclett.3c03526] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2024]
Abstract
Eu2+-based lead-free metal halide nanocrystals (LFMH NCs), including CsEuCl3 NCs and CsX:Eu2+ NCs (X = Cl or Br), exhibit highly efficient narrow-band blue photoluminescence, making them competitive candidates for next-generation lighting and displays. However, the growing mechanism of the aforementioned NCs lacks in-depth study, which hinders the development of Eu2+-based nanomaterials. Herein, we demonstrate the colloidal synthesis of CsBr:Eu2+ NCs based on an air-stable europium source. The NCs show deep blue photoluminescence centered at 444 nm, with a maximum photoluminescence quantum yield (PLQY) reaching 53.4% and a fwhm of 30 nm. We further reveal the mechanism that determines CsBr host growth and Eu2+ doping in CsBr:Eu2+ nanocrystals, especially dopant trapping and self-purification, that determine the PLQY level. Pure white, warm white, and cold white LEDs are fabricated based on CsBr:Eu2+ NCs, red and green phosphors, and their performance suits the needs of high-quality lighting.
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Affiliation(s)
- Yizhao Qing
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Bing Han
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Runnan Yu
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Zhiming Zhou
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Guangzheng Wu
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Changxiao Li
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Peijin Ma
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Chengyang Zhang
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Zhan'ao Tan
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
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4
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Trahan J, Profili J, Robert-Bigras G, Mitronika M, Richard-Plouet M, Stafford L. Optical response of plasmonic silver nanoparticles after treatment by a warm microwave plasma jet. NANOTECHNOLOGY 2023; 34:195701. [PMID: 36724504 DOI: 10.1088/1361-6528/acb7f9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/09/2023] [Accepted: 02/01/2023] [Indexed: 06/18/2023]
Abstract
This work investigates the effect of plasma treatment on the morphology and composition of 15 × 15 mm2silver nanoparticle (70-80 nm) thin films. The silver nanoparticles are deposited onto thermal silica (SiO2/Si) substrates by spin-coating, then they are treated by an open-to-air microwave argon plasma jet characterized by a neutral gas temperature of 2200 ± 200 K. Scanning electron microscopy analysis reveals that the number of isolated nanoparticles in the film sample decreases after exposure to multiple jet passes, and that polygonal structures with sharp corners and edges are produced. Similar structures with much rounder edges are obtained after conventional thermal annealing at temperatures up to 1300 K. Based on localized surface plasmon resonance analysis in the range of 350-800 nm, the main extinction band of silver nanoparticles experiences a redshift after treatment with the plasma jet or with thermal annealing. Moreover, both treatments induce surface oxidation of the nanoparticles, as evidenced by x-ray photoelectron spectroscopy. However, only the plasma-exposed samples exhibit a significant rise in the surface-enhanced Raman scattering (SERS) signal of oxidized silver at 960 cm-1. 29×29μm2mappings of hyperspectral Raman IMAging (RIMA) and multivariate curve resolution analysis by log-likelihood maximization demonstrate that the SERS signal is controlled by large-scale micrometer domains that exhibit sharp corners and edges.
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Affiliation(s)
- J Trahan
- Département de Physique, Université de Montréal, 1375 ave Thérèse-Lavoie-Roux, Montréal, QC, H2V 0B3, Canada
| | - J Profili
- Département de Physique, Université de Montréal, 1375 ave Thérèse-Lavoie-Roux, Montréal, QC, H2V 0B3, Canada
| | - G Robert-Bigras
- Département de Physique, Université de Montréal, 1375 ave Thérèse-Lavoie-Roux, Montréal, QC, H2V 0B3, Canada
| | - M Mitronika
- Université de Nantes, CNRS, Institut des Matériaux Jean Rouxel, IMN, F-44000 Nantes, France
| | - M Richard-Plouet
- Université de Nantes, CNRS, Institut des Matériaux Jean Rouxel, IMN, F-44000 Nantes, France
| | - L Stafford
- Département de Physique, Université de Montréal, 1375 ave Thérèse-Lavoie-Roux, Montréal, QC, H2V 0B3, Canada
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5
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Silver-Based Surface Plasmon Sensors: Fabrication and Applications. Int J Mol Sci 2023; 24:ijms24044142. [PMID: 36835553 PMCID: PMC9963732 DOI: 10.3390/ijms24044142] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Revised: 02/13/2023] [Accepted: 02/15/2023] [Indexed: 02/22/2023] Open
Abstract
A series of novel phenomena such as optical nonlinear enhancement effect, transmission enhancement, orientation effect, high sensitivity to refractive index, negative refraction and dynamic regulation of low threshold can be generated by the control of surface plasmon (SP) with metal micro-nano structure and metal/material composite structure. The application of SP in nano-photonics, super-resolution imaging, energy, sensor detection, life science, and other fields shows an important prospect. Silver nanoparticles are one of the commonly used metal materials for SP because of their high sensitivity to refractive index change, convenient synthesis, and high controllable degree of shape and size. In this review, the basic concept, fabrication, and applications of silver-based surface plasmon sensors are summarized.
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6
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Skiba M, Vorobyova V. Green synthesis and characterization of silver nanoparticles using Prunus persica L. (peach pomace) with natural deep eutectic solvent and plasma-liquid process. CHEMICAL PAPERS 2022. [DOI: 10.1007/s11696-022-02274-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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7
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Sherpa L, Arun N, Nageswara Rao S, Khan S, Pathak A, Tripathi A, Tiwari A. 200 MeV Ag ion irradiation mediated green synthesis and self assembly of silver nanoparticles into dendrites for enhanced SERS applications. Radiat Phys Chem Oxf Engl 1993 2022. [DOI: 10.1016/j.radphyschem.2022.109966] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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8
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Composition-Dependent Cytotoxic and Antibacterial Activity of Biopolymer-Capped Ag/Au Bimetallic Nanoparticles against Melanoma and Multidrug-Resistant Pathogens. NANOMATERIALS 2022; 12:nano12050779. [PMID: 35269267 PMCID: PMC8912067 DOI: 10.3390/nano12050779] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Revised: 02/13/2022] [Accepted: 02/18/2022] [Indexed: 02/01/2023]
Abstract
Nanostructured silver (Ag) and gold (Au) are widely known to be potent biocidal and cytotoxic agents as well as biocompatible nanomaterials. It has been recently reported that combining both metals in a specific chemical composition causes a significant enhancement in their antibacterial activity against antibiotic-resistant bacterial strains, as well as in their anticancer effects, while preserving cytocompatibility properties. In this work, Ag/Au bimetallic nanoparticles over a complete atomic chemical composition range were prepared at 10 at% through a green, highly reproducible, and simple approach using starch as a unique reducing and capping agent. The noble metal nanosystems were thoroughly characterized by different analytical techniques, including UV-visible and FT-IR spectroscopies, XRD, TEM/EDS, XPS and ICP-MS. Moreover, absorption spectra simulations for representative colloidal Ag/Au-NP samples were conducted using FDTD modelling. The antibacterial properties of the bimetallic nanoparticles were determined against multidrug-resistant Escherichia coli and methicillin-resistant Staphylococcus aureus, showing a clear dose-dependent inhibition even at the lowest concentration tested (5 µg/mL). Cytocompatibility assays showed a medium range of toxicity at low and intermediate concentrations (5 and 10 µg/mL), while triggering an anticancer behavior, even at the lowest concentration tested, in a process involving reactive oxygen species production per the nanoparticle Au:Ag ratio. In this manner, this study provides promising evidence that the presently fabricated Ag/Au-NPs should be further studied for a wide range of antibacterial and anticancer applications.
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9
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Green synthesis of chitosan-stabilized silver-colloidal nanoparticles immobilized on white-silica-gel beads and the antibacterial activities in a simulated-air-filter. ARAB J CHEM 2022. [DOI: 10.1016/j.arabjc.2021.103596] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
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10
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Xuan LTQ, Nguyen LN, Dao NT. Synthesis of stabilizer-free, homogeneous gold nanoparticles by cold atmospheric-pressure plasma jet and their optical sensing property. NANOTECHNOLOGY 2021; 33:105603. [PMID: 34814120 DOI: 10.1088/1361-6528/ac3c7f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/15/2021] [Accepted: 11/23/2021] [Indexed: 06/13/2023]
Abstract
Recently, cold atmospheric-pressure plasma has been studied extensively as an efficient and green method to synthesize gold nanoparticles (AuNPs). Although the characteristics of the AuNPs, especially their homogeneousness, depend very much on the plasma synthesis parameters, there is a lack of a study involving these parameters systematically. Moreover, most of AuNPs-cold-plasma synthesis reports so far either required organic capping agents or resulted in highly non-uniform AuNPs. In this work, we systematically study the effect of most important synthesis parameters- including distance from the plasma jet to the solution, gas flow rate, plasma frequency, volume and concentration of the precursor, plasma interaction time as well as the effect of the synthesis environment (humidity and temperature)-on the uniformity of the AuNPs. Through various characterization measurements, we show that homogeneous and highly stable intrinsic AuNPs with an average size of 45 nm can be obtained with optimized synthesis parameters and in the absence of a stabilizer. The synthesized AuNPs yield advanced optical sensing properties in comparison with commercial AuNPs and can be further applied in developing versatile and high-sensitivity biosensors.
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Affiliation(s)
- Le Thi Quynh Xuan
- Laboratory of Plasma Technology, Institute of Materials Sciences (IMS), Vietnam Academy of Science and Technology (VAST), Hanoi, Vietnam
- Graduate University of Science and Technology (GUST), VAST, Vietnam
| | - Linh Nhat Nguyen
- Laboratory of Plasma Technology, Institute of Materials Sciences (IMS), Vietnam Academy of Science and Technology (VAST), Hanoi, Vietnam
| | - Nguyen Thuan Dao
- Laboratory of Plasma Technology, Institute of Materials Sciences (IMS), Vietnam Academy of Science and Technology (VAST), Hanoi, Vietnam
- Graduate University of Science and Technology (GUST), VAST, Vietnam
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11
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Sharma RK, Yadav S, Dutta S, Kale HB, Warkad IR, Zbořil R, Varma RS, Gawande MB. Silver nanomaterials: synthesis and (electro/photo) catalytic applications. Chem Soc Rev 2021; 50:11293-11380. [PMID: 34661205 DOI: 10.1039/d0cs00912a] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
In view of their unique characteristics and properties, silver nanomaterials (Ag NMs) have been used not only in the field of nanomedicine but also for diverse advanced catalytic technologies. In this comprehensive review, light is shed on general synthetic approaches encompassing chemical reduction, sonochemical, microwave, and thermal treatment among the preparative methods for the syntheses of Ag-based NMs and their catalytic applications. Additionally, some of the latest innovative approaches such as continuous flow integrated with MW and other benign approaches have been emphasized that ultimately pave the way for sustainability. Moreover, the potential applications of emerging Ag NMs, including sub nanomaterials and single atoms, in the field of liquid-phase catalysis, photocatalysis, and electrocatalysis as well as a positive role of Ag NMs in catalytic reactions are meticulously summarized. The scientific interest in the synthesis and applications of Ag NMs lies in the integrated benefits of their catalytic activity, selectivity, stability, and recovery. Therefore, the rise and journey of Ag NM-based catalysts will inspire a new generation of chemists to tailor and design robust catalysts that can effectively tackle major environmental challenges and help to replace noble metals in advanced catalytic applications. This overview concludes by providing future perspectives on the research into Ag NMs in the arena of electrocatalysis and photocatalysis.
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Affiliation(s)
- Rakesh Kumar Sharma
- Green Chemistry Network Centre, University of Delhi, New Delhi-110007, India.
| | - Sneha Yadav
- Green Chemistry Network Centre, University of Delhi, New Delhi-110007, India.
| | - Sriparna Dutta
- Green Chemistry Network Centre, University of Delhi, New Delhi-110007, India.
| | - Hanumant B Kale
- Department of Industrial and Engineering Chemistry, Institute of Chemical Technology, Mumbai-Marathwada Campus, Jalna-431213, Maharashtra, India.
| | - Indrajeet R Warkad
- Department of Industrial and Engineering Chemistry, Institute of Chemical Technology, Mumbai-Marathwada Campus, Jalna-431213, Maharashtra, India.
| | - Radek Zbořil
- Regional Centre of Advanced Technologies and Materials, Czech Advanced Technology and Research Institute, Palacký University, Šlechtitelů 27, 779 00 Olomouc, Czech Republic.,Nanotechnology Centre, CEET, VŠB-Technical University of Ostrava, 17. listopadu 2172/15, 708 00 Ostrava-Poruba, Czech Republic
| | - Rajender S Varma
- Regional Centre of Advanced Technologies and Materials, Czech Advanced Technology and Research Institute, Palacký University, Šlechtitelů 27, 779 00 Olomouc, Czech Republic.,U. S. Environmental Protection Agency, ORD, Center for Environmental Solutions and Emergency Response Water Infrastructure Division/Chemical Methods and Treatment Branch, 26 West Martin Luther King Drive, MS 483 Cincinnati, Ohio 45268, USA.
| | - Manoj B Gawande
- Department of Industrial and Engineering Chemistry, Institute of Chemical Technology, Mumbai-Marathwada Campus, Jalna-431213, Maharashtra, India.
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12
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Systematic Studies of Gold Nanoparticles Functionalised with Thioglucose and its Cytotoxic Effect. ChemistrySelect 2021. [DOI: 10.1002/slct.202100034] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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13
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Ahmed R, Melacini G. A biophysical toolset to probe the microscopic processes underlying protein aggregation and its inhibition by molecular chaperones. Biophys Chem 2021; 269:106508. [PMID: 33310607 DOI: 10.1016/j.bpc.2020.106508] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Revised: 11/09/2020] [Accepted: 11/13/2020] [Indexed: 10/22/2022]
Abstract
Given the breadth and depth of the scientific contributions of Sir Christopher Dobson, with over 870 publications to date, it is inconceivable to convey in a single review the impact of his work and its legacy. This review therefore primarily focuses on his contributions to the development of strategies for preventing aberrant protein misfolding. The first section of this review highlights his seminal work on the elucidation of the microscopic nucleation processes underlying protein aggregation. Next, we discuss the specific inhibition of these steps by candidate drugs and biologics, with a particular emphasis on the role of molecular chaperones. In the final section, we review how protein aggregation principles can be exploited for the rational design of novel and more potent aggregation inhibitors. These milestones serve as excellent examples of the profound impact of Dobson's seminal work on fundamental science and its translation into drug discovery.
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Affiliation(s)
- Rashik Ahmed
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON L8S 4M1, Canada
| | - Giuseppe Melacini
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON L8S 4M1, Canada; Department of Chemistry and Chemical Biology, McMaster University, Hamilton, ON L8S 4M1, Canada.
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14
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Shi J, Zhao S, Jiang H, Xu S, Zhao F, Shen R, Ye Y, Zhu P. Multi-size control of homogeneous explosives by coaxial microfluidics. REACT CHEM ENG 2021. [DOI: 10.1039/d1re00328c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A coaxial microfluidic platform was developed for the multi-size control of homogeneous explosives.
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Affiliation(s)
- Jinyu Shi
- School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Shuangfei Zhao
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 211800, China
| | - Hanyu Jiang
- Science and Technology on Combustion and Explosion Laboratory, Xi'an Modern Chemistry Research Institute, Shaanxi, Xi'an 710065, China
| | - Siyu Xu
- Science and Technology on Combustion and Explosion Laboratory, Xi'an Modern Chemistry Research Institute, Shaanxi, Xi'an 710065, China
| | - Fengqi Zhao
- Science and Technology on Combustion and Explosion Laboratory, Xi'an Modern Chemistry Research Institute, Shaanxi, Xi'an 710065, China
| | - Ruiqi Shen
- School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Yinghua Ye
- School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Peng Zhu
- School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
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15
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Yan Y, Nie Y, An L, Tang YQ, Xu Z, Wu XL. Improvement of Surface-Enhanced Raman Scattering Method for Single Bacterial Cell Analysis. Front Bioeng Biotechnol 2020; 8:573777. [PMID: 33042973 PMCID: PMC7527739 DOI: 10.3389/fbioe.2020.573777] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2020] [Accepted: 08/25/2020] [Indexed: 12/26/2022] Open
Abstract
Surface-enhanced Raman scattering (SERS) is a useful tool for label-free analysis of bacteria at the single cell level. However, low reproducibility limits the use of SERS. In this study, for the sake of sensitive and reproducible Raman spectra, we optimized the methods for preparing silver nanoparticles (AgNPs) and depositing AgNPs onto a cell surface. We found that fast dropwise addition of AgNO3 into the reductant produced smaller and more stable AgNPs, with an average diameter of 45 ± 4 nm. Compared with that observed after simply mixing the bacterial cells with AgNPs, the SERS signal was significantly improved after centrifugation. To optimize the SERS enhancement method, the centrifugal force, method for preparing AgNPs, concentration of AgNPs, ionic strength of the solution used to suspend the cells, and density of the cells were chosen as impact factors and optimized through orthogonal experiments. Finally, the improved method could generate sensitive and reproducible SERS spectra from single Escherichia coli cells, and the SERS signals primarily arose from the cell envelope. We further verified that this optimal method was feasible for the detection of low to 25% incorporation of 13C isotopes by the cells and the discrimination of different bacterial species. Our work provides an improved method for generating sensitive and reproducible SERS spectra.
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Affiliation(s)
- Yingchun Yan
- Institute of New Energy and Low-carbon Technology, Sichuan University, Chengdu, China.,College of Engineering, Peking University, Beijing, China
| | - Yong Nie
- College of Engineering, Peking University, Beijing, China
| | - Liyun An
- Institute of New Energy and Low-carbon Technology, Sichuan University, Chengdu, China.,College of Engineering, Peking University, Beijing, China
| | - Yue-Qin Tang
- Institute of New Energy and Low-carbon Technology, Sichuan University, Chengdu, China
| | - Zimu Xu
- College of Engineering, Peking University, Beijing, China
| | - Xiao-Lei Wu
- College of Engineering, Peking University, Beijing, China.,Institute of Ocean Research, Peking University, Beijing, China
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16
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Pinho B, Torrente-Murciano L. Continuous manufacturing of silver nanoparticles between 5 and 80 nm with rapid online optical size and shape evaluation. REACT CHEM ENG 2020. [DOI: 10.1039/c9re00452a] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Flexible manufacturing technology of nanoparticles with sizes between 5 and 80 nm. This unique size flexibility is enabled by coupling rapid online spectroscopy and a mathematical Mie theory-based algorithm for size and shape evaluation.
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Affiliation(s)
- Bruno Pinho
- Department of Chemical Engineering and Biotechnology
- University of Cambridge
- Cambridge
- UK
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17
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Armstrong OL, Baxter SN, Deepak FL, Thomas PJ. A one-pot route to stable Pickering emulsions featuring nanocrystalline Ag and Au. Chem Commun (Camb) 2020; 56:4801-4803. [DOI: 10.1039/d0cc00967a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A simple one-pot scheme yielding stable Pickering emulsions with Au or Ag nanoparticle surfactants is described. The dimensions and temporal stability of emulsion droplets as well the nanoparticle surfactants are studied.
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Affiliation(s)
| | - Sean N. Baxter
- School of Natural Sciences
- Bangor University
- Bangor
- Gwynedd
- UK
| | - F. L. Deepak
- Nanostructured Materials Group
- International Iberian Nanotechnology Laboratory
- 4715-330 Braga
- Portugal
| | - P. John Thomas
- School of Natural Sciences
- Bangor University
- Bangor
- Gwynedd
- UK
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18
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Abstract
Abstract
Inhibition of amyloid β peptide (Aβ) aggregation is an important goal due to the connection of this process with Alzheimer’s disease. Traditionally, inhibitors were developed with an aim to retard the overall macroscopic aggregation. However, recent advances imply that approaches based on mechanistic insights may be more powerful. In such approaches, the microscopic steps underlying the aggregation process are identified, and it is established which of these step(s) lead to neurotoxicity. Inhibitors are then derived to specifically target steps involved in toxicity. The Aβ aggregation process is composed of at minimum three microscopic steps: primary nucleation of monomers only, secondary nucleation of monomers on fibril surface, and elongation of fibrils by monomer addition. The vast majority of toxic species are generated from the secondary nucleation process: this may be a key process to inhibit in order to limit toxicity. Inhibition of primary nucleation, which delays the emergence of toxic species without affecting their total concentration, may also be effective. Inhibition of elongation may instead increase the toxicity over time. Here we briefly review findings regarding secondary nucleation of Aβ, its dominance over primary nucleation, and attempts to derive inhibitors that specifically target secondary nucleation with an aim to limit toxicity.
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Affiliation(s)
- Sara Linse
- Lund University , Department of Biochemistry and Structural Biology , P.O. Box 124 , 221 00 Lund , Sweden
- Lund University , NanoLund , Lund , Sweden
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19
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Vedarethinam V, Huang L, Xu W, Zhang R, Gurav DD, Sun X, Yang J, Chen R, Qian K. Detection and Inhibition of Bacteria on a Dual-Functional Silver Platform. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2019; 15:e1803051. [PMID: 30358085 DOI: 10.1002/smll.201803051] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2018] [Revised: 10/08/2018] [Indexed: 05/24/2023]
Abstract
Detection and inhibition of bacteria are universally required in clinics and daily life for health care. Developing a dual-functional material is challenging and in demand, engaging advanced applications for both defined bioanalysis and targeted biotoxicity. Herein, magnetic silver nanoshells are designed as a multifunctional platform for the detection and inhibition of bacteria. The optimized magnetic silver nanoshells enable direct laser desorption/ionization mass spectrometry based metabolic analysis of bacteria (≈10 µL-1 ), in complex biofluids. The serum infection process (0-10 h) is monitored by statistics toward clinical classification. Moreover, magnetic silver nanoshells facilitate surface adhesion on bacteria due to nanoscale surface roughness and thus display long-term antibacterial effects. Bacteria metabolism is studied with metabolic biomarkers (e.g., malate and lysine) identified during inhibition, showing cell membrane destruction and dysfunctional protein synthesis mechanisms. This work not only guides the design of material-based approaches for bioanalysis and biotoxicity, but contributes to bacteria-related diagnosis by using specific metabolic biomarkers for sensitive detection and new insights by monitoring metabolomic change of bacteria for antibacterial applications.
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Affiliation(s)
- Vadanasundari Vedarethinam
- School of Biomedical Engineering, Children's Hospital of Shanghai, and Med-X Research Institute, Shanghai Jiao Tong University, Shanghai, 200030, P. R. China
| | - Lin Huang
- School of Biomedical Engineering, Children's Hospital of Shanghai, and Med-X Research Institute, Shanghai Jiao Tong University, Shanghai, 200030, P. R. China
| | - Wei Xu
- School of Biomedical Engineering, Children's Hospital of Shanghai, and Med-X Research Institute, Shanghai Jiao Tong University, Shanghai, 200030, P. R. China
| | - Ru Zhang
- School of Biomedical Engineering, Children's Hospital of Shanghai, and Med-X Research Institute, Shanghai Jiao Tong University, Shanghai, 200030, P. R. China
| | - Deepanjali D Gurav
- School of Biomedical Engineering, Children's Hospital of Shanghai, and Med-X Research Institute, Shanghai Jiao Tong University, Shanghai, 200030, P. R. China
| | - Xuming Sun
- School of Biomedical Engineering, Children's Hospital of Shanghai, and Med-X Research Institute, Shanghai Jiao Tong University, Shanghai, 200030, P. R. China
| | - Jing Yang
- School of Biomedical Engineering, Children's Hospital of Shanghai, and Med-X Research Institute, Shanghai Jiao Tong University, Shanghai, 200030, P. R. China
| | - Ruoping Chen
- School of Biomedical Engineering, Children's Hospital of Shanghai, and Med-X Research Institute, Shanghai Jiao Tong University, Shanghai, 200030, P. R. China
| | - Kun Qian
- School of Biomedical Engineering, Children's Hospital of Shanghai, and Med-X Research Institute, Shanghai Jiao Tong University, Shanghai, 200030, P. R. China
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20
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Xu Y, Cui X, Qi K, Wei S, Wang Q, Zheng W. Interface engineered surface morphology evolution of Au@Pd core-shell nanorods. NANOSCALE 2018; 10:21161-21167. [PMID: 30407474 DOI: 10.1039/c8nr06835f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Engineering the interfacial structure of bimetallic nanocrystals is an effective method to improve their electrocatalytic performances. Here, we design a facile strategy for controlling the surface morphology evolution of Au@Pd core-shell nanorods by adjusting the solution supersaturation. The Pd shell of the as-prepared Au@Pd bimetallic nanorods can be modulated from a (111) facet-exposed island to a (100) facet-exposed conformal shell. The conformal shell structure exhibited enhanced catalytic performance toward the ethanol oxidation reaction, while the core-island structure possessed better catalytic stability. This work provides a facile method for interfacial engineering of bimetallic nanocrystals with desired morphology and properties.
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Affiliation(s)
- Yanchao Xu
- State Key Laboratory of Automotive Simulation and Control, School of Materials Science and Engineering, Key Laboratory of Automobile Materials of MOE and Jilin University, Changchun, 130012, People's Republic of China.
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21
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Törnquist M, Michaels TCT, Sanagavarapu K, Yang X, Meisl G, Cohen SIA, Knowles TPJ, Linse S. Secondary nucleation in amyloid formation. Chem Commun (Camb) 2018; 54:8667-8684. [PMID: 29978862 DOI: 10.1039/c8cc02204f] [Citation(s) in RCA: 272] [Impact Index Per Article: 45.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Nucleation of new peptide and protein aggregates on the surfaces of amyloid fibrils of the same peptide or protein has emerged in the past two decades as a major pathway for both the generation of molecular species responsible for cellular toxicity and for the autocatalytic proliferation of peptide and protein aggregates. A key question in current research is the molecular mechanism and driving forces governing such processes, known as secondary nucleation. In this context, the analogies with other self-assembling systems for which monomer-dependent secondary nucleation has been studied for more than a century provide a valuable source of inspiration. Here, we present a short overview of this background and then review recent results regarding secondary nucleation of amyloid-forming peptides and proteins, focusing in particular on the amyloid β peptide (Aβ) from Alzheimer's disease, with some examples regarding α-synuclein from Parkinson's disease. Monomer-dependent secondary nucleation of Aβ was discovered using a combination of kinetic experiments, global analysis, seeding experiments and selective isotope-enrichment, which pinpoint the monomer as the origin of new aggregates in a fibril-catalyzed reaction. Insights into driving forces are gained from variations of solution conditions, temperature and peptide sequence. Selective inhibition of secondary nucleation is explored as an effective means to limit oligomer production and toxicity. We also review experiments aimed at finding interaction partners of oligomers generated by secondary nucleation in an ongoing aggregation process. At the end of this feature article we bring forward outstanding questions and testable mechanistic hypotheses regarding monomer-dependent secondary nucleation in amyloid formation.
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Affiliation(s)
- Mattias Törnquist
- Lund University, Department of Biochemistry and Structural Biology, Chemical Centre, PO Box 124, SE221 00 Lund, Sweden.
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22
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Wu KJ, Torrente-Murciano L. Continuous synthesis of tuneable sized silver nanoparticles via a tandem seed-mediated method in coiled flow inverter reactors. REACT CHEM ENG 2018. [DOI: 10.1039/c7re00194k] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Size control of metal nanoparticles is essential to achieve accurate adjustment of their unique chemical and physical properties.
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Affiliation(s)
- Ke-Jun Wu
- Department of Chemical Engineering and Biotechnology
- Philippa Fawcett Drive
- University of Cambridge
- Cambridge
- UK
| | - Laura Torrente-Murciano
- Department of Chemical Engineering and Biotechnology
- Philippa Fawcett Drive
- University of Cambridge
- Cambridge
- UK
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23
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Novel Weed-Extracted Silver Nanoparticles and Their Antibacterial Appraisal against a Rare Bacterium from River and Sewage Treatment Plan. NANOMATERIALS 2017; 8:nano8010009. [PMID: 29278389 PMCID: PMC5791096 DOI: 10.3390/nano8010009] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/28/2017] [Revised: 12/12/2017] [Accepted: 12/15/2017] [Indexed: 02/01/2023]
Abstract
This is the first investigation to demonstrate the use of biochemical contents present within Cyperus rotundus, Eleusin indica, Euphorbia hirta, Melastoma malabathricum, Clidemia hirta and Pachyrhizus erosus extracts for the reduction of silver ion to silver nanoparticles (AgNPs) form. In addition, the antibacterial capability of the synthesized AgNPs and plant extracts alone against a rare bacterium, Chromobacterium haemolyticum (C. haemolyticum), was examined. Moreover, ultraviolet-visible spectroscopy (UV-vis), Fourier transform infrared spectroscopy (FTIR), field emission scanning electron microscopy (FESEM), energy-dispersive X-ray spectroscopy (EDX) and inductively coupled plasma atomic emission spectroscopy (ICPOES) of the synthesized AgNPs were characterized. The smallest AgNPs can be produced when Cyperus rotundus extracts were utilized. In addition, this study has found that the synthesis efficiencies using all plant extracts are in the range of 72% to 91% with the highest percentage achieved when Eleusin indica extract was employed. All synthesized AgNPs have antibacterial capability against all examined bacteria depending on their size and bacteria types. Interestingly, Melastoma malabathricum and Clidemia hirta extracts have demonstrated an antibacterial ability against C. haemolyticum.
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Haber J, Sokolov K. Synthesis of Stable Citrate-Capped Silver Nanoprisms. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:10525-10530. [PMID: 28898093 PMCID: PMC6286051 DOI: 10.1021/acs.langmuir.7b01362] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Citrate-stabilized silver nanoprisms (AgNPrs) can be easily functionalized using well-developed thiol based surface chemistry that is an important requirement for biosensor applications utilizing localized surface plasmon resonance (LSPR) and surface-enhanced Raman Scattering (SERS). Unfortunately, currently available protocols for synthesis of citrate-coated AgNPrs do not produce stable nanoparticles thus limiting their usefulness in biosensing applications. Here we address this problem by carrying out a systematic study of citrate-stabilized, peroxide-based synthesis of AgNPrs to optimize reaction conditions for production of stable and reproducible nanoprisms. Our analysis showed that concentration of secondary reducing agent, l-ascorbic acid, is critical to AgNPr stability. Furthermore, we demonstrated that optimization of other synthesis conditions such as stabilizer concentration, rate of silver nitrate addition, and seed dilution result in highly stable nanoprisms with narrow absorbance peaks ranging from 450 nm into near-IR. In addition, the optimized reaction conditions can be used to produce AgNPrs in a one-pot synthesis instead of a previously described two-step reaction. The resulting nanoprisms can readily interact with thiols for easy surface functionalization. These studies provide an optimized set of parameters for precise control of citrate stabilized AgNPr synthesis for biomedical applications.
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Affiliation(s)
- Jason Haber
- Department of Imaging Physics, UT MD Anderson Cancer Center, 1515 Holcombe Blvd, Houston, Texas 77030, United States
- Department of Biomedical Engineering, University of Texas at Austin, Austin, Texas 78712, United States
| | - Konstantin Sokolov
- Department of Imaging Physics, UT MD Anderson Cancer Center, 1515 Holcombe Blvd, Houston, Texas 77030, United States
- Department of Biomedical Engineering, University of Texas at Austin, Austin, Texas 78712, United States
- Department of Bioengineering, Rice University, 6500 Main Street, Houston, Texas 77030, United States
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25
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Wu Z, Yang S, Wu W. Shape control of inorganic nanoparticles from solution. NANOSCALE 2016; 8:1237-59. [PMID: 26696235 DOI: 10.1039/c5nr07681a] [Citation(s) in RCA: 189] [Impact Index Per Article: 23.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Inorganic materials with controllable shapes have been an intensely studied subject in nanoscience over the past decades. Control over novel and anisotropic shapes of inorganic nanomaterials differing from those of bulk materials leads to unique and tunable properties for widespread applications such as biomedicine, catalysis, fuels or solar cells and magnetic data storage. This review presents a comprehensive overview of shape-controlled inorganic nanomaterials via nucleation and growth theory and the control of experimental conditions (including supersaturation, temperature, surfactants and secondary nucleation), providing a brief account of the shape control of inorganic nanoparticles during wet-chemistry synthetic processes. Subsequently, typical mechanisms for shape-controlled inorganic nanoparticles and the general shape of the nanoparticles formed by each mechanism are also expounded. Furthermore, the differences between similar mechanisms for the shape control of inorganic nanoparticles are also clearly described. The authors envision that this review will provide valuable guidance on experimental conditions and process control for the synthesis of inorganic nanoparticles with tunable shapes in the solution state.
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Affiliation(s)
- Zhaohui Wu
- Department of Chemical Engineering, Kyung Hee University, Seocheon-Dong, Giheung-Gu, 446-701 Yongin-Si, Korea and Laboratory of Printable Functional Nanomaterials and Printed Electronics, School of Printing and Packaging, Wuhan University, Wuhan 430072, P. R. China
| | - Shuanglei Yang
- Laboratory of Printable Functional Nanomaterials and Printed Electronics, School of Printing and Packaging, Wuhan University, Wuhan 430072, P. R. China and College of Chemical and Environmental Engineering, Qingdao University, Qingdao, P. R. China
| | - Wei Wu
- Laboratory of Printable Functional Nanomaterials and Printed Electronics, School of Printing and Packaging, Wuhan University, Wuhan 430072, P. R. China and Department of Physics and Materials Science, City University of Hong Kong, Hong Kong, SAR, P. R. China.
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26
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Bastús NG, Piella J, Puntes V. Quantifying the Sensitivity of Multipolar (Dipolar, Quadrupolar, and Octapolar) Surface Plasmon Resonances in Silver Nanoparticles: The Effect of Size, Composition, and Surface Coating. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:290-300. [PMID: 26649600 DOI: 10.1021/acs.langmuir.5b03859] [Citation(s) in RCA: 53] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
The effect of composition, size, and surface coating on the sensitivity of localized multipolar surface plasmon resonances has been spectroscopically investigated in high-quality silver colloidal solutions with precisely controlled sizes from 10 to 220 nm and well-defined surface chemistry. Surface plasmon resonance modes have been intensively characterized, identifying the size-dependence of dipolar, quadrupolar, and octapolar modes. Modifications of the NP's surface chemistry revealed the higher sensitivity of large sizes, long molecules, thiol groups, and low-order resonance modes. We also extend this study to gold nanoparticles, aiming to compare the sensitivity of both materials, quantifying the higher sensitivity of silver.
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Affiliation(s)
- Neus G Bastús
- Institut Català de Nanociència i Nanotecnologia (ICN2) , Campus UAB, 08193 Bellaterra, Barcelona, Spain
| | - Jordi Piella
- Institut Català de Nanociència i Nanotecnologia (ICN2) , Campus UAB, 08193 Bellaterra, Barcelona, Spain
- Universitat Autònoma de Barcelona (UAB) , Campus UAB, 08193 Bellaterra, Barcelona, Spain
| | - Víctor Puntes
- Institut Català de Nanociència i Nanotecnologia (ICN2) , Campus UAB, 08193 Bellaterra, Barcelona, Spain
- Institut Català de Recerca i Estudis Avançats (ICREA) , 08010 Barcelona, Spain
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27
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Tang FL, Liu J, Mei C, Huang SY, Song TT, Su HL, Lee MK, Wu YC, Huang JCA. Microstructure and magnetism of Co-doped PbPdO2 films with different grain sizes. RSC Adv 2016. [DOI: 10.1039/c6ra04424g] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The dependence of the magnetism of the Co-doped PbPdO2 nanograin films with peculiar spin-gapless-related feature on the grain size was studied in detail.
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Affiliation(s)
- F. L. Tang
- School of Materials Science and Engineering and Anhui Provincial Key Laboratory of Advanced Functional Materials and Devices
- Hefei University of Technology
- Hefei 230009
- People’s Republic of China
| | - J. Liu
- School of Materials Science and Engineering and Anhui Provincial Key Laboratory of Advanced Functional Materials and Devices
- Hefei University of Technology
- Hefei 230009
- People’s Republic of China
| | - C. Mei
- School of Materials Science and Engineering and Anhui Provincial Key Laboratory of Advanced Functional Materials and Devices
- Hefei University of Technology
- Hefei 230009
- People’s Republic of China
| | - S. Y. Huang
- Department of Physics
- National Cheng Kung University
- Tainan 701
- Taiwan
| | - T. T. Song
- School of Materials Science and Engineering and Anhui Provincial Key Laboratory of Advanced Functional Materials and Devices
- Hefei University of Technology
- Hefei 230009
- People’s Republic of China
| | - H. L. Su
- School of Materials Science and Engineering and Anhui Provincial Key Laboratory of Advanced Functional Materials and Devices
- Hefei University of Technology
- Hefei 230009
- People’s Republic of China
| | - M. K. Lee
- Department of Physics
- National Cheng Kung University
- Tainan 701
- Taiwan
| | - Y. C. Wu
- School of Materials Science and Engineering and Anhui Provincial Key Laboratory of Advanced Functional Materials and Devices
- Hefei University of Technology
- Hefei 230009
- People’s Republic of China
| | - J. C. A. Huang
- Department of Physics
- National Cheng Kung University
- Tainan 701
- Taiwan
- Advanced Optoelectronic Technology Center (AOTC)
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28
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Yu W, Li S, Huang C. Phase evolution and crystal growth of VO2 nanostructures under hydrothermal reactions. RSC Adv 2016. [DOI: 10.1039/c5ra23898f] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The phase evolution and crystal growth of VO2 nanostructures under hydrothermal conditions was comprehensively investigated and the feasibility of the Ostwald's step rules towards VO2 polymorph evolution was for the first time demonstrated.
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Affiliation(s)
- Weilai Yu
- College of Chemistry and Molecular Sciences
- Wuhan University
- Wuhan
- China
| | - Shuai Li
- College of Chemistry and Molecular Sciences
- Wuhan University
- Wuhan
- China
| | - Chi Huang
- College of Chemistry and Molecular Sciences
- Wuhan University
- Wuhan
- China
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29
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Tang C, Sosa CL, Pagels RF, Priestley RD, Prud'homme RK. Efficient preparation of size tunable PEGylated gold nanoparticles. J Mater Chem B 2016; 4:4813-4817. [DOI: 10.1039/c6tb00886k] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Flash NanoPrecipitation enables rapid, scalable, one-step synthesis of size-tunable PEGylated gold nanoparticles for drug delivery and translational imaging applications.
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Affiliation(s)
- Christina Tang
- Department of Chemical and Life Science Engineering
- Virginia Commonwealth University
- Richmond
- USA
- Department of Chemical Engineering
| | - Chris L. Sosa
- Department of Chemical Engineering
- Princeton University
- Princeton
- USA
| | - Robert F. Pagels
- Department of Chemical Engineering
- Princeton University
- Princeton
- USA
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30
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Sharma K, Singh G, Singh G, Kumar M, Bhalla V. Silver nanoparticles: facile synthesis and their catalytic application for the degradation of dyes. RSC Adv 2015. [DOI: 10.1039/c5ra02909k] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
The aggregates of pentacenequinone, HPB and PDI derivatives 3, 5 and 7 having aldehyde groups bind strongly with Ag+ and serve as reactors and stabilizers for the preparation of AgNPs at room temperature. In situ generated AgNPs show high catalytic efficiency for industrially important organic dye degradation.
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Affiliation(s)
- Kamaldeep Sharma
- Department of Chemistry
- UGC Sponsored-Centre for Advanced Studies-I
- Guru Nanak Dev University
- Amritsar-143005
- India
| | - Gurpreet Singh
- Department of Chemistry
- UGC Sponsored-Centre for Advanced Studies-I
- Guru Nanak Dev University
- Amritsar-143005
- India
| | - Gurpreet Singh
- Department of Chemistry
- UGC Sponsored-Centre for Advanced Studies-I
- Guru Nanak Dev University
- Amritsar-143005
- India
| | - Manoj Kumar
- Department of Chemistry
- UGC Sponsored-Centre for Advanced Studies-I
- Guru Nanak Dev University
- Amritsar-143005
- India
| | - Vandana Bhalla
- Department of Chemistry
- UGC Sponsored-Centre for Advanced Studies-I
- Guru Nanak Dev University
- Amritsar-143005
- India
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