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Li Y, Yang S. Magnetic-metals sunflower nanocomposites for significant fluorescence enhancement. Inorganica Chim Acta 2022. [DOI: 10.1016/j.ica.2021.120652] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Popescu RC, Andronescu E, Vasile BS. Recent Advances in Magnetite Nanoparticle Functionalization for Nanomedicine. NANOMATERIALS (BASEL, SWITZERLAND) 2019; 9:E1791. [PMID: 31888236 PMCID: PMC6956201 DOI: 10.3390/nano9121791] [Citation(s) in RCA: 47] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/31/2019] [Revised: 11/22/2019] [Accepted: 12/11/2019] [Indexed: 02/07/2023]
Abstract
Functionalization of nanomaterials can enhance and modulate their properties and behaviour, enabling characteristics suitable for medical applications. Magnetite (Fe3O4) nanoparticles are one of the most popular types of nanomaterials used in this field, and many technologies being already translated in clinical practice. This article makes a summary of the surface modification and functionalization approaches presented lately in the scientific literature for improving or modulating magnetite nanoparticles for their applications in nanomedicine.
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Affiliation(s)
- Roxana Cristina Popescu
- National Research Center for Micro and Nanomaterials, Department of Science and Oxide Materials and Nanomaterials, Politehnica University of Bucharest, 060042 Bucharest, Romania; (R.C.P.); (E.A.)
- Department of Life and Environmental Physics, “Horia Hulubei” National Institute for Physics and Nuclear Engineering, 077125 Magurele, Romania
| | - Ecaterina Andronescu
- National Research Center for Micro and Nanomaterials, Department of Science and Oxide Materials and Nanomaterials, Politehnica University of Bucharest, 060042 Bucharest, Romania; (R.C.P.); (E.A.)
| | - Bogdan Stefan Vasile
- National Research Center for Micro and Nanomaterials, Department of Science and Oxide Materials and Nanomaterials, Politehnica University of Bucharest, 060042 Bucharest, Romania; (R.C.P.); (E.A.)
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Li Y, Yang S, Lu X, Duan W, Moriga T. Synthesis and evaluation of the SERS effect of Fe3O4–Ag Janus composite materials for separable, highly sensitive substrates. RSC Adv 2019; 9:2877-2884. [PMID: 35518983 PMCID: PMC9059953 DOI: 10.1039/c8ra09569h] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2018] [Accepted: 01/08/2019] [Indexed: 12/05/2022] Open
Abstract
Fe3O4–Ag Janus composites were synthesized using a two-step solvothermal method. The optimal growth process was determined by investigating the relationship between the particle morphologies and reaction time. Magnetic and Raman spectroscopic measurements showed that the as-synthesized Janus composites have both good magnetic response and significant surface-enhanced Raman scattering (SERS) effects, as well as reproducibility. The calculated Raman enhancement factor reached an unprecedented magnitude of 109 compared with the values of other Fe3O4–Ag compounds. Furthermore, the SERS effect was exhibited even at a concentration of probe molecules as low as 10−13 M. This demonstrates that the as-synthesized Fe3O4–Ag Janus composite particles have promise for application as separable, highly sensitive SERS substrates. Fe3O4–Ag Janus composites were synthesized using a two-step solvothermal method.![]()
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Affiliation(s)
- Yanlin Li
- Key Laboratory of Advanced Functional Materials and Mesoscopic Physics
- School of Science
- Xi'an Jiaotong University
- Xi'an 710049
- China
| | - Sen Yang
- Key Laboratory of Advanced Functional Materials and Mesoscopic Physics
- School of Science
- Xi'an Jiaotong University
- Xi'an 710049
- China
| | - Xuegang Lu
- Key Laboratory of Advanced Functional Materials and Mesoscopic Physics
- School of Science
- Xi'an Jiaotong University
- Xi'an 710049
- China
| | - Wenyuan Duan
- Key Laboratory of Advanced Functional Materials and Mesoscopic Physics
- School of Science
- Xi'an Jiaotong University
- Xi'an 710049
- China
| | - Toshihiro Moriga
- Department of Chemical Science and Technology
- Graduates School of Advanced Technology and Science
- Tokushima University
- Tokushima 770-8506
- Japan
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Zhu N, Ji H, Yu P, Niu J, Farooq MU, Akram MW, Udego IO, Li H, Niu X. Surface Modification of Magnetic Iron Oxide Nanoparticles. NANOMATERIALS (BASEL, SWITZERLAND) 2018; 8:E810. [PMID: 30304823 PMCID: PMC6215286 DOI: 10.3390/nano8100810] [Citation(s) in RCA: 214] [Impact Index Per Article: 35.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/28/2018] [Revised: 09/26/2018] [Accepted: 10/05/2018] [Indexed: 12/11/2022]
Abstract
Functionalized iron oxide nanoparticles (IONPs) are of great interest due to wide range applications, especially in nanomedicine. However, they face challenges preventing their further applications such as rapid agglomeration, oxidation, etc. Appropriate surface modification of IONPs can conquer these barriers with improved physicochemical properties. This review summarizes recent advances in the surface modification of IONPs with small organic molecules, polymers and inorganic materials. The preparation methods, mechanisms and applications of surface-modified IONPs with different materials are discussed. Finally, the technical barriers of IONPs and their limitations in practical applications are pointed out, and the development trends and prospects are discussed.
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Affiliation(s)
- Nan Zhu
- School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 610054, China.
| | - Haining Ji
- School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 610054, China.
| | - Peng Yu
- Institute of Fundamental and Frontier Science, University of Electronic Science and Technology, Chengdu 610054, China.
| | - Jiaqi Niu
- School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 610054, China.
| | - M U Farooq
- Institute of Fundamental and Frontier Science, University of Electronic Science and Technology, Chengdu 610054, China.
| | - M Waseem Akram
- Institute of Fundamental and Frontier Science, University of Electronic Science and Technology, Chengdu 610054, China.
| | - I O Udego
- Institute of Fundamental and Frontier Science, University of Electronic Science and Technology, Chengdu 610054, China.
| | - Handong Li
- School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 610054, China.
| | - Xiaobin Niu
- School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 610054, China.
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Lei H, Wang K, Ji X, Cui D. Contactless Measurement of Magnetic Nanoparticles on Lateral Flow Strips Using Tunneling Magnetoresistance (TMR) Sensors in Differential Configuration. SENSORS (BASEL, SWITZERLAND) 2016; 16:E2130. [PMID: 27983659 PMCID: PMC5191110 DOI: 10.3390/s16122130] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/07/2016] [Revised: 12/07/2016] [Accepted: 12/12/2016] [Indexed: 02/04/2023]
Abstract
Magnetic nanoparticles (MNPs) are commonly used in biomedical detection due to their capability to bind with some specific antibodies. Quantification of biological entities could be realized by measuring the magnetic response of MNPs after the binding process. This paper presents a contactless scanning prototype based on tunneling magnetoresistance (TMR) sensors for quantification of MNPs present in lateral flow strips (LFSs). The sensing unit of the prototype composes of two active TMR elements, which are parallel and closely arranged to form a differential sensing configuration in a perpendicular magnetic field. Geometrical parameters of the configuration are optimized according to theoretical analysis of the stray magnetic field produced by the test line (T-line) while strips being scanned. A brief description of our prototype and the sample preparation is presented. Experimental results show that the prototype exhibits the performance of high sensitivity and strong anti-interference ability. Meanwhile, the detection speed has been improved compared with existing similar techniques. The proposed prototype demonstrates a good sensitivity for detecting samples containing human chorionic gonadotropin (hCG) at a concentration of 25 mIU/mL. The T-line produced by the sample with low concentration is almost beyond the visual limit and produces a maximum stray magnetic field some 0.247 mOe at the sensor in the x direction.
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Affiliation(s)
- Huaming Lei
- Department of Instrument Science and Engineering, Shanghai Jiaotong University, Shanghai 200240, China.
- Shanghai Engineering Research Center for Intelligent Diagnosis and Treatment Instrument, Shanghai 200240, China.
| | - Kan Wang
- Department of Instrument Science and Engineering, Shanghai Jiaotong University, Shanghai 200240, China.
- Shanghai Engineering Research Center for Intelligent Diagnosis and Treatment Instrument, Shanghai 200240, China.
| | - Xiaojun Ji
- Department of Instrument Science and Engineering, Shanghai Jiaotong University, Shanghai 200240, China.
- Shanghai Engineering Research Center for Intelligent Diagnosis and Treatment Instrument, Shanghai 200240, China.
| | - Daxiang Cui
- Department of Instrument Science and Engineering, Shanghai Jiaotong University, Shanghai 200240, China.
- Shanghai Engineering Research Center for Intelligent Diagnosis and Treatment Instrument, Shanghai 200240, China.
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Gao S, Liu X, Zhao C, Su M, Jiang H, Wang X. Novel multifunctional nanospheres of Zn 1/3Fe 8/3O 4@Ag: synthesis, properties and application for multi-modality tumor imaging. J Mater Chem B 2016; 4:6510-6515. [DOI: 10.1039/c6tb01943a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
New multifunctional nanospheres have been designed and synthesized through a green and facile strategy, which could be readily used in multi-modality tumor imaging through near-infrared fluorescence (NIRF) imaging, magnetic resonance imaging (MRI) and computed tomography (CT) imaging.
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Affiliation(s)
- Shengping Gao
- State Key Lab of Bioelectronics (Chien-Shiung WU Laboratory)
- Southeast University
- Nanjing 210096
- China
- College of Renewable Energy and Advanced Materials
| | - Xiaoli Liu
- State Key Lab of Bioelectronics (Chien-Shiung WU Laboratory)
- Southeast University
- Nanjing 210096
- China
| | - Chunqiu Zhao
- State Key Lab of Bioelectronics (Chien-Shiung WU Laboratory)
- Southeast University
- Nanjing 210096
- China
| | - Meina Su
- State Key Lab of Bioelectronics (Chien-Shiung WU Laboratory)
- Southeast University
- Nanjing 210096
- China
| | - Hui Jiang
- State Key Lab of Bioelectronics (Chien-Shiung WU Laboratory)
- Southeast University
- Nanjing 210096
- China
| | - Xuemei Wang
- State Key Lab of Bioelectronics (Chien-Shiung WU Laboratory)
- Southeast University
- Nanjing 210096
- China
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Chowdhury S, Basu A, Kundu S. Green synthesis of protein capped silver nanoparticles from phytopathogenic fungus Macrophomina phaseolina (Tassi) Goid with antimicrobial properties against multidrug-resistant bacteria. NANOSCALE RESEARCH LETTERS 2014; 9:365. [PMID: 25114655 PMCID: PMC4114801 DOI: 10.1186/1556-276x-9-365] [Citation(s) in RCA: 95] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/17/2014] [Accepted: 07/19/2014] [Indexed: 05/18/2023]
Abstract
In recent years, green synthesis of nanoparticles, i.e., synthesizing nanoparticles using biological sources like bacteria, algae, fungus, or plant extracts have attracted much attention due to its environment-friendly and economic aspects. The present study demonstrates an eco-friendly and low-cost method of biosynthesis of silver nanoparticles using cell-free filtrate of phytopathogenic fungus Macrophomina phaseolina. UV-visible spectrum showed a peak at 450 nm corresponding to the plasmon absorbance of silver nanoparticles. Scanning electron microscopy (SEM), atomic force microscopy (AFM), and transmission electron microscopy (TEM) revealed the presence of spherical silver nanoparticles of the size range 5 to 40 nm, most of these being 16 to 20 nm in diameter. X-ray diffraction (XRD) spectrum of the nanoparticles exhibited 2θ values corresponding to silver nanoparticles. These nanoparticles were found to be naturally protein coated. SDS-PAGE analysis showed the presence of an 85-kDa protein band responsible for capping and stabilization of the silver nanoparticles. Antimicrobial activities of the silver nanoparticles against human as well as plant pathogenic multidrug-resistant bacteria were assayed. The particles showed inhibitory effect on the growth kinetics of human and plant bacteria. Furthermore, the genotoxic potential of the silver nanoparticles with increasing concentrations was evaluated by DNA fragmentation studies using plasmid DNA.
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Affiliation(s)
- Supriyo Chowdhury
- Molecular and Applied Mycology and Plant Pathology Laboratory, Department of Botany, University of Calcutta, 35, Ballygunge Circular Road, Kolkata 700019, India
| | - Arpita Basu
- Molecular and Applied Mycology and Plant Pathology Laboratory, Department of Botany, University of Calcutta, 35, Ballygunge Circular Road, Kolkata 700019, India
| | - Surekha Kundu
- Molecular and Applied Mycology and Plant Pathology Laboratory, Department of Botany, University of Calcutta, 35, Ballygunge Circular Road, Kolkata 700019, India
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