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Amirahmadi M, Hosseinkhani S, Hosseini M, Yaghmei P, Heydari A. Fe 3O 4@SiO 2@NiAl-LDH microspheres implication in separation, kinetic and structural properties of phenylalanine dehydrogenase. Heliyon 2023; 9:e19429. [PMID: 37809670 PMCID: PMC10558515 DOI: 10.1016/j.heliyon.2023.e19429] [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: 06/01/2023] [Revised: 08/12/2023] [Accepted: 08/22/2023] [Indexed: 10/10/2023] Open
Abstract
Fe3O4@SiO2@NiAl-LDH three-components microsphere contains a Fe3O4@SiO2 magnetic core and a layered double hydroxide with nickel cation provide the binding ability to (His)-tagged-protein and exhibits high performance in protein separation and purification. The morphology and chemistry of the synthesized Fe3O4@SiO2@NiAl-LDH microspheres were characterized by energy-dispersive X-ray spectroscopy (EDX), scanning electron microscopy (SEM), X-ray diffraction (XRD), Fourier transform infrared (FTIR), vibrating sample magnetometer (VSM), Dynamic light scattering (DLS). Purified enzyme was assesed with SDS-PAGE (sodium dodecyl sulfate-polyacrylamide gel electrophoresis and intrinsic fluorescence spectroscopy. In this study, the separation of phenylalanine dehydrogenase (PheDH) by Fe3O4@SiO2@NiAl -LDH was performed and the effect of microsphere was investigated on the kinetic and structural properties of PheDH. After purification, kinetic parameters such as Km, Vmax, Kcat, kcat/Km, optimum temperature, thermal stability, and and activation energy were evaluated and compared according to the mentioned methods. The interaction between the enzyme and the microsphere displayed a high performance in protein binding capacity. The results also revealed that the kinetic parameters of the enzyme changed in a dose-dependent manner in the presence of a microsphere. Moreover, the results of intrinsic fluorescence and Circular Dichroism (CD) confirmed the structural changes of the protein in the interaction with the microsphere.
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Affiliation(s)
- Mozhgan Amirahmadi
- Department of Biochemistry, Faculty of Basic Sciences, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - Saman Hosseinkhani
- Department of Biochemistry, Faculty of Biological Sciences, Tarbiat Modares University, Tehran 14115-175, Iran
| | - Morteza Hosseini
- Department of Life Science Engineering, Faculty of New Sciences & Technologies, University of Tehran, Tehran 1417614418, Iran
| | - Paricher Yaghmei
- Department of Biochemistry, Faculty of Basic Sciences, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - Akbar Heydari
- Chemistry Department, Tarbiat Modares University, P.O. Box 14155-4838, Tehran, Iran
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2
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Rizvi MH, Wang R, Schubert J, Crumpler WD, Rossner C, Oldenburg AL, Fery A, Tracy JB. Magnetic Alignment for Plasmonic Control of Gold Nanorods Coated with Iron Oxide Nanoparticles. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2022; 34:e2203366. [PMID: 35679599 DOI: 10.1002/adma.202203366] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/14/2022] [Revised: 06/03/2022] [Indexed: 06/15/2023]
Abstract
Plasmonic nanoparticles that can be manipulated with magnetic fields are of interest for advanced optical applications, diagnostics, imaging, and therapy. Alignment of gold nanorods yields strong polarization-dependent extinction, and use of magnetic fields is appealing because they act through space and can be quickly switched. In this work, cationic polyethyleneimine-functionalized superparamagnetic Fe3 O4 nanoparticles (NPs) are deposited on the surface of anionic gold nanorods coated with bovine serum albumin. The magnetic gold nanorods (MagGNRs) obtained through mixing maintain the distinct optical properties of plasmonic gold nanorods that are minimally perturbed by the magnetic overcoating. Magnetic alignment of the MagGNRs arising from magnetic dipolar interactions on the anisotropic gold nanorod core is comprehensively characterized, including structural characterization and enhancement (suppression) of the longitudinal surface plasmon resonance and suppression (enhancement) of the transverse surface plasmon resonance for light polarized parallel (orthogonal) to the magnetic field. The MagGNRs can also be driven in rotating magnetic fields to rotate at frequencies of at least 17 Hz. For suitably large gold nanorods (148 nm long) and Fe3 O4 NPs (13.4 nm diameter), significant alignment is possible even in modest (<500 Oe) magnetic fields. An analytical model provides a unified understanding of the magnetic alignment of MagGNRs.
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Affiliation(s)
- Mehedi H Rizvi
- Department of Materials Science and Engineering, North Carolina State University, Raleigh, NC, 27695, USA
| | - Ruosong Wang
- Leibniz-Institut für Polymerforschung Dresden e.V., Institute for Physical Chemistry and Polymer Physics, 01069, Dresden, Germany
| | - Jonas Schubert
- Leibniz-Institut für Polymerforschung Dresden e.V., Institute for Physical Chemistry and Polymer Physics, 01069, Dresden, Germany
| | - William D Crumpler
- Department of Materials Science and Engineering, North Carolina State University, Raleigh, NC, 27695, USA
| | - Christian Rossner
- Leibniz-Institut für Polymerforschung Dresden e.V., Institute for Physical Chemistry and Polymer Physics, 01069, Dresden, Germany
- Dresden Center for Intelligent Materials (DCIM), Technische Universität Dresden, 01069, Dresden, Germany
| | - Amy L Oldenburg
- Department of Physics and Astronomy, University of North Carolina, Chapel Hill, NC, 27599, USA
| | - Andreas Fery
- Leibniz-Institut für Polymerforschung Dresden e.V., Institute for Physical Chemistry and Polymer Physics, 01069, Dresden, Germany
- Chair for Physical Chemistry of Polymeric Materials, Technische Universität Dresden, 01062, Dresden, Germany
| | - Joseph B Tracy
- Department of Materials Science and Engineering, North Carolina State University, Raleigh, NC, 27695, USA
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3
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Abstract
Colloidal self-assembly refers to a solution-processed assembly of nanometer-/micrometer-sized, well-dispersed particles into secondary structures, whose collective properties are controlled by not only nanoparticle property but also the superstructure symmetry, orientation, phase, and dimension. This combination of characteristics makes colloidal superstructures highly susceptible to remote stimuli or local environmental changes, representing a prominent platform for developing stimuli-responsive materials and smart devices. Chemists are achieving even more delicate control over their active responses to various practical stimuli, setting the stage ready for fully exploiting the potential of this unique set of materials. This review addresses the assembly of colloids into stimuli-responsive or smart nanostructured materials. We first delineate the colloidal self-assembly driven by forces of different length scales. A set of concepts and equations are outlined for controlling the colloidal crystal growth, appreciating the importance of particle connectivity in creating responsive superstructures. We then present working mechanisms and practical strategies for engineering smart colloidal assemblies. The concepts underpinning separation and connectivity control are systematically introduced, allowing active tuning and precise prediction of the colloidal crystal properties in response to external stimuli. Various exciting applications of these unique materials are summarized with a specific focus on the structure-property correlation in smart materials and functional devices. We conclude this review with a summary of existing challenges in colloidal self-assembly of smart materials and provide a perspective on their further advances to the next generation.
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Affiliation(s)
- Zhiwei Li
- Department of Chemistry, University of California, Riverside, California 92521, United States
| | - Qingsong Fan
- Department of Chemistry, University of California, Riverside, California 92521, United States
| | - Yadong Yin
- Department of Chemistry, University of California, Riverside, California 92521, United States
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4
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Abstract
Magnetic nanostructures and nanomaterials play essential roles in modern bio medicine and technology. Proper surface functionalization of nanoparticles (NPs) allows the selective bonding thus application of magnetic forces to a vast range of cellular structures and biomolecules. However, the spherical geometry of NPs poises a series of limitations in various potential applications. Mostly, typical spherical core shell structure consists of magnetic and non-magnetic layers have little tunability in terms of magnetic responses, and their single surface functionality also limits chemical activity and selectivity. In comparison to spherical NPs, nanowires (NWs) possess more degrees of freedom in achieving magnetic and surface chemical tenability. In addition to adjustment of magnetic anisotropy and inter-layer interactions, another important feature of NWs is their ability to combine different components along their length, which can result in diverse bio-magnetic applications. Magnetic NWs have become the candidate material for biomedical applications owing to their high magnetization, cheapness and cost effective synthesis. With large magnetic moment, anisotropy, biocompatibility and low toxicity, magnetic NWs have been recently used in living cell manipulation, magnetic cell separation and magnetic hyperthermia. In this review, the basic concepts of magnetic characteristics of nanoscale objects and the influences of aspect ratio, composition and diameter on magnetic properties of NWs are addressed. Some underpinning physical principles of magnetic hyperthermia (MH), magnetic resonance imaging (MRI) and magnetic separation (MS) have been discussed. Finally, recent studies on magnetic NWs for the applications in MH, MRI and MS were discussed in detail.
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Affiliation(s)
- Aiman Mukhtar
- The State Key Laboratory of Refractories and Metallurgy, Hubei Province Key Laboratory of Systems Science in Metallurgical Process, International Research Institute for Steel Technology, Wuhan University of Science and Technology, Wuhan, People's Republic of China
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5
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Zou X, Zhang Y, Yuan J, Wang Z, Zeng R, Li K, Zhao Y, Zhang Z. A porous nano-adsorbent with dual functional groups for selective binding proteins with a low detection limit. RSC Adv 2020; 10:23270-23275. [PMID: 35520347 PMCID: PMC9054699 DOI: 10.1039/d0ra01193b] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2020] [Accepted: 05/14/2020] [Indexed: 11/21/2022] Open
Abstract
Porous nano-adsorbent with dual functional groups for selective binding proteins with a low detection limit.
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Affiliation(s)
- Xueyan Zou
- Engineering Research Center for Nanomaterials
- Henan University
- Kaifeng 475004
- China
- National & Local Joint Engineering Research Center for Applied Technology of Hybrid Nanomaterials
| | - Yu Zhang
- College of Chemistry and Chemical Engineering
- Henan University
- Kaifeng 475004
- China
| | - Jinqiu Yuan
- Institute of Technology
- Henan University Minsheng College
- Kaifeng 459000
- China
| | - Zhibo Wang
- College of Chemistry and Chemical Engineering
- Henan University
- Kaifeng 475004
- China
| | - Rui Zeng
- Institute of Technology
- Henan University Minsheng College
- Kaifeng 459000
- China
| | - Kun Li
- State Key Laboratory of Crop Stress Adaptation and Improvement
- Kaifeng 459000
- China
| | - Yanbao Zhao
- Engineering Research Center for Nanomaterials
- Henan University
- Kaifeng 475004
- China
- National & Local Joint Engineering Research Center for Applied Technology of Hybrid Nanomaterials
| | - Zhijun Zhang
- Engineering Research Center for Nanomaterials
- Henan University
- Kaifeng 475004
- China
- National & Local Joint Engineering Research Center for Applied Technology of Hybrid Nanomaterials
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6
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Abstract
Magnetic Janus particles bring together the ability of Janus particles to perform two different functions at the same time in a single particle with magnetic properties enabling their remote manipulation, which allows headed movement and orientation. This article reviews the preparation procedures and applications in the (bio)sensing field of static and self-propelled magnetic Janus particles. The main progress in the fabrication procedures and the applicability of these particles are critically discussed, also giving some clues on challenges to be dealt with and future prospects. The promising characteristics of magnetic Janus particles in the (bio)sensing field, providing increased kinetics and sensitivity and decreased times of analysis derived from the use of external magnetic fields in their manipulation, allows foreseeing their great and exciting potential in the medical and environmental remediation fields.
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7
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Kwak M, Jung I, Kang YG, Lee DK, Park S. Multi-block magnetic nanorods for controlled drug release modulated by Fourier transform surface plasmon resonance. NANOSCALE 2018; 10:18690-18695. [PMID: 30270365 DOI: 10.1039/c8nr05412f] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Stimuli-responsive tunable drug release using nanocarriers is an important subject in smart drug delivery systems. Specifically, magnetic-responsive nanocarriers provide a great opportunity for remote control as well as on-demand command. To effectively utilize magnetic-responsive nanocarriers in vivo and in vitro, drug release should not only be controlled in an efficient way, but also monitored in situ. To satisfy those prerequisites, a template-assisted electrochemical deposition method can be a great option for the synthesis of designer materials that are targeted for specific purposes. Here, we synthesized plasmonic-magnetic nanocarriers by template-assisted electrochemical deposition and covered their surface with a silica shell for drug loading. By appropriately designing the blocks, we synthesized nanocarriers that were plasmonically active and magnetically active with spaces for drug payload. These nanocarriers could be modulated under an external magnetic field and their rotation (or agitation) could be monitored by Fourier transform conversion. Using our nanocarriers, we systematically investigated the tunable release of the anticancer drug doxorubicin as a function of the external magnetic field. Additionally, by applying this modulation system to an in vitro system using HeLa cells we were able to not only monitor the modulation systems but also tailor the drug release in a controlled manner. We expect that our approach will contribute to understanding of nanocarriers in a simulative manner in vitro.
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Affiliation(s)
- Min Kwak
- Department of Chemistry, Sungkyunkwan University, Suwon, 16419, South Korea.
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8
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Xu Q, Huang T, Li S, Li K, Li C, Liu Y, Wang Y, Yu C, Zhou Y. Emulsion‐Assisted Polymerization‐Induced Hierarchical Self‐Assembly of Giant Sea Urchin‐like Aggregates on a Large Scale. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201802833] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Qingsong Xu
- School of Chemistry and Chemical EngineeringState Key Laboratory of Metal Matrix CompositesShanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 China
| | - Tong Huang
- School of Chemistry and Chemical EngineeringState Key Laboratory of Metal Matrix CompositesShanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 China
| | - Shanlong Li
- School of Chemistry and Chemical EngineeringState Key Laboratory of Metal Matrix CompositesShanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 China
| | - Ke Li
- School of Chemistry and Chemical EngineeringState Key Laboratory of Metal Matrix CompositesShanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 China
| | - Chuanlong Li
- School of Chemistry and Chemical EngineeringState Key Laboratory of Metal Matrix CompositesShanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 China
| | - Yannan Liu
- School of Chemistry and Chemical EngineeringState Key Laboratory of Metal Matrix CompositesShanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 China
| | - Yuling Wang
- School of Chemistry and Chemical EngineeringState Key Laboratory of Metal Matrix CompositesShanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 China
| | - Chunyang Yu
- School of Chemistry and Chemical EngineeringState Key Laboratory of Metal Matrix CompositesShanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 China
| | - Yongfeng Zhou
- School of Chemistry and Chemical EngineeringState Key Laboratory of Metal Matrix CompositesShanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 China
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9
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Xu Q, Huang T, Li S, Li K, Li C, Liu Y, Wang Y, Yu C, Zhou Y. Emulsion‐Assisted Polymerization‐Induced Hierarchical Self‐Assembly of Giant Sea Urchin‐like Aggregates on a Large Scale. Angew Chem Int Ed Engl 2018; 57:8043-8047. [DOI: 10.1002/anie.201802833] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2018] [Revised: 05/02/2018] [Indexed: 12/12/2022]
Affiliation(s)
- Qingsong Xu
- School of Chemistry and Chemical EngineeringState Key Laboratory of Metal Matrix CompositesShanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 China
| | - Tong Huang
- School of Chemistry and Chemical EngineeringState Key Laboratory of Metal Matrix CompositesShanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 China
| | - Shanlong Li
- School of Chemistry and Chemical EngineeringState Key Laboratory of Metal Matrix CompositesShanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 China
| | - Ke Li
- School of Chemistry and Chemical EngineeringState Key Laboratory of Metal Matrix CompositesShanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 China
| | - Chuanlong Li
- School of Chemistry and Chemical EngineeringState Key Laboratory of Metal Matrix CompositesShanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 China
| | - Yannan Liu
- School of Chemistry and Chemical EngineeringState Key Laboratory of Metal Matrix CompositesShanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 China
| | - Yuling Wang
- School of Chemistry and Chemical EngineeringState Key Laboratory of Metal Matrix CompositesShanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 China
| | - Chunyang Yu
- School of Chemistry and Chemical EngineeringState Key Laboratory of Metal Matrix CompositesShanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 China
| | - Yongfeng Zhou
- School of Chemistry and Chemical EngineeringState Key Laboratory of Metal Matrix CompositesShanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 China
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10
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Zou X, Yang F, Sun X, Qin M, Zhao Y, Zhang Z. Functionalized Nano-adsorbent for Affinity Separation of Proteins. NANOSCALE RESEARCH LETTERS 2018; 13:165. [PMID: 29846826 PMCID: PMC5976561 DOI: 10.1186/s11671-018-2531-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/22/2017] [Accepted: 04/16/2018] [Indexed: 05/07/2023]
Abstract
Thiol-functionalized silica nanospheres (SiO2-SH NSs) with an average diameter of 460 nm were synthesized through a hydrothermal route. Subsequently, the prepared SiO2-SH NSs were modified by SnO2 quantum dots to afford SnO2/SiO2 composite NSs possessing obvious fluorescence, which could be used to trace the target protein. The SnO2/SiO2 NSs were further modified by reduced glutathione (GSH) to obtain SnO2/SiO2-GSH NSs, which can specifically separate glutathione S-transferase-tagged (GST-tagged) protein. Moreover, the peroxidase activity of glutathione peroxidase 3 (GPX3) separated from SnO2/SiO2-GSH NSs in vitro was evaluated. Results show that the prepared SnO2/SiO2-GSH NSs exhibit negligible nonspecific adsorption, high concentration of protein binding (7.4 mg/g), and good reused properties. In the meantime, the GST-tagged GPX3 separated by these NSs can retain its redox state and peroxidase activity. Therefore, the prepared SnO2/SiO2-GSH NSs might find promising application in the rapid separation and purification of GST-tagged proteins.
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Affiliation(s)
- Xueyan Zou
- Engineering Research Center for Nanomaterials, Henan University, Kaifeng, 475004 China
- National & Local Joint Engineering Research Center for Applied Technology of Hybrid Nanomaterials, Henan University, Kaifeng, 475004 China
- Collaborative Innovation Center of Nano Functional Materials and Applications of Henan Province, Henan University, Kaifeng, 475004 China
| | - Fengbo Yang
- Institute of Plant Stress Biology-State Key Laboratory of Cotton Biology, Henan University, Kaifeng, 475004 China
| | - Xin Sun
- Engineering Research Center for Nanomaterials, Henan University, Kaifeng, 475004 China
| | - Mingming Qin
- Engineering Research Center for Nanomaterials, Henan University, Kaifeng, 475004 China
| | - Yanbao Zhao
- Engineering Research Center for Nanomaterials, Henan University, Kaifeng, 475004 China
- National & Local Joint Engineering Research Center for Applied Technology of Hybrid Nanomaterials, Henan University, Kaifeng, 475004 China
- Collaborative Innovation Center of Nano Functional Materials and Applications of Henan Province, Henan University, Kaifeng, 475004 China
| | - Zhijun Zhang
- Engineering Research Center for Nanomaterials, Henan University, Kaifeng, 475004 China
- National & Local Joint Engineering Research Center for Applied Technology of Hybrid Nanomaterials, Henan University, Kaifeng, 475004 China
- Collaborative Innovation Center of Nano Functional Materials and Applications of Henan Province, Henan University, Kaifeng, 475004 China
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11
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Jung I, Yoo H, Jang HJ, Cho S, Lee K, Hong S, Park S. Fourier Transform Surface Plasmon Resonance (FTSPR) with Gyromagnetic Plasmonic Nanorods. Angew Chem Int Ed Engl 2018; 57:1841-1845. [PMID: 29266670 DOI: 10.1002/anie.201710619] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2017] [Revised: 12/13/2017] [Indexed: 12/28/2022]
Abstract
An unprecedented active and dynamic sensing platform based on a LSPR configuration that is modulated by using an external magnetic field is reported. Electrochemically synthesized Au/Fe/Au nanorods exhibited plasmonically active behavior through plasmonic coupling, and the middle ferromagnetic Fe block responded to a magnetic impetus, allowing the nanorods to be modulated. The shear force variation induced by the specific binding events between antigens and antibodies on the nanorod surface is used to enhance the sensitivity of detection of antigens in the plasmonics-based sensor application. As a proof-of-concept, influenza A virus (HA1) was used as a target protein. The limit of detection was enhanced by two orders of magnitude compared to that of traditional LSPR sensing.
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Affiliation(s)
- Insub Jung
- Department of Chemistry and Energy Science, Sungkyunkwan University, Suwon, 440-746, South Korea
| | - Haneul Yoo
- Department of Physics and Astronomy, and Institute of Applied Physics, Seoul National University, Seoul, 151-747, South Korea
| | - Hee-Jeong Jang
- Department of Chemistry and Energy Science, Sungkyunkwan University, Suwon, 440-746, South Korea
| | - Sanghyun Cho
- Department of Chemistry and Energy Science, Sungkyunkwan University, Suwon, 440-746, South Korea
| | - Kyungeun Lee
- Department of Chemistry and Energy Science, Sungkyunkwan University, Suwon, 440-746, South Korea
| | - Seunghun Hong
- Department of Physics and Astronomy, and Institute of Applied Physics, Seoul National University, Seoul, 151-747, South Korea
| | - Sungho Park
- Department of Chemistry and Energy Science, Sungkyunkwan University, Suwon, 440-746, South Korea
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12
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Jung I, Yoo H, Jang HJ, Cho S, Lee K, Hong S, Park S. Fourier Transform Surface Plasmon Resonance (FTSPR) with Gyromagnetic Plasmonic Nanorods. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201710619] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Insub Jung
- Department of Chemistry and Energy Science; Sungkyunkwan University; Suwon 440-746 South Korea
| | - Haneul Yoo
- Department of Physics and Astronomy, and Institute of Applied Physics; Seoul National University; Seoul 151-747 South Korea
| | - Hee-Jeong Jang
- Department of Chemistry and Energy Science; Sungkyunkwan University; Suwon 440-746 South Korea
| | - Sanghyun Cho
- Department of Chemistry and Energy Science; Sungkyunkwan University; Suwon 440-746 South Korea
| | - Kyungeun Lee
- Department of Chemistry and Energy Science; Sungkyunkwan University; Suwon 440-746 South Korea
| | - Seunghun Hong
- Department of Physics and Astronomy, and Institute of Applied Physics; Seoul National University; Seoul 151-747 South Korea
| | - Sungho Park
- Department of Chemistry and Energy Science; Sungkyunkwan University; Suwon 440-746 South Korea
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13
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Zhang Y, Zhang M, Yang J, Ding L, Zheng J, Xu J, Xiong S. Formation of Fe3O4@SiO2@C/Ni hybrids with enhanced catalytic activity and histidine-rich protein separation. NANOSCALE 2016; 8:15978-88. [PMID: 27539541 DOI: 10.1039/c6nr05078f] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
In this paper, we have developed an extended Stöber method to construct a Ni(2+)-polydopamine (PDA) complex thin coating on Fe3O4@SiO2 spheres, which can be carbonized to produce hybrid composites with metallic nickel nanoparticles embedded in a PDA-derived thin graphitic carbon layer (named Fe3O4@SiO2@C/Ni). Interestingly, by introducing a thin SiO2 spacer layer between PDA-Ni(2+) and Fe3O4, the reverse electron transfer from PDA to Fe3O4 is probably able to be suppressed in the calcination process, which leads to the in situ reduction of only Ni(2+) by PDA instead of Fe3O4 and Ni(2+). Consequently, the size and density of nickel nanoparticles on the surface of SiO2@Fe3O4 can be finely adjusted. Moreover, it is found that the ability of tuning nickel nanoparticles is mainly dependent on the thickness of the spacer layer. When the thickness of the SiO2 spacer is beyond the electron penetration depth, the size and density of nickel nanoparticles can be exactly tuned. The as-prepared Fe3O4@SiO2@C/Ni was employed as the catalyst to investigate the catalytic performance in the reduction of 4-nitrophenol (4-NP); furthermore, nickel nanoparticles decorated on Fe3O4@SiO2@C spheres display a strong affinity to His-tagged proteins (BHb and BSA) via a specific metal affinity force between polyhistidine groups and nickel nanoparticles.
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Affiliation(s)
- Yanwei Zhang
- College of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, Shanghai 201620, PR China.
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14
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Abstract
Janus particles, named after the two-faced Roman god Janus, have different surface makeups, structures or compartments on two sides. This review highlights recent advances in employing Janus particles as novel analytical tools for live cell imaging and biosensing. Unlike conventional particles used in analytical science, two-faced Janus particles provide asymmetry and directionality, and can combine different or even incompatible properties within a single particle. The broken symmetry enables imaging and quantification of rotational dynamics, revealing information beyond what traditional measurements offer. The spatial segregation of molecules on the surface of a single particle also allows analytical functions that would otherwise interfere with each other to be decoupled, opening up opportunities for novel multimodal analytical methods. We summarize here the development of Janus particles, a few general methods for their fabrication and, more importantly, the emerging and novel applications of Janus particles as multi-functional imaging probes and sensors.
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Affiliation(s)
- Yi Yi
- Department of Chemistry, Indiana University, Bloomington, IN 47405, USA.
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15
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Zhang M, Wang B, Zhang Y, Li W, Gan W, Xu J. Facile synthesis of magnetic hierarchical copper silicate hollow nanotubes for efficient adsorption and removal of hemoglobin. Dalton Trans 2016; 45:922-7. [DOI: 10.1039/c5dt04248h] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Novel magnetic hierarchical copper silicate hollow nanotubes were synthesized with SiO2/Fe3O4/Ag NWs as templates, which can be used to remove abundant proteins in human blood.
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Affiliation(s)
- Min Zhang
- College of Chemistry and Chemical Engineering
- Shanghai University of Engineering Science
- Shanghai 201620
- China
| | - Baoyu Wang
- College of Chemistry and Chemical Engineering
- Shanghai University of Engineering Science
- Shanghai 201620
- China
| | - Yanwei Zhang
- College of Chemistry and Chemical Engineering
- Shanghai University of Engineering Science
- Shanghai 201620
- China
| | - Weizhen Li
- College of Chemistry and Chemical Engineering
- Shanghai University of Engineering Science
- Shanghai 201620
- China
| | - Wenjun Gan
- College of Chemistry and Chemical Engineering
- Shanghai University of Engineering Science
- Shanghai 201620
- China
| | - Jingli Xu
- College of Chemistry and Chemical Engineering
- Shanghai University of Engineering Science
- Shanghai 201620
- China
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16
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Fratila RM, Rivera-Fernández S, de la Fuente JM. Shape matters: synthesis and biomedical applications of high aspect ratio magnetic nanomaterials. NANOSCALE 2015; 7:8233-8260. [PMID: 25877250 DOI: 10.1039/c5nr01100k] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
High aspect ratio magnetic nanomaterials possess anisotropic properties that make them attractive for biological applications. Their elongated shape enables multivalent interactions with receptors through the introduction of multiple targeting units on their surface, thus enhancing cell internalization. Moreover, due to their magnetic anisotropy, high aspect ratio nanomaterials can outperform their spherical analogues as contrast agents for magnetic resonance imaging (MRI) applications. In this review, we first describe the two main synthetic routes for the preparation of anisotropic magnetic nanomaterials: (i) direct synthesis (in which the anisotropic growth is directed by tuning the reaction conditions or by using templates) and (ii) assembly methods (in which the high aspect ratio is achieved by assembly from individual building blocks). We then provide an overview of the biomedical applications of anisotropic magnetic nanomaterials: magnetic separation and detection, targeted delivery and magnetic resonance imaging.
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Affiliation(s)
- Raluca M Fratila
- Instituto de Nanociencia de Aragon (INA), Universidad de Zaragoza, C/Mariano Esquillor s/n, 50018 Zaragoza, Spain.
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17
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Wang Y, Zhang M, Wang L, Li W, Zheng J, Xu J. Synthesis of hierarchical nickel anchored on Fe3O4@SiO2 and its successful utilization to remove the abundant proteins (BHb) in bovine blood. NEW J CHEM 2015. [DOI: 10.1039/c5nj00241a] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The synthesis of hierarchical nickel anchored on Fe3O4@SiO2 and their successful utilization to remove the abundant proteins (BHb) in bovine blood have been demonstrated.
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Affiliation(s)
- Yongtao Wang
- College of Chemistry and Chemical Engineering
- Shanghai University of Engineering Science
- Shanghai 201620
- China
| | - Min Zhang
- College of Chemistry and Chemical Engineering
- Shanghai University of Engineering Science
- Shanghai 201620
- China
| | - Linlin Wang
- College of Chemistry and Chemical Engineering
- Shanghai University of Engineering Science
- Shanghai 201620
- China
| | - Weizhen Li
- College of Chemistry and Chemical Engineering
- Shanghai University of Engineering Science
- Shanghai 201620
- China
| | - Jing Zheng
- College of Chemistry and Chemical Engineering
- Shanghai University of Engineering Science
- Shanghai 201620
- China
| | - Jingli Xu
- College of Chemistry and Chemical Engineering
- Shanghai University of Engineering Science
- Shanghai 201620
- China
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18
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Wang Y, Wang G, Xiao Y, Yang Y, Tang R. Yolk-shell nanostructured Fe3O4@NiSiO3 for selective affinity and magnetic separation of His-tagged proteins. ACS APPLIED MATERIALS & INTERFACES 2014; 6:19092-19099. [PMID: 25303145 DOI: 10.1021/am505041a] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Recent developments of nanotechnology encourage novel materials for facile separations and purifications of recombinant proteins, which are of great importance in disease diagnoses and treatments. We find that Fe3O4@NiSiO3 with yolk-shell nanostructure can be used to specifically purify histidine-tagged (His-tagged) proteins from mixtures of lysed cells with a recyclable process. Each individual nanoparticle composes by a mesoporous nickel silicate shell and a magnetic Fe3O4 core in the hollow inner, which is featured by its great loading efficiency and rapid response toward magnetic fields. The abundant Ni(2+) cations on the shell provide docking sites for selective coordination of histidine and the reversible release is induced by excess imidazole solution. Because of the Fe3O4 cores, the separation, concentration, and recycling of the nanocomposites become feasible under the controls of magnets. These characteristics would be highly beneficial in nanoparticle-based biomedical applications for targeted-drug delivery and biosensors.
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Affiliation(s)
- Yang Wang
- Center for Biomaterials and Biopathways, Department of Chemistry, Zhejiang University , Hangzhou, Zhejiang 310027, China
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19
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Synthesis of petal-like ferric oxide/cysteine architectures and their application in affinity separation of proteins. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2014; 34:468-73. [PMID: 24268283 DOI: 10.1016/j.msec.2013.09.046] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2013] [Revised: 08/28/2013] [Accepted: 09/29/2013] [Indexed: 11/20/2022]
Abstract
Petal-like ferric oxide/cysteine (FeOOH/Cys) architectures were prepared through a solvothermal route, which possessed high thiol group density. These thiol groups as binding sites can chelate Ni(2+) ions, which can be further used to enrich and separate his-tagged proteins directly from the mixture of lysed cells without sample pretreatment. These results show that the FeOOH/Cys architectures with immobilized Ni(2+) ions present negligible nonspecific protein adsorption and high protein adsorption capacity, with the saturation capacity being 88mg/g, which are especially suitable for purification of his-tagged proteins.
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20
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Billinge ER, Broom M, Platt M. Monitoring aptamer-protein interactions using tunable resistive pulse sensing. Anal Chem 2013; 86:1030-7. [PMID: 24380606 DOI: 10.1021/ac401764c] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Aptamers are short single-stranded pieces of DNA or RNA capable of binding to analytes with specificity and high affinity. Due to their comparable selectivity, stability, and cost, over the last two decades, aptamers have started to challenge antibodies in their use on many technology platforms. The binding event often leads to changes in the aptamer's secondary and tertiary structure; monitoring such changes has led to the creation of many new analytical sensors. Here, we demonstrate the use of a tunable resistive pulse sensing (TRPS) technology to monitor the interaction between several DNA aptamers and their target, thrombin. We immobilized the aptamers onto the surface of superparamagnetic beads, prior to their incubation with the thrombin protein. The protein binding to the aptamer caused a conformational change resulting in the shielding of the polyanion backbone; this was monitored by a change in the translocation time and pulse frequency of the particles traversing the pore. This signal was sensitive enough to allow the tagless detection of thrombin down to nanomolar levels. We further demonstrate the power of TRPS by performing real time detection and characterization of the aptamer-target interaction and measuring the association rates of the thrombin protein to the aptamer sequences.
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Affiliation(s)
- Emily R Billinge
- Department of Chemistry, Centre for Analytical Science, Loughborough University , Loughborough, Leicestershire LE11 3TU, United Kingdom
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21
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Su Y, Tang J, Yang H, Cheng Z. Multifunctional multisegmented Co/CoPt3 heterostructure nanowires. NANOSCALE 2013; 5:9709-9713. [PMID: 23989990 DOI: 10.1039/c3nr02767h] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Multisegmented (MS) Co/CoPt3 nanowires (NWs) have been successfully fabricated by a template-assisted pulsed electrodeposition process and the length of each Co and CoPt3 segment is controlled by the pulse durations. The MS NWs show both the characteristic surface plasmon absorption and catalytic properties of CoPt3 and the strong ferromagnetic properties of Co that are affected by the interactions between Co and CoPt3. Furthermore, the ferromagnetic, optical, and catalytic properties can be well modulated by mainly changing the length of the Co and CoPt3 segments, respectively. Such multifunction of MS nanowires can be exploited for recyclable catalysts and bioassays based on their magnetic-catalytic and magnetic-optical properties, respectively.
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Affiliation(s)
- Yikun Su
- Department of Materials Science and Engineering, Shen Zhen University, Shen Zhen 518060, P. R. China
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22
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Lan F, Wu Y, Hu H, Xie L, Gu Z. Superparamagnetic Fe3O4/PMMA composite nanospheres as a nanoplatform for multimodal protein separation. RSC Adv 2013. [DOI: 10.1039/c2ra22844k] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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23
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Koenigsmann C, Tan Z, Peng H, Sutter E, Jacobskind J, Wong SS. Multifunctional Nanochemistry: Ambient, Electroless, Template-Based Synthesis and Characterization of Segmented Bimetallic Pd/Au and Pd/Pt Nanowires as High-Performance Electrocatalysts and Nanomotors. Isr J Chem 2012. [DOI: 10.1002/ijch.201200052] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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24
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Platt M, Willmott GR, Lee GU. Resistive pulse sensing of analyte-induced multicomponent rod aggregation using tunable pores. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2012; 8:2436-44. [PMID: 22570187 DOI: 10.1002/smll.201200058] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2012] [Revised: 03/07/2012] [Indexed: 05/09/2023]
Abstract
Resistive pulse sensing is used to monitor individual and aggregated rod-shaped nanoparticles as they move through tunable pores in elastomeric membranes. By comparing particles of similar dimensions, it is demonstrated that the resistive pulse signal of a rod is fundamentally different from that of a sphere. Rods can be distinguished using two measurements: the blockade event magnitude (Δi(p) ), which reveals the particle's size, and the full width at half maximum (FWHM) duration, which relates to the particle's speed and length. While the observed Δi(p) values agree well with simulations, the measured FWHM times are much larger than expected. This increase in dwell time, caused by rods moving through the pore in various orientations, is not observed for spherical particles. These differences are exploited in a new agglutination assay using rod-shaped particles. By controlling the surface chemistry and location of the capture ligand, rods are made to form either long "end-on-end" or wide "side-on" aggregates upon the addition of an analyte. This observation will facilitate multiplexed detection in agglutination assays, as particles with a particular aspect ratio can be distinguished by two measurements. This is first demonstrated with a biotinylated target and avidin capture probe, followed by the detection of platelet-derived growth factor (PDGF-BB) using an aptamer capture probe, with limits of detection down to femtomolar levels.
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Affiliation(s)
- Mark Platt
- Centre for Nanomedicine, School of Chemistry and Chemical Biology, University College Dublin, Belfield, Dublin 4, Ireland.
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25
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Shao M, Ning F, Zhao J, Wei M, Evans DG, Duan X. Preparation of Fe3O4@SiO2@Layered Double Hydroxide Core–Shell Microspheres for Magnetic Separation of Proteins. J Am Chem Soc 2012; 134:1071-7. [DOI: 10.1021/ja2086323] [Citation(s) in RCA: 638] [Impact Index Per Article: 53.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Mingfei Shao
- State Key
Laboratory of Chemical Resource Engineering,
Beijing University of Chemical Technology, Beijing 100029, Peopleʼs
Republic of China
| | - Fanyu Ning
- State Key
Laboratory of Chemical Resource Engineering,
Beijing University of Chemical Technology, Beijing 100029, Peopleʼs
Republic of China
| | - Jingwen Zhao
- State Key
Laboratory of Chemical Resource Engineering,
Beijing University of Chemical Technology, Beijing 100029, Peopleʼs
Republic of China
| | - Min Wei
- State Key
Laboratory of Chemical Resource Engineering,
Beijing University of Chemical Technology, Beijing 100029, Peopleʼs
Republic of China
| | - David G. Evans
- State Key
Laboratory of Chemical Resource Engineering,
Beijing University of Chemical Technology, Beijing 100029, Peopleʼs
Republic of China
| | - Xue Duan
- State Key
Laboratory of Chemical Resource Engineering,
Beijing University of Chemical Technology, Beijing 100029, Peopleʼs
Republic of China
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26
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Design and characterization of Ni2+ and Co2+ decorated Porous Magnetic Silica spheres synthesized by hydrothermal-assisted modified-Stöber method for His-tagged proteins separation. J Colloid Interface Sci 2012; 365:156-62. [DOI: 10.1016/j.jcis.2011.09.051] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2011] [Revised: 09/15/2011] [Accepted: 09/16/2011] [Indexed: 11/23/2022]
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27
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Guo L, Wang Y, Wang Y, Zhang J, Dong P. Crystal structure and up- and down-conversion properties of Yb3+, Ho3+ codoped BaGdF5 solid-solution with different morphologies. CrystEngComm 2012. [DOI: 10.1039/c2ce06616e] [Citation(s) in RCA: 63] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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28
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Zhang Y, DaSilva M, Ashall B, Doyle G, Zerulla D, Sands TD, Lee GU. Magnetic manipulation and optical imaging of an active plasmonic single-particle Fe-Au nanorod. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2011; 27:15292-15298. [PMID: 22046955 DOI: 10.1021/la203863p] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Superparamagnetic microbeads play an important role in a number of scientific and biotechnology applications including single-molecule force measurements, affinity separation, and in vivo and in vitro diagnostics. Magneto-optically active nanorods composed of single-crystalline Au and polycrystalline Fe segments were synthesized with diameters of 60 or 295 nm using templated electrodeposition. The Fe section was magnetically soft and had a saturation magnetization of approximately 200 emu/g, resulting in a 10-fold increase in magnetization relative to that iron oxide nanoparticles. The strong plasmonic response of the Au segment of the rod in both the longitudinal and transverse directions made it possible to detect the orientation of a single rod in a polarized light microscope with nanometer resolution. These nanorods provide significantly improved physical properties over iron oxide superparamagnetic beads, making it possible to simultaneously manipulate and monitor the orientation of biomolecules with well-defined forces at the nanometer scale.
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Affiliation(s)
- Yong Zhang
- School of Chemistry and Chemical Biology, University College Dublin, Dublin 4, Ireland
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29
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Liu Z, Li M, Yang X, Yin M, Ren J, Qu X. The use of multifunctional magnetic mesoporous core/shell heteronanostructures in a biomolecule separation system. Biomaterials 2011; 32:4683-90. [DOI: 10.1016/j.biomaterials.2011.03.038] [Citation(s) in RCA: 84] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2011] [Accepted: 03/04/2011] [Indexed: 10/18/2022]
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30
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Li P, Mahmood A, Lee GU. Flow-enhanced nonlinear magnetophoresis for high-resolution bioseparation. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2011; 27:6496-503. [PMID: 21506584 DOI: 10.1021/la105126n] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
A new mode of transport is described that was capable of high-resolution separation of superparamagnetic materials from complex mixtures based on their size. Laminar flow and a rotating external magnetic field were applied to superparamagnetic beads assembled on a semiperiodic micromagnet array. Beads at the edge of the micromagnet array oscillated in-phase with the external magnetic field with an amplitude that decreased with increasing frequency, ω, until they reached an immobilization frequency, ω(i), where the beads stopped moving. Laminar flow along the edge of the array could be tuned to sweep the beads for which ω < ω(i) downstream at a velocity that increased with size while leaving beads for which ω > ω(i) undisturbed. Flow-enhanced nonlinear magnetophoresis (F-NLM) promises to enable multiple superparamagnetc bead types to be used in the fractionation of cells and implementation of diagnostic assays.
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Affiliation(s)
- Peng Li
- School of Chemistry and Chemical Biology, University College Dublin, Belfield, Dublin 4, Ireland
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31
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Chun J, Seo SW, Jung GY, Lee J. Easy access to efficient magnetically recyclable separation of histidine-tagged proteins using superparamagnetic nickel ferrite nanoparticle clusters. ACTA ACUST UNITED AC 2011. [DOI: 10.1039/c0jm04089d] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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32
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Li S, Pedano ML, Chang SH, Mirkin CA, Schatz GC. Gap structure effects on surface-enhanced Raman scattering intensities for gold gapped rods. NANO LETTERS 2010; 10:1722-1727. [PMID: 20356055 DOI: 10.1021/nl100099g] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Gapped rods provide a unique platform for elucidating structure/function relationships, both for single-molecule electrochemical techniques and for surface-enhanced Raman scattering (SERS). This paper attempts to elucidate the dependence of SERS intensities on gap topography and gap distance for gold gapped rods with segment lengths varying over a wide range (40-2000 nm). Significantly, we have determined that rough gaps lead to a smaller SERS enhancement than smooth gaps for these structures even though the rough gaps have a larger total surface area. Both theory and experiment show periodic variation of SERS intensity with segment length as determined by odd-symmetry plasmon multipoles. Excitation of even-symmetry modes is dipole forbidden (for polarization along the rod axis), but this selection rule can be relaxed by roughness or, for smooth gaps, by near-field coupling between the rod segments.
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Affiliation(s)
- Shuzhou Li
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, USA
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33
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34
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Pedano ML, Li S, Schatz GC, Mirkin CA. Periodic electric field enhancement along gold rods with nanogaps. Angew Chem Int Ed Engl 2010; 49:78-82. [PMID: 19967681 DOI: 10.1002/anie.200904646] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- María L Pedano
- Department of Chemistry and International Institute for Nanotechnology, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208, USA
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35
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Kim J, Piao Y, Lee N, Park YI, Lee IH, Lee JH, Paik SR, Hyeon T. Magnetic nanocomposite spheres decorated with NiO nanoparticles for a magnetically recyclable protein separation system. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2010; 22:57-60. [PMID: 20217697 DOI: 10.1002/adma.200901858] [Citation(s) in RCA: 79] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Affiliation(s)
- Jaeyun Kim
- National Creative Research Initiative Center for Oxide Nanocrystalline Materials, School of Chemical and Biological Engineering, Seoul National University, Seoul, Korea
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36
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Hu Y, Qian H, Guo C, Mei T. Decoration of ZnO nanocrystals on the surface of shuttle-shaped Mn2O3 and its magnetic-optical properties. CrystEngComm 2010. [DOI: 10.1039/b924820j] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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37
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Tiano AL, Koenigsmann C, Santulli AC, Wong SS. Solution-based synthetic strategies for one-dimensional metal-containing nanostructures. Chem Commun (Camb) 2010; 46:8093-130. [DOI: 10.1039/c0cc01735c] [Citation(s) in RCA: 80] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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38
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Pedano M, Li S, Schatz G, Mirkin C. Periodic Electric Field Enhancement Along Gold Rods with Nanogaps. Angew Chem Int Ed Engl 2009. [DOI: 10.1002/ange.200904646] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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39
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Yoo SH, Liu L, Park S. Nanoparticle films as a conducting layer for anodic aluminum oxide template-assisted nanorod synthesis. J Colloid Interface Sci 2009; 339:183-6. [DOI: 10.1016/j.jcis.2009.07.049] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2009] [Revised: 07/02/2009] [Accepted: 07/20/2009] [Indexed: 10/20/2022]
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40
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Fabrication of self-assembled oligophenylethynylenethiol monolayer for electrochemical glucose biosensor. Ultramicroscopy 2009; 109:911-5. [DOI: 10.1016/j.ultramic.2009.03.011] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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41
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Anderson ME, Buck MR, Sines IT, Oyler KD, Schaak RE. On-Wire Conversion Chemistry: Engineering Solid-State Complexity into Striped Metal Nanowires using Solution Chemistry Reactions. J Am Chem Soc 2008; 130:14042-3. [DOI: 10.1021/ja804743b] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Mary E. Anderson
- Department of Chemistry and Materials Research Institute, The Pennsylvania State University, University Park, Pennsylvania 16802
| | - Matthew R. Buck
- Department of Chemistry and Materials Research Institute, The Pennsylvania State University, University Park, Pennsylvania 16802
| | - Ian T. Sines
- Department of Chemistry and Materials Research Institute, The Pennsylvania State University, University Park, Pennsylvania 16802
| | - Karl D. Oyler
- Department of Chemistry and Materials Research Institute, The Pennsylvania State University, University Park, Pennsylvania 16802
| | - Raymond E. Schaak
- Department of Chemistry and Materials Research Institute, The Pennsylvania State University, University Park, Pennsylvania 16802
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42
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Yellen BB, Erb RM, Son HS, Hewlin R, Shang H, Lee GU. Traveling wave magnetophoresis for high resolution chip based separations. LAB ON A CHIP 2007; 7:1681-8. [PMID: 18030387 DOI: 10.1039/b713547e] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
A new mode of magnetophoresis is described that is capable of separating micron-sized superparamagnetic beads from complex mixtures with high sensitivity to their size and magnetic moment. This separation technique employs a translating periodic potential energy landscape to transport magnetic beads horizontally across a substrate. The potential energy landscape is created by superimposing an external, rotating magnetic field on top of the local fixed magnetic field distribution near a periodic arrangement of micro-magnets. At low driving frequencies of the external field rotation, the beads become locked into the potential energy landscape and move at the same velocity as the traveling magnetic field wave. At frequencies above a critical threshold, defined by the bead's hydrodynamic drag and magnetic moment, the motion of a specific population of magnetic beads becomes uncoupled from the potential energy landscape and its magnetophoretic mobility is dramatically reduced. By exploiting this frequency dependence, highly efficient separation of magnetic beads has been achieved, based on fractional differences in bead diameter and/or their specific attachment to two microorganisms, i.e., B. globigii and S. cerevisiae.
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Affiliation(s)
- Benjamin B Yellen
- Duke University, Department of Mechanical Engineering and Materials Science, Durham, NC 27708, USA.
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43
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Yu SY, Zhang HJ, Yu JB, Wang C, Sun LN, Shi WD. Bifunctional magnetic-optical nanocomposites: grafting lanthanide complex onto core-shell magnetic silica nanoarchitecture. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2007; 23:7836-40. [PMID: 17547435 DOI: 10.1021/la700735m] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
A new class of bifunctional architecture combining the useful functions of superparamagnetism and terbium complex luminescence into one material has been prepared via two main steps by a modified Stöber method and the layer-by-layer (LbL) assembly technique. The obtained bifunctional nanocomposites exhibit superparamagnetic behavior, high fluorescence intensity, and color purity. The architecture has been characterized by field-emission scanning electron microscopy (FE-SEM), transmission electron microscopy (TEM), UV-vis absorption and emission spectroscopy, X-ray diffraction, and superconducting quantum interference device (SQUID) magnetometry.
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Affiliation(s)
- Shi-Yong Yu
- Key Laboratory of Rare Earth Chemistry and Physics, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, PR China
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44
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Mieszawska AJ, Jalilian R, Sumanasekera GU, Zamborini FP. The synthesis and fabrication of one-dimensional nanoscale heterojunctions. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2007; 3:722-56. [PMID: 17444570 DOI: 10.1002/smll.200600727] [Citation(s) in RCA: 76] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
There are a variety of methods for synthesizing or fabricating one-dimensional (1D) nanostructures containing heterojunctions between different materials. Here we review recent developments in the synthesis and fabrication of heterojunctions formed between different materials within the same 1D nanostructure or between different 1D nanostructures composed of different materials. Structures containing 1D nanoscale heterojunctions exhibit interesting chemistry as well as size, shape, and material-dependent properties that are unique when compared to single-component materials. This leads to new or enhanced properties or multifunctionality useful for a variety of applications in electronics, photonics, catalysis, and sensing, for example. This review separates the methods into vapor-phase synthesis, solution-phase synthesis, template-based synthesis, and other approaches, such as lithography, electrospinning, and assembly. These methods are used to form a variety of heterojunctions, including segmented, core/shell, branched, or crossed, from different combinations of semiconductor, metal, carbon, and polymeric materials.
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Affiliation(s)
- Aneta J Mieszawska
- Department of Chemistry, University of Louisville, Louisville, KY 40292, USA
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45
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Abstract
The optical properties of gold rods electrochemically deposited in anodic aluminum oxide templates have been investigated. Homogeneous suspensions of rods with an average diameter of 85 nm and varying lengths of 96, 186, 321, 465, 495, 578, 641, 735, and 1175 nm were fabricated. The purity and dimensions of these rod nanostructures allowed us to observe higher-order multipole resonances for the first time in a colloidal suspension. The experimental optical spectra agree with discrete dipole approximation calculations that have been modeled from the dimensions of the gold nanorods.
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Affiliation(s)
- Emma Kathryn Payne
- Department of Chemistry and International Institute for Nanotechnology, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208-3113 (USA), Fax: (+1) 847-467-5123
| | - Kevin L. Shuford
- Department of Chemistry and International Institute for Nanotechnology, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208-3113 (USA)
| | - Sungho Park
- Department of Chemistry & Sungkyunkwan Advanced Institute of Nanotechnology, Sungkyunkwan University, Suwon 440-746 (Korea)
| | - George C. Schatz
- Department of Chemistry and International Institute for Nanotechnology, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208-3113 (USA)
| | - Chad A. Mirkin
- Department of Chemistry and International Institute for Nanotechnology, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208-3113 (USA), Fax: (+1) 847-467-5123
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