1
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Park BC, Soh JO, Choi HJ, Park HS, Lee SM, Fu HE, Kim MS, Ko MJ, Koo TM, Lee JY, Kim YK, Lee JH. Ultrasensitive and Rapid Circulating Tumor DNA Liquid Biopsy Using Surface-Confined Gene Amplification on Dispersible Magnetic Nano-Electrodes. ACS NANO 2024; 18:12781-12794. [PMID: 38733343 DOI: 10.1021/acsnano.3c12266] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2024]
Abstract
Circulating tumor DNA (ctDNA) detection has been acknowledged as a promising liquid biopsy approach for cancer diagnosis, with various ctDNA assays used for early detection and treatment monitoring. Dispersible magnetic nanoparticle-based electrochemical detection methods have been proposed as promising candidates for ctDNA detection based on the detection performance and features of the platform material. This study proposes a nanoparticle surface-localized genetic amplification approach by integrating Fe3O4-Au core-shell nanoparticles into polymerase chain reactions (PCR). These highly dispersible and magnetically responsive superparamagnetic nanoparticles act as nano-electrodes that amplify and accumulate target ctDNA in situ on the nanoparticle surface upon PCR amplification. These nanoparticles are subsequently captured and subjected to repetitive electrochemical measurements to induce reconfiguration-mediated signal amplification for ultrasensitive (∼3 aM) and rapid (∼7 min) metastatic breast cancer ctDNA detection in vitro. The detection platform can also detect metastatic biomarkers from in vivo samples, highlighting the potential for clinical applications and further expansion to rapid and ultrasensitive multiplex detection of various cancers.
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Affiliation(s)
- Bum Chul Park
- Department of Chemical Engineering, University of Michigan, Ann Arbor, Michigan 48109-2136, United States
| | - Jeong Ook Soh
- Department of Bionano Engineering, Hanyang University, Ansan 15588, Republic of Korea
- Center for Bionano Intelligence Education and Research, Hanyang University, Ansan 15588, Republic of Korea
| | - Hee-Joo Choi
- Department of Pathology, Hanyang University, Seoul 04763, Republic of Korea
- Hanyang Institute of Bioscience and Biotechnology (HY-IBB), Hanyang University, Seoul 04763, Republic of Korea
- Hanyang Biomedical Research Institute (HBRI), Hanyang University, Seoul 04763, Republic of Korea
| | - Hyeon Su Park
- Department of Materials Science and Engineering, Korea University, Seoul 02841, Republic of Korea
| | - Sang Min Lee
- Department of Bionano Engineering, Hanyang University, Ansan 15588, Republic of Korea
- Center for Bionano Intelligence Education and Research, Hanyang University, Ansan 15588, Republic of Korea
| | - Hong En Fu
- Department of Materials Science and Engineering, Korea University, Seoul 02841, Republic of Korea
| | - Myeong Soo Kim
- Department of Materials Science and Engineering, Korea University, Seoul 02841, Republic of Korea
| | - Min Jun Ko
- Department of Radiology, Northwestern University, Chicago, Illinois 60611, United States
| | - Thomas Myeongseok Koo
- Department of Materials Science and Engineering, Korea University, Seoul 02841, Republic of Korea
| | - Jeong-Yeon Lee
- Department of Pathology, Hanyang University, Seoul 04763, Republic of Korea
- Hanyang Institute of Bioscience and Biotechnology (HY-IBB), Hanyang University, Seoul 04763, Republic of Korea
| | - Young Keun Kim
- Department of Materials Science and Engineering, Korea University, Seoul 02841, Republic of Korea
- Brain Korea Center for Smart Materials and Devices, Korea University, Seoul 02841, Republic of Korea
| | - Ju Hun Lee
- Department of Bionano Engineering, Hanyang University, Ansan 15588, Republic of Korea
- Center for Bionano Intelligence Education and Research, Hanyang University, Ansan 15588, Republic of Korea
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2
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Lewińska A, Radoń A, Gil K, Błoniarz D, Ciuraszkiewicz A, Kubacki J, Kądziołka-Gaweł M, Łukowiec D, Gębara P, Krogul-Sobczak A, Piotrowski P, Fijałkowska O, Wybraniec S, Szmatoła T, Kolano-Burian A, Wnuk M. Carbon-Coated Iron Oxide Nanoparticles Promote Reductive Stress-Mediated Cytotoxic Autophagy in Drug-Induced Senescent Breast Cancer Cells. ACS APPLIED MATERIALS & INTERFACES 2024; 16:15457-15478. [PMID: 38483821 PMCID: PMC10982943 DOI: 10.1021/acsami.3c17418] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2023] [Revised: 02/27/2024] [Accepted: 02/27/2024] [Indexed: 04/04/2024]
Abstract
The surface modification of magnetite nanoparticles (Fe3O4 NPs) is a promising approach to obtaining biocompatible and multifunctional nanoplatforms with numerous applications in biomedicine, for example, to fight cancer. However, little is known about the effects of Fe3O4 NP-associated reductive stress against cancer cells, especially against chemotherapy-induced drug-resistant senescent cancer cells. In the present study, Fe3O4 NPs in situ coated by dextran (Fe3O4@Dex) and glucosamine-based amorphous carbon coating (Fe3O4@aC) with potent reductive activity were characterized and tested against drug-induced senescent breast cancer cells (Hs 578T, BT-20, MDA-MB-468, and MDA-MB-175-VII cells). Fe3O4@aC caused a decrease in reactive oxygen species (ROS) production and an increase in the levels of antioxidant proteins FOXO3a, SOD1, and GPX4 that was accompanied by elevated levels of cell cycle inhibitors (p21, p27, and p57), proinflammatory (NFκB, IL-6, and IL-8) and autophagic (BECN1, LC3B) markers, nucleolar stress, and subsequent apoptotic cell death in etoposide-stimulated senescent breast cancer cells. Fe3O4@aC also promoted reductive stress-mediated cytotoxicity in nonsenescent breast cancer cells. We postulate that Fe3O4 NPs, in addition to their well-established hyperthermia and oxidative stress-mediated anticancer effects, can also be considered, if modified using amorphous carbon coating with reductive activity, as stimulators of reductive stress and cytotoxic effects in both senescent and nonsenescent breast cancer cells with different gene mutation statuses.
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Affiliation(s)
- Anna Lewińska
- Institute
of Biotechnology, College of Natural Sciences, University of Rzeszow, Pigonia 1, 35-310 Rzeszow, Poland
| | - Adrian Radoń
- Łukasiewicz
Research Network—Institute of Non-Ferrous Metals, Sowińskiego 5, 44-100 Gliwice, Poland
| | - Kacper Gil
- Institute
of Biotechnology, College of Natural Sciences, University of Rzeszow, Pigonia 1, 35-310 Rzeszow, Poland
| | - Dominika Błoniarz
- Institute
of Biotechnology, College of Natural Sciences, University of Rzeszow, Pigonia 1, 35-310 Rzeszow, Poland
| | - Agnieszka Ciuraszkiewicz
- Łukasiewicz
Research Network—Institute of Non-Ferrous Metals, Sowińskiego 5, 44-100 Gliwice, Poland
| | - Jerzy Kubacki
- Institute
of Physics, Faculty of Science and Technology, University of Silesia in Katowice, 75 Pułku Piechoty 1, 41-500 Chorzów, Poland
| | - Mariola Kądziołka-Gaweł
- Institute
of Physics, Faculty of Science and Technology, University of Silesia in Katowice, 75 Pułku Piechoty 1, 41-500 Chorzów, Poland
| | - Dariusz Łukowiec
- Faculty
of Mechanical Engineering, Silesian University of Technology, Konarskiego 18A, 44-100 Gliwice, Poland
| | - Piotr Gębara
- Department
of Physics, Częstochowa University
of Technology, Armii Krajowej 19, 42-200 Częstochowa, Poland
| | | | - Piotr Piotrowski
- Faculty
of
Chemistry, University of Warsaw, Pasteura 1, 02-093 Warsaw, Poland
| | - Oktawia Fijałkowska
- Institute
of Biotechnology, College of Natural Sciences, University of Rzeszow, Pigonia 1, 35-310 Rzeszow, Poland
| | - Sylwia Wybraniec
- Institute
of Biotechnology, College of Natural Sciences, University of Rzeszow, Pigonia 1, 35-310 Rzeszow, Poland
| | - Tomasz Szmatoła
- Center
of Experimental and Innovative Medicine, University of Agriculture in Krakow, Mickiewicza 24/28, 30-059 Krakow, Poland
| | - Aleksandra Kolano-Burian
- Łukasiewicz
Research Network—Institute of Non-Ferrous Metals, Sowińskiego 5, 44-100 Gliwice, Poland
| | - Maciej Wnuk
- Institute
of Biotechnology, College of Natural Sciences, University of Rzeszow, Pigonia 1, 35-310 Rzeszow, Poland
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3
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Kim YJ, Lee DB, Jeong E, Jeon JY, Kim HD, Kang H, Kim YK. Magnetically Stimulated Integrin Binding Alters Cell Polarity and Affects Epithelial-Mesenchymal Plasticity in Metastatic Cancer Cells. ACS APPLIED MATERIALS & INTERFACES 2024; 16:8365-8377. [PMID: 38319067 DOI: 10.1021/acsami.3c16720] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2024]
Abstract
Inorganic nanoparticles (NPs) have been widely recognized for their stability and biocompatibility, leading to their widespread use in biomedical applications. Our study introduces a novel approach that harnesses inorganic magnetic nanoparticles (MNPs) to stimulate apical-basal polarity and induce epithelial traits in cancer cells, targeting the hybrid epithelial/mesenchymal (E/M) state often linked to metastasis. We employed mesocrystalline iron oxide MNPs to apply an external magnetic field, disrupting normal cell polarity and simulating an artificial cellular environment. These led to noticeable changes in the cell shape and function, signaling a shift toward the hybrid E/M state. Our research suggests that apical-basal stimulation in cells through MNPs can effectively modulate key cellular markers associated with both epithelial and mesenchymal states without compromising the structural properties typical of mesenchymal cells. These insights advance our understanding of how cells respond to physical cues and pave the way for novel cancer treatment strategies. We anticipate that further research and validation will be instrumental in exploring the full potential of these findings in clinical applications, ensuring their safety and efficacy.
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Affiliation(s)
- Yu Jin Kim
- Institute for High Technology Materials and Devices, Korea University, Seoul 02841, Korea
| | - Dae Beom Lee
- Department of Materials Science and Engineering, Korea University, Seoul 02841, Korea
| | - Eunjin Jeong
- Department of Materials Science and Engineering, Korea University, Seoul 02841, Korea
| | - Joo Yeong Jeon
- Seoul Center, Korea Basic Science Institute, Seoul 03759, Korea
| | - Hee-Dae Kim
- Department of Basic Medical Sciences, University of Arizona College of Medicine─Phoenix, Phoenix, Arizona 85004, United States
| | - Heemin Kang
- Department of Materials Science and Engineering, Korea University, Seoul 02841, Korea
| | - Young Keun Kim
- Institute for High Technology Materials and Devices, Korea University, Seoul 02841, Korea
- Department of Materials Science and Engineering, Korea University, Seoul 02841, Korea
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4
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Zubayer A, Ghafoor N, Thórarinsdóttir KA, Stendahl S, Glavic A, Stahn J, Nagy G, Greczynski G, Schwartzkopf M, Le Febvrier A, Eklund P, Birch J, Magnus F, Eriksson F. Reflective, polarizing, and magnetically soft amorphous neutron optics with 11B-enriched B 4C. SCIENCE ADVANCES 2024; 10:eadl0402. [PMID: 38354253 PMCID: PMC10866559 DOI: 10.1126/sciadv.adl0402] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2023] [Accepted: 01/12/2024] [Indexed: 02/16/2024]
Abstract
The utilization of polarized neutrons is of great importance in scientific disciplines spanning materials science, physics, biology, and chemistry. However, state-of-the-art multilayer polarizing neutron optics have limitations, particularly low specular reflectivity and polarization at higher scattering vectors/angles, and the requirement of high external magnetic fields to saturate the polarizer magnetization. Here, we show that, by incorporating 11B4C into Fe/Si multilayers, amorphization and smooth interfaces can be achieved, yielding higher neutron reflectivity, less diffuse scattering, and higher polarization. Magnetic coercivity is eliminated, and magnetic saturation can be reached at low external fields (>2 militesla). This approach offers prospects for substantial improvement in polarizing neutron optics with nonintrusive positioning of the polarizer, enhanced flux, increased data accuracy, and further polarizing/analyzing methods at neutron scattering facilities.
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Affiliation(s)
- Anton Zubayer
- Thin Film Physics Division, Department of Physics, Chemistry and Biology (IFM), Linköping University, SE-581 83 Linköping, Sweden
| | - Naureen Ghafoor
- Thin Film Physics Division, Department of Physics, Chemistry and Biology (IFM), Linköping University, SE-581 83 Linköping, Sweden
| | | | - Sjoerd Stendahl
- Thin Film Physics Division, Department of Physics, Chemistry and Biology (IFM), Linköping University, SE-581 83 Linköping, Sweden
| | - Artur Glavic
- Paul Scherrer Institut, 5232 Villigen PSI, Switzerland
| | - Jochen Stahn
- Paul Scherrer Institut, 5232 Villigen PSI, Switzerland
| | - Gyula Nagy
- Department of Physics and Astronomy, Uppsala University, SE-75120, Uppsala, Sweden
| | - Grzegorz Greczynski
- Thin Film Physics Division, Department of Physics, Chemistry and Biology (IFM), Linköping University, SE-581 83 Linköping, Sweden
| | | | - Arnaud Le Febvrier
- Thin Film Physics Division, Department of Physics, Chemistry and Biology (IFM), Linköping University, SE-581 83 Linköping, Sweden
| | - Per Eklund
- Thin Film Physics Division, Department of Physics, Chemistry and Biology (IFM), Linköping University, SE-581 83 Linköping, Sweden
| | - Jens Birch
- Thin Film Physics Division, Department of Physics, Chemistry and Biology (IFM), Linköping University, SE-581 83 Linköping, Sweden
| | - Fridrik Magnus
- Science Institute, University of Iceland, Dunhaga 3, IS-107 Reykjavik, Iceland
| | - Fredrik Eriksson
- Thin Film Physics Division, Department of Physics, Chemistry and Biology (IFM), Linköping University, SE-581 83 Linköping, Sweden
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5
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Zhao J, Yang J, Yang L, Zhu X, Zhou B, Bai L, Tang X, Liang H. Effect of a Permanganate-Bearing Reactive Oxidant on Flocs in Electrocoagulation: Transformations and Interfacial Interactions. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2023. [PMID: 37316474 DOI: 10.1021/acs.est.3c01793] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
The electrocoagulation/ultrafiltration (ECUF) process is expected to address the issues of current wastewater increments and complex water reuse. However, the underlying mechanism associated with flocs remains unclear in the ECUF system, especially in the upgraded permanganate-bearing ECUF (PECUF) system. Herein, flocs and their formation, response to organic matter (OM), and interfacial features in the PECUF process were systematically explored. Results demonstrated that permanganate contributed to the rapid start-up of the coagulation process by forming MnO2 and blocking the ligand-metal charge transfer process between adsorbed Fe(II) and solid-phase Fe(III). The response of flocs to natural OM (NOM) exhibited obvious time- and particle size-dependent characteristics. Based on this, the optimal NOM adsorption window was found to be in the interval of 5-20 min, whereas the optimal NOM removal window was located at the 20-30 min interval. Furthermore, the extended Derjaguin-Landau-Verwey-Overbeek theory revealed the underlying principle of the PECUF module for optimizing UF performance. On the one hand, it reduced the inherent resistance of the cake layer by modifying the colloidal solution, which guaranteed a small drop (15%) in initial flux. On the other hand, it enhanced the repulsive force among suspended particles to achieve a long-term antifouling effect. This study may provide insights into the selection and performance control of on-demand assembly modules in decentralized water treatment systems.
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Affiliation(s)
- Jing Zhao
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Jiaxuan Yang
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Liu Yang
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Xuewu Zhu
- School of Municipal and Environmental Engineering, Shandong Jianzhu University, Jinan 250101, PR China
| | - Boyu Zhou
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Langming Bai
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Xiaobin Tang
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Heng Liang
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China
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6
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Lee YS, Chul Park B, Beom Lee D, Min HG, Kim MS, Kim SC, Ok Won S, Wee J, Chae E, Sim C, Kim Y, Kim JG, Keun Kim Y, Cho K. Crystallization-based upcycling of iron oxyhydroxide for efficient arsenic capture in contaminated soils. ENVIRONMENT INTERNATIONAL 2023; 175:107963. [PMID: 37192573 DOI: 10.1016/j.envint.2023.107963] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/19/2023] [Revised: 04/08/2023] [Accepted: 05/05/2023] [Indexed: 05/18/2023]
Abstract
Arsenic (As)-contaminated soil inevitably exists in nature and has become a global challenge for a sustainable future. Current processes for As capture using natural and structurally engineered nanomaterials are neither scientifically nor economically viable. Here, we established a feasible strategy to enhance As-capture efficiency and ecosystem health by structurally reorganizing iron oxyhydroxide, a natural As stabilizer. We propose crystallization to reorganize FeOOH-acetate nanoplatelets (r-FAN), which is universal for either scalable chemical synthesis or reproduction from natural iron oxyhydroxide phases. The r-FAN with wide interlayer spacing immobilizes As species through a synergistic mechanism of electrostatic intercalation and surface chemisorption. The r-FAN rehabilitates the ecological fitness of As-contaminated artificial and mine soils, as manifested by the integrated bioassay results of collembolan and plants. Our findings will serve as a cornerstone for crystallization-based material engineering for sustainable environmental applications and for understanding the interactions between soil, nanoparticles, and contaminants.
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Affiliation(s)
- Yun-Sik Lee
- Department of Biology Education, Pusan National University, Busan 46241, Republic of Korea
| | - Bum Chul Park
- Biointerfaces Institute, University of Michigan, Ann Arbor, MI 48109, USA
| | - Dae Beom Lee
- Department of Materials Science and Engineering, Korea University, Seoul 02841, Republic of Korea; Brain Korea Center for Smart Materials and Devices, Korea University, Seoul 02841, Republic of Korea
| | - Hyun-Gi Min
- Ojeong Eco-Resilience Institute, Korea University, Seoul 02841, Republic of Korea
| | - Min-Suk Kim
- Waste Resources Management Division Resource Recirculation Bureau, Ministry of Environment, Sejong-si 30103, Republic of Korea
| | - Sung-Chul Kim
- Advanced Analysis and Data Center, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea
| | - Sung Ok Won
- Advanced Analysis and Data Center, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea
| | - June Wee
- Ojeong Eco-Resilience Institute, Korea University, Seoul 02841, Republic of Korea
| | - Eunji Chae
- Ojeong Eco-Resilience Institute, Korea University, Seoul 02841, Republic of Korea
| | - Cheolho Sim
- Department of Biology, Baylor University, Waco, TX 76706, USA
| | - Youngeun Kim
- Ojeong Eco-Resilience Institute, Korea University, Seoul 02841, Republic of Korea
| | - Jeong-Gyu Kim
- Division of Environmental Science and Ecological Engineering, Korea University, Seoul 02841, Republic of Korea
| | - Young Keun Kim
- Department of Materials Science and Engineering, Korea University, Seoul 02841, Republic of Korea; Brain Korea Center for Smart Materials and Devices, Korea University, Seoul 02841, Republic of Korea.
| | - Kijong Cho
- Division of Environmental Science and Ecological Engineering, Korea University, Seoul 02841, Republic of Korea.
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7
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Shin S, Seo S, Jeong S, Sharbirin AS, Kim J, Ahn H, Park NG, Shin H. Kinetic-Controlled Crystallization of α-FAPbI 3 Inducing Preferred Crystallographic Orientation Enhances Photovoltaic Performance. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2023; 10:e2300798. [PMID: 36994651 DOI: 10.1002/advs.202300798] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Indexed: 05/18/2023]
Abstract
Crystallization kinetic controls the crystallographic orientation, inducing anisotropic properties of the materials. As a result, preferential orientation with advanced optoelectronic properties can enhance the photovoltaic devices' performance. Although incorporation of additives is one of the most studied methods to stabilize the photoactive α-phase of formamidinium lead tri-iodide (α-FAPbI3 ), no studies focus on how the additives affect the crystallization kinetics. Along with the role of methylammonium chloride (MACl) as a "stabilizer" in the formation of α-FAPbI3 , herein, the additional role as a "controller" in the crystallization kinetics is pointed out. With microscopic observations, for example, electron backscatter diffraction and selected area electron diffraction, it is examined that higher concentration of MACl induces slower crystallization kinetics, resulting in larger grain size and [100] preferred orientation. Optoelectronic properties of [100] preferentially oriented grains with less non-radiative recombination, a longer lifetime of charge carriers, and lower photocurrent deviations in between each grain induce higher short-circuit current density (Jsc ) and fill factor. Resulting MACl40 mol% attains the highest power conversion efficiency (PCE) of 24.1%. The results provide observations of a direct correlation between the crystallographic orientation and device performance as it highlights the importance of crystallization kinetics resulting in desirable microstructures for device engineering.
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Affiliation(s)
- Sooeun Shin
- Department of Energy Science, Sungkyunkwan University, Suwon, 440-746, Republic of Korea
- SKKU Institute of Energy Science and Technology (SIEST), Sungkyunkwan University, Suwon, 440-746, Republic of Korea
| | - Seongrok Seo
- Department of Physics, University of Oxford, Clarendon Laboratory, Oxford, OX1 3PU, UK
| | - Seonghwa Jeong
- Department of Energy Science, Sungkyunkwan University, Suwon, 440-746, Republic of Korea
| | - Anir S Sharbirin
- Department of Energy Science, Sungkyunkwan University, Suwon, 440-746, Republic of Korea
| | - Jeongyong Kim
- Department of Energy Science, Sungkyunkwan University, Suwon, 440-746, Republic of Korea
| | - Hyungju Ahn
- Pohang Accelerator Laboratory, Pohang, Kyungbuk, 37673, Republic of Korea
| | - Nam-Gyu Park
- SKKU Institute of Energy Science and Technology (SIEST), Sungkyunkwan University, Suwon, 440-746, Republic of Korea
- School of Chemical Engineering, Sungkyunkwan University, Suwon, 440-746, Republic of Korea
| | - Hyunjung Shin
- Department of Energy Science, Sungkyunkwan University, Suwon, 440-746, Republic of Korea
- SKKU Institute of Energy Science and Technology (SIEST), Sungkyunkwan University, Suwon, 440-746, Republic of Korea
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8
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Soh JO, Park BC, Park HS, Kim MS, Fu HE, Kim YK, Lee JH. Multifunctional Nanoparticle Platform for Surface Accumulative Nucleic Acid Amplification and Rapid Electrochemical Detection: An Application to Pathogenic Coronavirus. ACS Sens 2023; 8:839-847. [PMID: 36707063 PMCID: PMC9897046 DOI: 10.1021/acssensors.2c02512] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Accepted: 01/06/2023] [Indexed: 01/29/2023]
Abstract
Of various molecular diagnostic assays, the real-time reverse transcription polymerase chain reaction is considered the gold standard for infection diagnosis, despite critical drawbacks that limit rapid detection and accessibility. To confront these issues, several nanoparticle-based molecular detection methods have been developed to a great extent, but still possess several challenges. In this study, a novel nucleic acid amplification method termed nanoparticle-based surface localized amplification (nSLAM) is paired with electrochemical detection (ECD) to develop a nucleic acid biosensor platform that overcomes these limitations. The system uses primer-functionalized Fe3O4-Au core-shell nanoparticles for nucleic acid amplification, which promotes the production of amplicons that accumulate on the nanoparticle surfaces, inducing significantly amplified currents during ECD that identify the presence of target genetic material. The platform, applying to the COVID-19 model, demonstrates an exceptional sensitivity of ∼1 copy/μL for 35 cycles of amplification, enabling the reduction of amplification cycles to 4 cycles (∼7 min runtime) using 1 fM complementary DNA. The nSLAM acts as an accelerator that actively promotes and participates in the nucleic acid amplification process through direct polymerization and binding of amplicons on the nanoparticle surfaces. This ultrasensitive fast-response system is a promising method for detecting emerging pathogens like the coronavirus and can be extended to detect a wider variety of biomolecules.
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Affiliation(s)
- Jeong Ook Soh
- Department of Bionano Engineering,
Hanyang University, 55 Hanyangdaehak-ro, Sangnok-gu,
Ansan15588, Republic of Korea
- Center for Bionano Intelligence Education and
Research, Hanyang University, 55 Hanyangdaehak-ro, Sangnok-gu,
Ansan15588, Republic of Korea
| | - Bum Chul Park
- Department of Materials Science and Engineering,
Korea University, 145 Anam-ro, Seongbuk-gu, Seoul02841,
Republic of Korea
- Brain Korea Center for Smart Materials and Devices,
Korea University, 145 Anam-ro, Seongbuk-gu, Seoul02841,
Republic of Korea
| | - Hyeon Su Park
- Department of Materials Science and Engineering,
Korea University, 145 Anam-ro, Seongbuk-gu, Seoul02841,
Republic of Korea
| | - Myeong Soo Kim
- Department of Materials Science and Engineering,
Korea University, 145 Anam-ro, Seongbuk-gu, Seoul02841,
Republic of Korea
| | - Hong En Fu
- Department of Materials Science and Engineering,
Korea University, 145 Anam-ro, Seongbuk-gu, Seoul02841,
Republic of Korea
| | - Young Keun Kim
- Department of Materials Science and Engineering,
Korea University, 145 Anam-ro, Seongbuk-gu, Seoul02841,
Republic of Korea
- Brain Korea Center for Smart Materials and Devices,
Korea University, 145 Anam-ro, Seongbuk-gu, Seoul02841,
Republic of Korea
| | - Ju Hun Lee
- Department of Bionano Engineering,
Hanyang University, 55 Hanyangdaehak-ro, Sangnok-gu,
Ansan15588, Republic of Korea
- Center for Bionano Intelligence Education and
Research, Hanyang University, 55 Hanyangdaehak-ro, Sangnok-gu,
Ansan15588, Republic of Korea
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9
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Kim IY, Kim JW, Lee BJ, Lim JH. Fabrication and Characteristics of a Conductive FeCo@Au Nanowire Alloy for Semiconductor Test Socket Connectors. MATERIALS (BASEL, SWITZERLAND) 2022; 16:381. [PMID: 36614721 PMCID: PMC9821946 DOI: 10.3390/ma16010381] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/06/2022] [Revised: 12/26/2022] [Accepted: 12/28/2022] [Indexed: 06/17/2023]
Abstract
The most promising approach for improving the electrical performance of connectors used in semiconductor test sockets involves increasing their electrical conductivity by incorporating one-dimensional (1D) conductive materials between zero-dimensional (0D) conductive materials. In this study, FeCo nanowires were synthesized by electroplating to prepare a material in which 1D materials could be magnetically aligned. Moreover, the nanowires were coated with highly conductive Au. The magnetization per unit mass of the synthesized FeCo and FeCo@Au nanowires was 167.2 and 13.9 emu/g, respectively. The electrical performance of rubber-based semiconductor connectors before and after the introduction of synthetic nanowires was compared, and it was found that the resistance decreased by 14%. The findings reported herein can be exploited to improve the conductivity of rubber-type semiconductor connectors, thereby facilitating the development of connectors using 0D and 1D materials.
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Affiliation(s)
- In Yea Kim
- Department of Materials Science and Engineering, Gachon University, 1342 Seongnamdearo 13120, Republic of Korea
| | - Jong Won Kim
- ISC Co., Ltd., 215 Galmachi-ro, Jungwon-gu, Seongnam-si 13217, Gyeonggi-do, Republic of Korea
| | - Byeung Ju Lee
- ISC Co., Ltd., 215 Galmachi-ro, Jungwon-gu, Seongnam-si 13217, Gyeonggi-do, Republic of Korea
| | - Jae-Hong Lim
- Department of Materials Science and Engineering, Gachon University, 1342 Seongnamdearo 13120, Republic of Korea
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10
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Surface-ligand-induced crystallographic disorder-order transition in oriented attachment for the tuneable assembly of mesocrystals. Nat Commun 2022; 13:1144. [PMID: 35241688 PMCID: PMC8894404 DOI: 10.1038/s41467-022-28830-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2021] [Accepted: 02/10/2022] [Indexed: 11/09/2022] Open
Abstract
In the crystallisation of nanomaterials, an assembly-based mechanism termed ‘oriented attachment’ (OA) has recently been recognised as an alternative mechanism of crystal growth that cannot be explained by the classical theory. However, attachment alignment during OA is not currently tuneable because its mechanism is poorly understood. Here, we identify the crystallographic disorder-order transitions in the OA of magnetite (Fe3O4) mesocrystals depending on the types of organic surface ligands on the building blocks, which produce different grain structures. We find that alignment variations induced by different surface ligands are guided by surface energy anisotropy reduction and surface deformation. Further, we determine the effects of alignment-dependent magnetic interactions between building blocks on the global magnetic properties of mesocrystals and their chains. These results revisit the driving force of OA and provide an approach for chemically controlling the crystallographic order in colloidal nanocrystalline materials directly related to grain engineering. Oriented attachment is a non-classical growth mechanism of nanomaterials that can lead to tunable properties and functionalities. Here the authors show that the crystallographic alignment between magnetite mesocrystal building-blocks can be tuned by the surface ligands, influencing the resulting magnetic properties.
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11
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Honecker D, Bersweiler M, Erokhin S, Berkov D, Chesnel K, Venero DA, Qdemat A, Disch S, Jochum JK, Michels A, Bender P. Using small-angle scattering to guide functional magnetic nanoparticle design. NANOSCALE ADVANCES 2022; 4:1026-1059. [PMID: 36131777 PMCID: PMC9417585 DOI: 10.1039/d1na00482d] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/25/2021] [Accepted: 01/15/2022] [Indexed: 05/14/2023]
Abstract
Magnetic nanoparticles offer unique potential for various technological, biomedical, or environmental applications thanks to the size-, shape- and material-dependent tunability of their magnetic properties. To optimize particles for a specific application, it is crucial to interrelate their performance with their structural and magnetic properties. This review presents the advantages of small-angle X-ray and neutron scattering techniques for achieving a detailed multiscale characterization of magnetic nanoparticles and their ensembles in a mesoscopic size range from 1 to a few hundred nanometers with nanometer resolution. Both X-rays and neutrons allow the ensemble-averaged determination of structural properties, such as particle morphology or particle arrangement in multilayers and 3D assemblies. Additionally, the magnetic scattering contributions enable retrieving the internal magnetization profile of the nanoparticles as well as the inter-particle moment correlations caused by interactions within dense assemblies. Most measurements are used to determine the time-averaged ensemble properties, in addition advanced small-angle scattering techniques exist that allow accessing particle and spin dynamics on various timescales. In this review, we focus on conventional small-angle X-ray and neutron scattering (SAXS and SANS), X-ray and neutron reflectometry, gracing-incidence SAXS and SANS, X-ray resonant magnetic scattering, and neutron spin-echo spectroscopy techniques. For each technique, we provide a general overview, present the latest scientific results, and discuss its strengths as well as sample requirements. Finally, we give our perspectives on how future small-angle scattering experiments, especially in combination with micromagnetic simulations, could help to optimize the performance of magnetic nanoparticles for specific applications.
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Affiliation(s)
- Dirk Honecker
- ISIS Neutron and Muon Facility, Rutherford Appleton Laboratory Didcot OX11 0QX UK
| | - Mathias Bersweiler
- Department of Physics and Materials Science, University of Luxembourg 162A Avenue de La Faïencerie L-1511 Luxembourg Grand Duchy of Luxembourg
| | - Sergey Erokhin
- General Numerics Research Lab Moritz-von-Rohr-Straße 1A D-07745 Jena Germany
| | - Dmitry Berkov
- General Numerics Research Lab Moritz-von-Rohr-Straße 1A D-07745 Jena Germany
| | - Karine Chesnel
- Brigham Young University, Department of Physics and Astronomy Provo Utah 84602 USA
| | - Diego Alba Venero
- ISIS Neutron and Muon Facility, Rutherford Appleton Laboratory Didcot OX11 0QX UK
| | - Asma Qdemat
- Universität zu Köln, Department für Chemie Luxemburger Straße 116 D-50939 Köln Germany
| | - Sabrina Disch
- Universität zu Köln, Department für Chemie Luxemburger Straße 116 D-50939 Köln Germany
| | - Johanna K Jochum
- Heinz Maier-Leibnitz Zentrum (MLZ), Technische Universität München Lichtenbergstraße 1 85748 Garching Germany
| | - Andreas Michels
- Department of Physics and Materials Science, University of Luxembourg 162A Avenue de La Faïencerie L-1511 Luxembourg Grand Duchy of Luxembourg
| | - Philipp Bender
- Heinz Maier-Leibnitz Zentrum (MLZ), Technische Universität München Lichtenbergstraße 1 85748 Garching Germany
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12
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Su Z, Si W, Liu H, Xiong S, Chu X, Yang W, Peng Y, Chen J, Cao X, Li J. Boosting the Catalytic Performance of CeO 2 in Toluene Combustion via the Ce-Ce Homogeneous Interface. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2021; 55:12630-12639. [PMID: 34448390 DOI: 10.1021/acs.est.1c03999] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Catalytic combustion is an advanced technology to eliminate industrial volatile organic compounds such as toluene. In order to replace the expensive noble metal catalysts and avoid the aggregation phenomenon occurring in traditional heterogeneous interfaces, designing homogeneous interfaces can become an emerging methodology to enhance the catalytic combustion performance of metal oxide catalysts. A mesocrystalline CeO2 catalyst with abundant Ce-Ce homogeneous interfaces is synthesized via a self-flaming method which exhibits boosted catalytic performance for toluene combustion compared with traditional CeO2, leading to a ∼40 °C lower T90. The abundant Ce-Ce homogeneous interfaces formed by both highly ordered stacking and small grain size endow the CeO2 mesocrystal with superior redox property and oxygen storage capacity via forming various oxygen vacancies. Surface and bulk oxygen vacancies generate and activate crucial oxygen species, while interfacial oxygen vacancies further promote the reaction behavior of oxygen species (i.e., activation, regeneration, and migration), causing the splitting of redox property toward lower temperature. These properties facilitate aromatic ring decomposition, the important rate-determining step, thus contributing to toluene catalytic degradation to CO2. This work may shed insights into the catalytic effects of homogeneous interfaces in pollutant removal and provide a strategy of interfacial defect engineering for catalyst development.
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Affiliation(s)
- Ziang Su
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China
| | - Wenzhe Si
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China
| | - Hao Liu
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China
| | - Shangchao Xiong
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China
| | - Xuefeng Chu
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China
| | - Wenhao Yang
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China
| | - Yue Peng
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China
| | - Jianjun Chen
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China
| | - Xingzhong Cao
- Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
| | - Junhua Li
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China
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13
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Koo TM, Ko MJ, Park BC, Kim MS, Kim YK. Fluorescent detection of dipicolinic acid as a biomarker in bacterial spores employing terbium ion-coordinated magnetite nanoparticles. JOURNAL OF HAZARDOUS MATERIALS 2021; 408:124870. [PMID: 33387720 DOI: 10.1016/j.jhazmat.2020.124870] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2020] [Revised: 12/04/2020] [Accepted: 12/11/2020] [Indexed: 06/12/2023]
Abstract
Anthrax is a bioterror agent because of its toxicity and the tolerance of its bacterial spores. Thus, researchers have attempted to develop various nanomaterials to detect dipicolinic acid (DPA), a biomarker of bacterial spores. Nanomaterials containing lanthanide ions have received considerable attention, owing to their potential to exhibit high sensitivity and selectivity in the detection of DPA via chelation with molecules. However, the fluorescent signals of the lanthanide complex are quenchable because the nanomaterials simultaneously absorb the excitation and emission light. For the precise detection of DPA, pure signals have to be obtained from the complex by alleviating the quenching effect of the nanomaterials. In this study, we develop a structure with terbium ion (Tb3+)-coordinated magnetite (Fe3O4) nanoparticle to detect DPA. Tb3+ can be detached from the magnetite during chelation with the DPA, and the complex can emit the unencumbered signals with improved detection limit through the application of a magnetic field. The detection system exhibits a significantly lower detection limit (5.4 nM) than the infectious dosage of anthrax (60 μM) with high selectivity and chemical stability. This study informs the improvement of detection limits via the separation of nanomaterials and lanthanide complex.
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Affiliation(s)
- Thomas Myeongseok Koo
- Department of Materials Science and Engineering, Korea University, Seoul 02841, Republic of Korea
| | - Min Jun Ko
- Department of Materials Science and Engineering, Korea University, Seoul 02841, Republic of Korea
| | - Bum Chul Park
- Department of Materials Science and Engineering, Korea University, Seoul 02841, Republic of Korea; Brain Korea Center for Smart Materials and Devices, Korea University, Seoul 02841, Republic of Korea
| | - Myeong Soo Kim
- Institute for High Technology Materials and Devices, Korea University, Seoul 02841, Republic of Korea
| | - Young Keun Kim
- Department of Materials Science and Engineering, Korea University, Seoul 02841, Republic of Korea; Brain Korea Center for Smart Materials and Devices, Korea University, Seoul 02841, Republic of Korea; Institute for High Technology Materials and Devices, Korea University, Seoul 02841, Republic of Korea.
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14
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AbuTalib NH, LaGrow AP, Besenhard MO, Bondarchuk O, Sergides A, Famiani S, Ferreira LP, Cruz MM, Gavriilidis A, Thanh NTK. Shape controlled iron oxide nanoparticles: inducing branching and controlling particle crystallinity. CrystEngComm 2021. [DOI: 10.1039/d0ce01291b] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Branched or multiply branched iron oxide nanoparticles are synthesized, the crystal domains rearrange forming single crystalline structures, that is crucial for efficient magnetic hyperthermia.
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Affiliation(s)
- Nur Hanisah AbuTalib
- Biophysics Group
- Department of Physics and Astronomy
- University College London
- London
- UK and UCL Healthcare Biomagnetic and Nanomaterials Laboratories, 21 Albemarle Street, London W1S 4BS, UK
| | - Alec P. LaGrow
- International Iberian Nanotechnology Laboratory
- Braga
- Portugal
| | | | | | - Andreas Sergides
- Biophysics Group
- Department of Physics and Astronomy
- University College London
- London
- UK and UCL Healthcare Biomagnetic and Nanomaterials Laboratories, 21 Albemarle Street, London W1S 4BS, UK
| | - Simone Famiani
- Biophysics Group
- Department of Physics and Astronomy
- University College London
- London
- UK and UCL Healthcare Biomagnetic and Nanomaterials Laboratories, 21 Albemarle Street, London W1S 4BS, UK
| | - Liliana P. Ferreira
- Physics Department
- University of Coimbra
- 3004-516 Coimbra
- Portugal
- BioISI-Biosystems and Integrative Sciences Institute
| | - M. Margarida Cruz
- BioISI-Biosystems and Integrative Sciences Institute
- Faculdade de Ciências
- Universidade de Lisboa
- 1749-016 Lisboa
- Portugal
| | | | - Nguyen Thi Kim Thanh
- Biophysics Group
- Department of Physics and Astronomy
- University College London
- London
- UK and UCL Healthcare Biomagnetic and Nanomaterials Laboratories, 21 Albemarle Street, London W1S 4BS, UK
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15
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Ko MJ, Park BC, Koo TM, Jeon YS, Kim MS, Kim YK. Multi-Component Mesocrystalline Nanoparticles with Enhanced Photocatalytic Activity. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2020; 16:e2004696. [PMID: 33215854 DOI: 10.1002/smll.202004696] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2020] [Revised: 10/07/2020] [Indexed: 06/11/2023]
Abstract
Mesocrystals, consisting of small subunits, have gained research interests owing to their ability to simultaneously modify material-specific properties and interactions among subunits. However, despite these unique characteristics, most mesocrystals are composed of a single material, and there is a disjunction between academic discovery and practical application. In this study, the synthesis of multi-component mesocrystalline nanoparticles composed of Fe3 O4 , ZnFe2 O4 , and ZnO subunits using a polymerization induced heterogeneous nucleation method is reported. The structure has small ZnFe2 O4 and ZnO nanocrystals covering the Fe3 O4 crystallites. It exhibits not only magnetic and catalytic properties determined by the size of each subunit nanocrystal, but also enhances photocatalytic and colloidal properties that originates because of its crowded arrangement. The magnetically recoverable catalysts exhibit remarkable photodegradation of organic molecules under the irradiation of visible light for 1 h; thus, improving its applicability in purifying a large amount of wastewater during the daytime.
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Affiliation(s)
- Min Jun Ko
- Department of Materials Science and Engineering, Korea University, Seoul, 02841, Republic of Korea
| | - Bum Chul Park
- Department of Materials Science and Engineering, Korea University, Seoul, 02841, Republic of Korea
- BK21 Plus Center for Creative Materials and Components, Korea University, Seoul, 02841, Republic of Korea
| | - Thomas Myeongseok Koo
- Department of Materials Science and Engineering, Korea University, Seoul, 02841, Republic of Korea
| | - Yoo Sang Jeon
- Department of Materials Science and Engineering, Korea University, Seoul, 02841, Republic of Korea
- Research Institute of Engineering and Technology, Korea University, Seoul, 02841, Republic of Korea
| | - Myeong Soo Kim
- Institute of High Technology Materials and Devices, Korea University, Seoul, 02841, Republic of Korea
| | - Young Keun Kim
- Department of Materials Science and Engineering, Korea University, Seoul, 02841, Republic of Korea
- BK21 Plus Center for Creative Materials and Components, Korea University, Seoul, 02841, Republic of Korea
- Research Institute of Engineering and Technology, Korea University, Seoul, 02841, Republic of Korea
- Institute of High Technology Materials and Devices, Korea University, Seoul, 02841, Republic of Korea
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16
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Kim MS, Park BC, Kim YJ, Lee JH, Koo TM, Ko MJ, Kim YK. Design of Magnetic-Plasmonic Nanoparticle Assemblies via Interface Engineering of Plasmonic Shells for Targeted Cancer Cell Imaging and Separation. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2020; 16:e2001103. [PMID: 32329574 DOI: 10.1002/smll.202001103] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2020] [Revised: 03/21/2020] [Accepted: 03/30/2020] [Indexed: 06/11/2023]
Abstract
Magnetic-plasmonic nanoparticles have received considerable attention for widespread applications. These nanoparticles (NPs) exhibiting surface-enhanced Raman scattering (SERS) activities are developed due to their potential in bio-sensing applicable in non-destructive and sensitive analysis with target-specific separation. However, it is challenging to synthesize these NPs that simultaneously exhibit low remanence, maximized magnetic content, plasmonic coverage with abundant hotspots, and structural uniformity. Here, a method that involves the conjugation of a magnetic template with gold seeds via chemical binding and seed-mediated growth is proposed, with the objective of obtaining plasmonic nanostructures with abundant hotspots on a magnetic template. To obtain a clean surface for directly functionalizing ligands and enhancing the Raman intensity, an additional growth step of gold (Au) and/or silver (Ag) atoms is proposed after modifying the Raman molecules on the as-prepared magnetic-plasmonic nanoparticles. Importantly, one-sided silver growth occurred in an environment where gold facets are blocked by Raman molecules; otherwise, the gold growth is layer-by-layer. Moreover, simultaneous reduction by gold and silver ions allowed for the formation of a uniform bimetallic layer. The enhancement factor of the nanoparticles with a bimetallic layer is approximately 107 . The SERS probes functionalized cyclic peptides are employed for targeted cancer-cell imaging and separation.
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Affiliation(s)
- Myeong Soo Kim
- Department of Biomicrosystem Technology, Korea University, Seoul, 02481, Republic of Korea
| | - Bum Chul Park
- Research Institute of Engineering and Technology, BK21 Plus Center for Creative Materials and Components, Korea University, Seoul, 02481, Republic of Korea
- Department of Materials Science and Engineering, Korea University, Seoul, 02841, Republic of Korea
| | - Yu Jin Kim
- The Institute for High Technology Materials and Devices, Korea University, Seoul, 02481, Republic of Korea
| | - Ju Hun Lee
- Department of Bionano Engineering, Hanyang University, Ansan, 15588, Republic of Korea
| | - Thomas Myeongseok Koo
- Department of Materials Science and Engineering, Korea University, Seoul, 02841, Republic of Korea
| | - Min Jun Ko
- Department of Materials Science and Engineering, Korea University, Seoul, 02841, Republic of Korea
| | - Young Keun Kim
- Department of Biomicrosystem Technology, Korea University, Seoul, 02481, Republic of Korea
- Department of Materials Science and Engineering, Korea University, Seoul, 02841, Republic of Korea
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