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Attar SR, Kamble SB. Recent advances in nanoparticles towards sustainability and their application in organic transformations in aqueous media. NANOSCALE 2022; 14:16761-16786. [PMID: 36341716 DOI: 10.1039/d2nr04148k] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Nanoparticles (NPs) play a crucial role in organic transformation and are becoming increasingly attractive in the field of catalysis as they show good catalytic activity in organic as well as aqueous media. Numerous NPs have been utilized for several organic transformations in aqueous media, which have led to dedicated efforts for the complete coverage of the application of metal, metal oxide, bimetallic and supported NPs in water-mediated organic transformations in the last decades. This review aims to provide current highlights on the application of various types of metal NPs for organic transformations in aqueous media. The remarkable benefits associated with the catalytic application of NPs in water allows for various transformations to be performed under very mild and green conditions. Lastly, the author's perspectives are briefly considered, including future developments and crucial challenges in the ever-growing field of nanocatalysis.
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Affiliation(s)
- Suraj R Attar
- Department of Chemistry, Yashavantrao Chavan Institute of Science, Satara, Maharashtra, India.
| | - Santosh B Kamble
- Department of Chemistry, Yashavantrao Chavan Institute of Science, Satara, Maharashtra, India.
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2
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Shiba S, Koike A, Takahashi S, Kato D, Kamata T, Niwa O. Vertically Oriented Metallic Heterodimer Array Semiembedded in Flat Conductive Carbon Film for Electrochemical Application. ACS NANO 2022; 16:10589-10599. [PMID: 35758937 DOI: 10.1021/acsnano.2c02157] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
General synthesis of a highly oriented metallic heterodimer array based on a selective electrodeposition technique onto a metal nanoparticle-embedded carbon film is proposed, which enables the preparation of heterodimers with a wide variety of metal combinations. This method requires no surfactant, capping agent, organic solvent, or heat treatment. As a representative metal combination, a nickel (Ni)/palladium (Pd) heterodimer array was prepared by selective electrodeposition of Ni nanoparticles (Ni NPs) on top of partially exposed Pd NPs embedded in carbon film electrodes fabricated by a cosputtering technique. Such a selective electrodeposition becomes possible by utilizing the difference in electrodeposition overpotentials between carbon and Pd NP surfaces. X-ray photoelectron spectroscopy revealed a charge transfer from Ni NPs to Pd NPs, implying that the catalytic and optical properties can be expected to be controllable. The formed heterodimer array structure was mechanically stable against ultrasonication in ethanol for over 1 h because most parts of the Pd NPs were tightly embedded in the carbon film. After conversion from Ni to nickel hydroxide (Ni(OH)2), the electrode showed high electrocatalytic activity toward glucose oxidation, with a higher turnover rate and lower overpotential compared to Ni(OH)2 electrodeposited on pure carbon film electrodes.
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Affiliation(s)
- Shunsuke Shiba
- Department of Materials Science and Biotechnology, Graduate School of Science and Engineering, Ehime University, Bunkyo-cho 3, Matsuyama, Ehime 790-8577, Japan
| | - Ayaka Koike
- Department of Life Science and Green Chemistry, Faculty of Engineering, Saitama Institute of Technology, 1690 Fusaiji, Fukaya, Saitama 369-0293, Japan
| | - Shota Takahashi
- Department of Life Science and Green Chemistry, Faculty of Engineering, Saitama Institute of Technology, 1690 Fusaiji, Fukaya, Saitama 369-0293, Japan
| | - Dai Kato
- Health and Medical Research Institute, National Institute of Advanced Industrial Science and Technology, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8566, Japan
| | - Tomoyuki Kamata
- Health and Medical Research Institute, National Institute of Advanced Industrial Science and Technology, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8566, Japan
| | - Osamu Niwa
- Advanced Science Research Laboratory, Saitama Institute of Technology, 1690 Fusaiji, Fukaya, Saitama 369-0293, Japan
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3
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Le TC, Zhai J, Chiu WH, Tran PA, Tran N. Janus particles: recent advances in the biomedical applications. Int J Nanomedicine 2019; 14:6749-6777. [PMID: 31692550 PMCID: PMC6711559 DOI: 10.2147/ijn.s169030] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2019] [Accepted: 05/21/2019] [Indexed: 12/13/2022] Open
Abstract
Janus particles, which are named after the two-faced Roman god Janus, have two distinct sides with different surface features, structures, and compositions. This asymmetric structure enables the combination of different or even incompatible physical, chemical, and mechanical properties within a single particle. Much effort has been focused on the preparation of Janus particles with high homogeneity, tunable size and shape, combined functionalities, and scalability. With their unique features, Janus particles have attracted attention in a wide range of applications such as in optics, catalysis, and biomedicine. As a biomedical device, Janus particles offer opportunities to incorporate therapeutics, imaging, or sensing modalities in independent compartments of a single particle in a spatially controlled manner. This may result in synergistic actions of combined therapies and multi-level targeting not possible in isotropic systems. In this review, we summarize the latest advances in employing Janus particles as therapeutic delivery carriers, in vivo imaging probes, and biosensors. Challenges and future opportunities for these particles will also be discussed.
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Affiliation(s)
- Tu C Le
- School of Engineering, RMIT University, Melbourne, VIC 3001,Australia
| | - Jiali Zhai
- School of Science, RMIT University, Melbourne, VIC 3001,Australia
| | - Wei-Hsun Chiu
- School of Chemistry, Physics and Mechanical Engineering, Science and Engineering Faculty, Queensland University of Technology, Brisbane, QLD 4000, Australia
| | - Phong A Tran
- School of Chemistry, Physics and Mechanical Engineering, Science and Engineering Faculty, Queensland University of Technology, Brisbane, QLD 4000, Australia
- Interface Science and Materials Engineering group, School of Chemistry, Physics and Mechanical Engineering, Queensland University of Technology, Brisbane, QLD 4000, Australia
| | - Nhiem Tran
- School of Science, RMIT University, Melbourne, VIC 3001,Australia
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4
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Homogeneous and heterogeneous electrocatalytic reduction of halo-organic compounds by (NiIILi)2+ (Li= tetraaza-macrocyclic ligand) in aqueous solutions. Inorganica Chim Acta 2017. [DOI: 10.1016/j.ica.2017.06.066] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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5
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Adhikary J, Meistelman M, Burg A, Shamir D, Meyerstein D, Albo Y. Reductive Dehalogenation of Monobromo‐ and Tribromoacetic Acid by Sodium Borohydride Catalyzed by Gold Nanoparticles Entrapped in Sol–Gel Matrices Follows Different Pathways. Eur J Inorg Chem 2017. [DOI: 10.1002/ejic.201700069] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
| | | | - Ariela Burg
- Chemical Engineering Department Sami Shamoon College of Engineering Beer‐Sheva Israel
| | - Dror Shamir
- Chemistry Department Nuclear Research Centre Negev Beer‐Sheva Israel
| | - Dan Meyerstein
- Chemical Sciences Department Ariel University Ariel Israel
- Chemistry Department Ben‐Gurion University Beer‐Sheva Israel
| | - Yael Albo
- Chemical Engineering Department Ariel University Ariel Israel
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6
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Najafishirtari S, Kokumai TM, Marras S, Destro P, Prato M, Scarpellini A, Brescia R, Lak A, Pellegrino T, Zanchet D, Manna L, Colombo M. Dumbbell-like Au 0.5Cu 0.5@Fe 3O 4 Nanocrystals: Synthesis, Characterization, and Catalytic Activity in CO Oxidation. ACS APPLIED MATERIALS & INTERFACES 2016; 8:28624-28632. [PMID: 27723286 DOI: 10.1021/acsami.6b09813] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
We report the colloidal synthesis of dumbbell-like Au0.5Cu0.5@Fe3O4 nanocrystals (AuCu@FeOx NCs) and the study of their properties in the CO oxidation reaction. To this aim, the as-prepared NCs were deposited on γ-alumina and pretreated in an oxidizing environment to remove the organic ligands. A comparison of these NCs with bulk Fe3O4-supported AuCu NCs showed that the nanosized support was far more effective in preventing the sintering of the metal domains, leading thus to a superior catalytic activity. Nanosizing of the support could be thus an effective, general strategy to improve the thermal stability of metallic NCs. On the other hand, the support size did not affect the chemical transformations experienced by the AuCu NCs during the activation step. Independently from the support size, we observed indeed the segregation of Cu from the alloy phase under oxidative conditions as well as the possible incorporation of the Cu atoms in the iron oxide domain.
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Affiliation(s)
- Sharif Najafishirtari
- Dipartimento di Chimica e Chimica Industriale, Università di Genova , via Dodecaneso 31-I, 16146 Genova, Italy
| | - Tathiana Midori Kokumai
- Institute of Chemistry, University of Campinas (UNICAMP), P.O. Box 6154, 13083-970 Campinas, São Paulo, Brazil
| | | | - Priscila Destro
- Institute of Chemistry, University of Campinas (UNICAMP), P.O. Box 6154, 13083-970 Campinas, São Paulo, Brazil
| | | | | | | | | | | | - Daniela Zanchet
- Institute of Chemistry, University of Campinas (UNICAMP), P.O. Box 6154, 13083-970 Campinas, São Paulo, Brazil
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7
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Xing G, Zhao L, Sun T, Su Y, Wang X. Hydrothermal derived nitrogen doped SrTiO3 for efficient visible light driven photocatalytic reduction of chromium(VI). SPRINGERPLUS 2016; 5:1132. [PMID: 27478749 PMCID: PMC4951392 DOI: 10.1186/s40064-016-2804-2] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/19/2016] [Accepted: 07/11/2016] [Indexed: 11/10/2022]
Abstract
In this work, we report on the synthesis of nitrogen doped SrTiO3 nanoparticles with efficient visible light driven photocatalytic activity toward Cr(VI) by the solvothermal method. The samples are carefully characterized by X-ray diffraction, scanning electron microscopy, transmission electron microscopy, UV–Vis diffuse reflectance spectroscopy and photocatalytic test. It is found that nitrogen doping in SrTiO3 lattice led to an apparent lattice expansion, particle size reduction as well as subsequent increase of Brunner–Emmet–Teller surface area. The visible light absorption edge and intensity can be modulated by nitrogen doping content, which absorption edge extends to about 600 nm. Moreover, nitrogen doping can not only modulate the visible light absorption feature, but also have consequence on the enhancement of charge separation efficiency, which can promote the photocatalytic activity. With well controlled particle size, Brunner–Emmet–Teller surface area, and electronic structure via nitrogen doping, the photocatalytic performance toward Cr(VI) reduction of nitrogen doped SrTiO3 was optimized at initial hexamethylenetetramine content of 2.
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Affiliation(s)
- Guanjie Xing
- College of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot, Inner Mongolia 010021 People's Republic of China
| | - Lanxiao Zhao
- College of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot, Inner Mongolia 010021 People's Republic of China
| | - Tao Sun
- College of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot, Inner Mongolia 010021 People's Republic of China
| | - Yiguo Su
- College of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot, Inner Mongolia 010021 People's Republic of China
| | - Xiaojing Wang
- College of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot, Inner Mongolia 010021 People's Republic of China
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8
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Tahir MN, Herzberger J, Natalio F, Köhler O, Branscheid R, Mugnaioli E, Ksenofontov V, Panthöfer M, Kolb U, Frey H, Tremel W. Hierachical Ni@Fe2O3 superparticles through epitaxial growth of γ-Fe2O3 nanorods on in situ formed Ni nanoplates. NANOSCALE 2016; 8:9548-9555. [PMID: 26818395 DOI: 10.1039/c6nr00065g] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
One endeavour of nanochemistry is the bottom-up synthesis of functional mesoscale structures from basic building blocks. We report a one-pot wet chemical synthesis of Ni@γ-Fe2O3 superparticles containing Ni cores densely covered with highly oriented γ-Fe2O3 (maghemite) nanorods (NRs) by controlled reduction/decomposition of nickel acetate (Ni(ac)2) and Fe(CO)5. Automated diffraction tomography (ADT) of the Ni-Fe2O3 interface in combination with Mössbauer spectroscopy showed that selective and oriented growth of the γ-Fe2O3 nanorods on the Ni core is facilitated through the formation of a Fe0.05Ni0.95 alloy and the appearance of superstructure features that may reduce strain at the Ni-Fe2O3 interface. The common orientation of the maghemite nanorods on the Ni core of the superparticles leads to a greatly enhanced magnetization. After functionalization with a catechol-functional polyethylene glycol (C-PEG) ligand the Ni@γ-Fe2O3 superparticles were dispersible in water.
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Affiliation(s)
- Muhammad Nawaz Tahir
- Institut für Anorganische Chemie und Analytische Chemie der Johannes Gutenberg-Universität, Duesbergweg 10-14, D-55099 Mainz, Germany.
| | - Jana Herzberger
- Institut für Organische Chemie, Johannes-Gutenberg-Universität, Duesbergweg 10-14, D-55099 Mainz, Germany and Graduate School Materials Science in Mainz, Staudinger Weg 9, 55128 Mainz, Germany
| | - Filipe Natalio
- Institut für Anorganische Chemie und Analytische Chemie der Johannes Gutenberg-Universität, Duesbergweg 10-14, D-55099 Mainz, Germany.
| | - Oskar Köhler
- Institut für Anorganische Chemie und Analytische Chemie der Johannes Gutenberg-Universität, Duesbergweg 10-14, D-55099 Mainz, Germany.
| | - Robert Branscheid
- Institut für Physikalische Chemie, Johannes-Gutenberg-Universität, Welderweg 15, D-55099 Mainz, Germany
| | - Enrico Mugnaioli
- Institut für Physikalische Chemie, Johannes-Gutenberg-Universität, Welderweg 15, D-55099 Mainz, Germany
| | - Vadim Ksenofontov
- Institut für Anorganische Chemie und Analytische Chemie der Johannes Gutenberg-Universität, Duesbergweg 10-14, D-55099 Mainz, Germany.
| | - Martin Panthöfer
- Institut für Anorganische Chemie und Analytische Chemie der Johannes Gutenberg-Universität, Duesbergweg 10-14, D-55099 Mainz, Germany.
| | - Ute Kolb
- Institut für Physikalische Chemie, Johannes-Gutenberg-Universität, Welderweg 15, D-55099 Mainz, Germany
| | - Holger Frey
- Institut für Organische Chemie, Johannes-Gutenberg-Universität, Duesbergweg 10-14, D-55099 Mainz, Germany
| | - Wolfgang Tremel
- Institut für Anorganische Chemie und Analytische Chemie der Johannes Gutenberg-Universität, Duesbergweg 10-14, D-55099 Mainz, Germany.
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9
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Mishra K, Basavegowda N, Lee YR. Access to enhanced catalytic core–shell CuO–Pd nanoparticles for the organic transformations. RSC Adv 2016. [DOI: 10.1039/c6ra03883b] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
This paper describes the biosynthesis of core–shell CuO–Pd nanocatalysts with the aid of a Cyperus rotundus rhizome extract.
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Affiliation(s)
- Kanchan Mishra
- School of Chemical Engineering
- Yeungnam University
- Gyeongsan 712-749
- Republic of Korea
| | - Nagaraj Basavegowda
- School of Chemical Engineering
- Yeungnam University
- Gyeongsan 712-749
- Republic of Korea
| | - Yong Rok Lee
- School of Chemical Engineering
- Yeungnam University
- Gyeongsan 712-749
- Republic of Korea
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10
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Susewind M, Schilmann AM, Heim J, Henkel A, Link T, Fischer K, Strand D, Kolb U, Tahir MN, Brieger J, Tremel W. Silica-coated Au@ZnO Janus particles and their stability in epithelial cells. J Mater Chem B 2015; 3:1813-1822. [DOI: 10.1039/c4tb02017k] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Multicomponent particles have emerged in recent years as new compartmentalized colloids with two sides of different chemistry or polarity that have opened up a wide field of unique applications in medicine, physics and chemistry.
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11
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Chen Z, Wang M, Zhao C, Lin Y, Yang R, Wang Z. Shape-controlled synthesis of Fe3O4/CeO2hybrid octahedra for lipase immobilization. CrystEngComm 2015. [DOI: 10.1039/c4ce02393e] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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12
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Schick I, Lorenz S, Gehrig D, Tenzer S, Storck W, Fischer K, Strand D, Laquai F, Tremel W. Inorganic Janus particles for biomedical applications. BEILSTEIN JOURNAL OF NANOTECHNOLOGY 2014; 5:2346-62. [PMID: 25551063 PMCID: PMC4273258 DOI: 10.3762/bjnano.5.244] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2014] [Accepted: 11/13/2014] [Indexed: 05/26/2023]
Abstract
Based on recent developments regarding the synthesis and design of Janus nanoparticles, they have attracted increased scientific interest due to their outstanding properties. There are several combinations of multicomponent hetero-nanostructures including either purely organic or inorganic, as well as composite organic-inorganic compounds. Janus particles are interconnected by solid state interfaces and, therefore, are distinguished by two physically or chemically distinct surfaces. They may be, for instance, hydrophilic on one side and hydrophobic on the other, thus, creating giant amphiphiles revealing the endeavor of self-assembly. Novel optical, electronic, magnetic, and superficial properties emerge in inorganic Janus particles from their dimensions and unique morphology at the nanoscale. As a result, inorganic Janus nanoparticles are highly versatile nanomaterials with great potential in different scientific and technological fields. In this paper, we highlight some advances in the synthesis of inorganic Janus nanoparticles, focusing on the heterogeneous nucleation technique and characteristics of the resulting high quality nanoparticles. The properties emphasized in this review range from the monodispersity and size-tunability and, therefore, precise control over size-dependent features, to the biomedical application as theranostic agents. Hence, we show their optical properties based on plasmonic resonance, the two-photon activity, the magnetic properties, as well as their biocompatibility and interaction with human blood serum.
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Affiliation(s)
- Isabel Schick
- Institut für Anorganische Chemie und Analytische Chemie, Johannes Gutenberg-Universität, Duesbergweg 10–14, 55128 Mainz, Germany
| | - Steffen Lorenz
- Medizinische Klinik und Polyklinik, Universitätsmedizin der Johannes Gutenberg-Universität, Langenbeckstrasse 1, 55131 Mainz, Germany
| | - Dominik Gehrig
- Max-Planck-Institut für Polymerforschung, Max-Planck-Forschungsgruppe für Organische Optoelektronik, Ackermannweg 10, 55128 Mainz, Germany
| | - Stefan Tenzer
- Medizinische Klinik und Polyklinik, Universitätsmedizin der Johannes Gutenberg-Universität, Langenbeckstrasse 1, 55131 Mainz, Germany
| | - Wiebke Storck
- Medizinische Klinik und Polyklinik, Universitätsmedizin der Johannes Gutenberg-Universität, Langenbeckstrasse 1, 55131 Mainz, Germany
| | - Karl Fischer
- Institut für Physikalische Chemie, Johannes Gutenberg-Universität, Jakob-Welder-Weg 11, 55128 Mainz, Germany
| | - Dennis Strand
- Medizinische Klinik und Polyklinik, Universitätsmedizin der Johannes Gutenberg-Universität, Langenbeckstrasse 1, 55131 Mainz, Germany
| | - Frédéric Laquai
- Max-Planck-Institut für Polymerforschung, Max-Planck-Forschungsgruppe für Organische Optoelektronik, Ackermannweg 10, 55128 Mainz, Germany
| | - Wolfgang Tremel
- Institut für Anorganische Chemie und Analytische Chemie, Johannes Gutenberg-Universität, Duesbergweg 10–14, 55128 Mainz, Germany
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Schick I, Lorenz S, Gehrig D, Schilmann AM, Bauer H, Panthöfer M, Fischer K, Strand D, Laquai F, Tremel W. Multifunctional two-photon active silica-coated Au@MnO Janus particles for selective dual functionalization and imaging. J Am Chem Soc 2014; 136:2473-83. [PMID: 24460244 DOI: 10.1021/ja410787u] [Citation(s) in RCA: 101] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Monodisperse multifunctional and nontoxic Au@MnO Janus particles with different sizes and morphologies were prepared by a seed-mediated nucleation and growth technique with precise control over domain sizes, surface functionalization, and dye labeling. The metal oxide domain could be coated selectively with a thin silica layer, leaving the metal domain untouched. In particular, size and morphology of the individual (metal and metal oxide) domains could be controlled by adjustment of the synthetic parameters. The SiO2 coating of the oxide domain allows biomolecule conjugation (e.g., antibodies, proteins) in a single step for converting the photoluminescent and superparamagnetic Janus nanoparticles into multifunctional efficient vehicles for theranostics. The Au@MnO@SiO2 Janus particles were characterized using high-resolution transmission electron microscopy (HR-)TEM, powder X-ray diffraction (PXRD), optical (UV-vis) spectroscopy, confocal laser fluorescence scanning microscopy (CLSM), and dynamic light scattering (DLS). The functionalized nanoparticles were stable in buffer solution or serum, showing no indication of aggregation. Biocompatibility and potential biomedical applications of the Au@MnO@SiO2 Janus particles were assayed by a cell viability analysis by coincubating the Au@MnO@SiO2 Janus particles with Caki 1 and HeLa cells. Time-resolved fluorescence spectroscopy in combination with CLSM revealed the silica-coated Au@MnO@SiO2 Janus particles to be highly two-photon active; no indication for an electronic interaction between the dye molecules incorporated in the silica shell surrounding the MnO domains and the attached Au domains was found; fluorescence quenching was observed when dye molecules were bound directly to the Au domains.
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Affiliation(s)
- Isabel Schick
- Institut für Anorganische Chemie und Analytische Chemie, Johannes Gutenberg-Universität , Duesbergweg 10-14, 55128 Mainz, Germany
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14
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Chen Z, Xu W, Zhang Z, Geng Z, Tao T, Yang R, Liu R, Xie W, Wang Z. Template-free synthesis and magnetic properties of hollow Cu/Fe3O4 heterodimer sub-microcactus. CrystEngComm 2014. [DOI: 10.1039/c3ce42331j] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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15
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Tahir MN, Natalio F, Cambaz MA, Panthöfer M, Branscheid R, Kolb U, Tremel W. Controlled synthesis of linear and branched Au@ZnO hybrid nanocrystals and their photocatalytic properties. NANOSCALE 2013; 5:9944-9949. [PMID: 23986102 DOI: 10.1039/c3nr02817h] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Colloidal Au@ZnO hybrid nanocrystals with linear and branched shape were synthesized. The number of ZnO domains on the Au seeds can be controlled by the solvent mixture. Imidazole-functionalized Au@ZnO hybrid nanocrystals were soluble in water and exhibited a greatly enhanced photocatalytic activity compared to ZnO nanocrystals. The pristine heterodimeric NPs were characterized using transmission electron microscopy (TEM), X-ray diffraction (XRD), and UV-Vis spectroscopy.
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Affiliation(s)
- Muhammad Nawaz Tahir
- Institut für Anorganische Chemie und Analytische Chemie, Johannes Gutenberg-Universität, Duesbergweg 10-14, D-55099 Mainz, Germany.
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16
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Zhang D, Zhou C, Sun Z, Wu LZ, Tung CH, Zhang T. Magnetically recyclable nanocatalysts (MRNCs): a versatile integration of high catalytic activity and facile recovery. NANOSCALE 2012; 4:6244-55. [PMID: 22965398 DOI: 10.1039/c2nr31929b] [Citation(s) in RCA: 95] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Recent advances in wet chemical synthesis of magnetically recyclable nanocatalysts (MRNCs), a versatile integration of high catalytic activity and facile recovery, have led to a dramatic expansion of their potential applications. This review focuses on the recent work in the development of metal and metal oxide based MRNCs for catalytic conversion of organic compounds in solution phase. This will be discussed in detail, according to the two main synthesis methods of MRNCs as classified by us. The two methods are: template-assisted synthetic strategy and direct synthetic strategy. And the template-assisted synthesis is further divided into three subcategories, synthetic strategies assisted by hard-, soft-, and mixed hard-soft coupling layers. At the end, we outline future trends and perspectives in these research areas.
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Affiliation(s)
- Donghui Zhang
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, PR China
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