1
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Doswald S, Stark WJ. Preparation of Functionalized Carbon-Coated Cobalt Nanoparticles with Sulfonated Arene Derivatives, a Study on Surface Functionalization and Stability. Chemistry 2021; 27:4108-4114. [PMID: 33350514 DOI: 10.1002/chem.202004631] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2020] [Revised: 12/18/2020] [Indexed: 11/10/2022]
Abstract
The functionalization of magnetic nanoparticles has been an important field in the last decade due to the versatile applications in catalysis and biomedicine. Generally, a high degree of functionalities on the surface of the nanoparticles is desired. In this study, covalent functionalization of various aromatic sulfonic acids on carbon-coated cobalt nanoparticles are investigated on surface functionalization yield and stability. The nanoparticles are prepared via covalent linkage of an in situ generated diazonium on the graphene-like surface. Adsorption and wash experiments were performed to confirm a covalent bonding of the naphthalene derivatives on the nanoparticle surface. With an increased number of sulfonic acid groups on the aromatic compound a significantly lower loading is observed on the corresponding functionalized nanoparticles. This can be counteracted by a change of nitrite species. With this method, nanoparticles with a high number of sulfonic acid groups can be produced.
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Affiliation(s)
- Simon Doswald
- Institute for Chemical and Bioengineering, ETH Zurich, Vladimir-Prelog-Weg 1, 8093, Zurich, Switzerland
| | - Wendelin J Stark
- Institute for Chemical and Bioengineering, ETH Zurich, Vladimir-Prelog-Weg 1, 8093, Zurich, Switzerland
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2
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Anthis AHC, Matter MT, Keevend K, Gerken LRH, Scheibler S, Doswald S, Gogos A, Herrmann IK. Tailoring the Colloidal Stability, Magnetic Separability, and Cytocompatibility of High-Capacity Magnetic Anion Exchangers. ACS APPLIED MATERIALS & INTERFACES 2019; 11:48341-48351. [PMID: 31747521 DOI: 10.1021/acsami.9b16619] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Extracorporeal blood purification has been applied to artificially support kidney or liver function. However, convection and diffusion based blood purification systems have limited removal rates for high molecular weight and hydrophobic molecules. This limitation is due to the finite volume of infusion and limited membrane permeability, respectively. Adsorption provides an attractive alternative for the removal of higher molecular weight compounds. The use of adsorption resins containing ion exchanging groups to capture specific molecules has become well-established. Instead of stationary adsorption resins, however, ion exchanging polymers may be immobilized on magnetic particles and serve as freely diffusing, mobile, high capacity solid phase of ion exchange chromatography. While small beads with high surface area are attractive in terms of mass transfer and binding, unifying high capturing capacity with rapid and quantitative bead recovery remains an issue. Therefore, most of the current magnetic ion exchangers are based on micron-sized beads or require long times to separate. In addition to unfavorable magnetic recovery rates, the usually poor cytocompatibility limits their applicability in biomedicine. Here, we report on the synthesis and performance of polycationic polymer coated magnetic nanoflowers (MNF) for highly efficacious anion capturing. We demonstrate accurate control over the polymer content and composition on the beads and show its direct influence on colloidal stability, capturing capacity and magnetic separability. We present the removal of clinically relevant targets by capturing bilirubin with capacities 2-fold higher than previous work as well as quantitative heparin removal. Additionally, we illustrate how copolymerization of poly(2-dimethylaminoethyl methacrylate) (PDMAEMA) with poly(ethylene glycol) methyl ether methacrylate (PEGMEMA) leads to improved cytocompatibility of the polymer-coated MNF capturing agents while retaining high capturing capacities. Taken together, we present a nanoparticle/polymer material, which upon future in vivo validation, unifies high binding capacities and magnetic separability for rapid toxin capturing and hence fulfills key requirements of clinical utility.
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Affiliation(s)
- Alexandre H C Anthis
- Laboratory for Particles Biology Interactions, Department Materials Meet Life , Swiss Federal Laboratories for Materials Science and Technology (Empa) , Lerchenfeldstrasse 5 , CH-9014 St. Gallen , Switzerland
- Nanoparticle Systems Engineering Laboratory, Institute of Process Engineering, Department of Mechanical and Process Engineering , ETH Zurich , Sonneggstrasse 3 , CH-8092 Zurich , Switzerland
| | - Martin T Matter
- Laboratory for Particles Biology Interactions, Department Materials Meet Life , Swiss Federal Laboratories for Materials Science and Technology (Empa) , Lerchenfeldstrasse 5 , CH-9014 St. Gallen , Switzerland
- Nanoparticle Systems Engineering Laboratory, Institute of Process Engineering, Department of Mechanical and Process Engineering , ETH Zurich , Sonneggstrasse 3 , CH-8092 Zurich , Switzerland
| | - Kerda Keevend
- Laboratory for Particles Biology Interactions, Department Materials Meet Life , Swiss Federal Laboratories for Materials Science and Technology (Empa) , Lerchenfeldstrasse 5 , CH-9014 St. Gallen , Switzerland
- Nanoparticle Systems Engineering Laboratory, Institute of Process Engineering, Department of Mechanical and Process Engineering , ETH Zurich , Sonneggstrasse 3 , CH-8092 Zurich , Switzerland
| | - Lukas R H Gerken
- Laboratory for Particles Biology Interactions, Department Materials Meet Life , Swiss Federal Laboratories for Materials Science and Technology (Empa) , Lerchenfeldstrasse 5 , CH-9014 St. Gallen , Switzerland
- Nanoparticle Systems Engineering Laboratory, Institute of Process Engineering, Department of Mechanical and Process Engineering , ETH Zurich , Sonneggstrasse 3 , CH-8092 Zurich , Switzerland
| | - Subas Scheibler
- Laboratory for Particles Biology Interactions, Department Materials Meet Life , Swiss Federal Laboratories for Materials Science and Technology (Empa) , Lerchenfeldstrasse 5 , CH-9014 St. Gallen , Switzerland
- Nanoparticle Systems Engineering Laboratory, Institute of Process Engineering, Department of Mechanical and Process Engineering , ETH Zurich , Sonneggstrasse 3 , CH-8092 Zurich , Switzerland
- Laboratory for Magnetic and Functional Thin Films, Department Materials Meet Life , Swiss Federal Laboratories for Materials Science and Technology (Empa) , Überlandstrasse 129 , CH-8600 Dübendorf , Switzerland
| | - Simon Doswald
- Functional Materials Laboratory, Institute for Chemical and Bioengineering, Department of Chemistry and Applied Biosciences , ETH Zurich , Vladimir-Prelog-Weg 1 , CH-8093 Zurich , Switzerland
| | - Alexander Gogos
- Laboratory for Particles Biology Interactions, Department Materials Meet Life , Swiss Federal Laboratories for Materials Science and Technology (Empa) , Lerchenfeldstrasse 5 , CH-9014 St. Gallen , Switzerland
| | - Inge K Herrmann
- Laboratory for Particles Biology Interactions, Department Materials Meet Life , Swiss Federal Laboratories for Materials Science and Technology (Empa) , Lerchenfeldstrasse 5 , CH-9014 St. Gallen , Switzerland
- Nanoparticle Systems Engineering Laboratory, Institute of Process Engineering, Department of Mechanical and Process Engineering , ETH Zurich , Sonneggstrasse 3 , CH-8092 Zurich , Switzerland
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3
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Starsich FH, Herrmann IK, Pratsinis SE. Nanoparticles for Biomedicine: Coagulation During Synthesis and Applications. Annu Rev Chem Biomol Eng 2019; 10:155-174. [DOI: 10.1146/annurev-chembioeng-060718-030203] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Nanoparticle-based systems offer fascinating possibilities for biomedicine, but their translation into clinics is slow. Missing sterile, reproducible, and scalable methods for their synthesis along with challenges in characterization and poor colloidal stability of nanoparticles in body fluids are key obstacles. Flame aerosol technology gives proven access to scalable synthesis of nanoparticles with diverse compositions and architectures. Although highly promising in terms of product reproducibility and sterility, this technology is frequently overlooked, as its products are of fractal-like aggregated and/or agglomerated morphology. However, coagulation is a widely occurring phenomenon in all kinds of particle-based systems. In particular, protein-rich body fluids encountered in biomedical settings often lead to destabilization of colloidal nanoparticle suspensions in vivo. We aim to provide insights into how particle–particle interactions can be measured and controlled. Moreover, we show how particle coupling effects driven by coagulation may even be beneficial for certain sensing, therapeutic, and bioimaging applications.
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Affiliation(s)
- Fabian H.L. Starsich
- Particle Technology Laboratory, Institute of Process Engineering, Department of Mechanical and Process Engineering, ETH Zurich, CH-8092 Zurich, Switzerland;,
| | - Inge K. Herrmann
- Particles-Biology Interactions, Department of Materials Meet Life, Swiss Federal Laboratories for Materials Science and Technology (Empa), CH-9014 St. Gallen, Switzerland
| | - Sotiris E. Pratsinis
- Particle Technology Laboratory, Institute of Process Engineering, Department of Mechanical and Process Engineering, ETH Zurich, CH-8092 Zurich, Switzerland;,
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4
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Doswald S, Stark WJ, Beck-Schimmer B. Biochemical functionality of magnetic particles as nanosensors: how far away are we to implement them into clinical practice? J Nanobiotechnology 2019; 17:73. [PMID: 31151445 PMCID: PMC6544934 DOI: 10.1186/s12951-019-0506-y] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2019] [Accepted: 05/27/2019] [Indexed: 01/09/2023] Open
Abstract
Magnetic nanosensors have become attractive instruments for the diagnosis and treatment of different diseases. They represent an efficient carrier system in drug delivery or in transporting contrast agents. For such purposes, magnetic nanosensors are used in vivo (intracorporeal application). To remove specific compounds from blood, magnetic nanosensors act as elimination system, which represents an extracorporeal approach. This review discusses principles, advantages and risks on recent advances in the field of magnetic nanosensors. First, synthesis methods for magnetic nanosensors and possibilities for enhancement of biocompatibility with different coating materials are addressed. Then, attention is devoted to clinical applications, in which nanosensors are or may be used as carrier- and elimination systems in the near future. Finally, risk considerations and possible effects of nanomaterials are discussed when working towards clinical applications with magnetic nanosensors.
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Affiliation(s)
- Simon Doswald
- Institute for Chemical and Bioengineering, ETH Zurich, Zurich, Switzerland
| | - Wendelin Jan Stark
- Institute for Chemical and Bioengineering, ETH Zurich, Zurich, Switzerland
| | - Beatrice Beck-Schimmer
- Institute of Anesthesiology, University of Zurich and University Hospital Zurich, Raemistrasse 100, 8091, Zurich, Switzerland.
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5
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Folgado E, Guerre M, Mimouni N, Collière V, Bijani C, Moineau-Chane Ching K, Caminade AM, Ladmiral V, Améduri B, Ouali A. π-Stacking Interactions of Graphene-Coated Cobalt Magnetic Nanoparticles with Pyrene-Tagged Dendritic Poly(Vinylidene Fluoride). Chempluschem 2018; 84:78-84. [PMID: 31950752 DOI: 10.1002/cplu.201800471] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2018] [Revised: 11/09/2018] [Indexed: 12/27/2022]
Abstract
This study investigates the non-covalent coating of cobalt magnetic nanoparticles (MNPs) involving a graphene surface with pyrene-tagged dendritic poly(vinylidene fluoride) (PVDF). Dendrimers bearing a pyrene moiety were selected to play the role of spacers between the graphene surface of the MNPs and the PVDF chains, the pyrene unit being expected to interact with the surface of the MNPs. The pyrene-tagged dendritic spacer 11 decorated with ten acetylenic units was prepared and fully characterized. Azido-functionalized PVDF chains were then grafted onto each branch of the dendrimer using Huisgen's [3+2] cycloaddition reaction. Next, the association of the resulting pyrene-tagged dendritic PVDF 13 with commercially available Co/C MNPs by π-stacking interactions was studied by fluorescence spectroscopy. Evaluated were the stability of the π-stacking interactions when the temperature increased and the reversibility of the process when the temperature decreased. Also, hybrid MNPs were prepared from pyrene-tagged dendrimers decorated either with acetylenic functions (11) or with PVDF branches (13), and they were characterized by transmission electron microscopy and comparative elemental analysis was carried out with naked MNPs.
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Affiliation(s)
- Enrique Folgado
- Institut Charles Gerhardt - UMR 5253 - CNRS, UM, ENSCM, 8 Rue de l'Ecole Normale, 34296, Montpellier Cedex 5, France
| | - Marc Guerre
- Institut Charles Gerhardt - UMR 5253 - CNRS, UM, ENSCM, 8 Rue de l'Ecole Normale, 34296, Montpellier Cedex 5, France
| | - Nidhal Mimouni
- Laboratoire de Chimie de Coordination du CNRS, 205 Route de Narbonne, BP 44099, 31077, Toulouse Cedex 4, France.,LCC-CNRS, Université de Toulouse, CNRS, Toulouse, France
| | - Vincent Collière
- Laboratoire de Chimie de Coordination du CNRS, 205 Route de Narbonne, BP 44099, 31077, Toulouse Cedex 4, France.,LCC-CNRS, Université de Toulouse, CNRS, Toulouse, France
| | - Christian Bijani
- Laboratoire de Chimie de Coordination du CNRS, 205 Route de Narbonne, BP 44099, 31077, Toulouse Cedex 4, France.,LCC-CNRS, Université de Toulouse, CNRS, Toulouse, France
| | - Kathleen Moineau-Chane Ching
- Laboratoire de Chimie de Coordination du CNRS, 205 Route de Narbonne, BP 44099, 31077, Toulouse Cedex 4, France.,LCC-CNRS, Université de Toulouse, CNRS, Toulouse, France
| | - Anne-Marie Caminade
- Laboratoire de Chimie de Coordination du CNRS, 205 Route de Narbonne, BP 44099, 31077, Toulouse Cedex 4, France.,LCC-CNRS, Université de Toulouse, CNRS, Toulouse, France
| | - Vincent Ladmiral
- Institut Charles Gerhardt - UMR 5253 - CNRS, UM, ENSCM, 8 Rue de l'Ecole Normale, 34296, Montpellier Cedex 5, France
| | - Bruno Améduri
- Institut Charles Gerhardt - UMR 5253 - CNRS, UM, ENSCM, 8 Rue de l'Ecole Normale, 34296, Montpellier Cedex 5, France
| | - Armelle Ouali
- Institut Charles Gerhardt - UMR 5253 - CNRS, UM, ENSCM, 8 Rue de l'Ecole Normale, 34296, Montpellier Cedex 5, France
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6
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Khort A, Podbolotov K, Serrano-García R, Gun’ko Y. One-Step Solution Combustion Synthesis of Cobalt Nanopowder in Air Atmosphere: The Fuel Effect. Inorg Chem 2018; 57:1464-1473. [DOI: 10.1021/acs.inorgchem.7b02848] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
| | - Kirill Podbolotov
- Department
of Glass and Ceramic Technologies, Belarusian State Technological University, Minsk 220006, Belarus
| | | | - Yurii Gun’ko
- Trinity College Dublin, Dublin 2, Ireland
- ITMO University, St. Petersburg 197101, Russia
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7
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Hofer CJ, Grass RN, Schneider EM, Hendriks L, Herzog AF, Zeltner M, Günther D, Stark WJ. Water dispersible surface-functionalized platinum/carbon nanorattles for size-selective catalysis. Chem Sci 2018; 9:362-367. [PMID: 29629105 PMCID: PMC5868313 DOI: 10.1039/c7sc03785f] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2017] [Accepted: 10/27/2017] [Indexed: 12/12/2022] Open
Abstract
Selective dealloying of metal nanoparticles results in rattle-type hollow carbon nanoshells enclosing platinum nanoparticles, which are able to perform size-selective catalysis. Selective functionalization of the outer graphene-like carbon surface prevents agglomeration and leads to well dispersible nanocatalysts in aqueous solutions. The synthesis starts with the production of nanoparticles with a cobalt-platinum-alloy core surrounded by graphene-like carbon via reducing flame spray synthesis. After surface functionalization, simultaneous pore formation in the shell-wall and dissolution of the cobalt results in platinum encapsulated in hollow carbon nanospheres. Catalytic oxidation of differently sized sugars (glucose and maltoheptaose) reveales size-selective catalytic properties of these platinum nanorattles.
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Affiliation(s)
- Corinne J Hofer
- Institute for Chemical and Bioengineering , ETH Zurich , Vladimir-Prelog-Weg 1 , 8093 Zurich , Switzerland .
| | - Robert N Grass
- Institute for Chemical and Bioengineering , ETH Zurich , Vladimir-Prelog-Weg 1 , 8093 Zurich , Switzerland .
| | - Elia M Schneider
- Institute for Chemical and Bioengineering , ETH Zurich , Vladimir-Prelog-Weg 1 , 8093 Zurich , Switzerland .
| | - Lyndsey Hendriks
- Laboratory of Inorganic Chemistry , ETH Zurich , Vladimir-Prelog-Weg 1 , 8093 Zurich , Switzerland
| | - Antoine F Herzog
- Institute for Chemical and Bioengineering , ETH Zurich , Vladimir-Prelog-Weg 1 , 8093 Zurich , Switzerland .
| | - Martin Zeltner
- Institute for Chemical and Bioengineering , ETH Zurich , Vladimir-Prelog-Weg 1 , 8093 Zurich , Switzerland .
| | - Detlef Günther
- Laboratory of Inorganic Chemistry , ETH Zurich , Vladimir-Prelog-Weg 1 , 8093 Zurich , Switzerland
| | - Wendelin J Stark
- Institute for Chemical and Bioengineering , ETH Zurich , Vladimir-Prelog-Weg 1 , 8093 Zurich , Switzerland .
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8
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Zwyssig A, Schneider EM, Zeltner M, Rebmann B, Zlateski V, Grass RN, Stark WJ. Protein Reduction and Dialysis-Free Work-Up through Phosphines Immobilized on a Magnetic Support: TCEP-Functionalized Carbon-Coated Cobalt Nanoparticles. Chemistry 2017; 23:8585-8589. [DOI: 10.1002/chem.201701162] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2017] [Indexed: 12/22/2022]
Affiliation(s)
- Adrian Zwyssig
- D-CHAB, ICB; ETH Zurich; Vladimir-Prelog-Weg 1 8093 Zurich Switzerland
| | - Elia M. Schneider
- D-CHAB, ICB; ETH Zurich; Vladimir-Prelog-Weg 1 8093 Zurich Switzerland
| | - Martin Zeltner
- D-CHAB, ICB; ETH Zurich; Vladimir-Prelog-Weg 1 8093 Zurich Switzerland
| | - Balder Rebmann
- Faculty of Biology, and Centre for Biological Signalling Studies; University of Freiburg; Schaenzlestrasse 18 79104 Freiburg Germany
| | - Vladimir Zlateski
- D-CHAB, ICB; ETH Zurich; Vladimir-Prelog-Weg 1 8093 Zurich Switzerland
| | - Robert N. Grass
- D-CHAB, ICB; ETH Zurich; Vladimir-Prelog-Weg 1 8093 Zurich Switzerland
| | - Wendelin J. Stark
- D-CHAB, ICB; ETH Zurich; Vladimir-Prelog-Weg 1 8093 Zurich Switzerland
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9
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Schneider EM, Zeltner M, Zlateski V, Grass RN, Stark WJ. Click and release: fluoride cleavable linker for mild bioorthogonal separation. Chem Commun (Camb) 2016; 52:938-41. [PMID: 26584274 DOI: 10.1039/c5cc07692g] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Herein, we present a water dispersable, magnetic nanoparticle supported "click and release" system. The cleavable linker has been synthesized by using a strain-promoted copper-free "click" reagent to establish the specific link and a fluoride cleavable silane moiety for mild cleavage. Small organic molecules, azide-bearing dyes and functionalized enzymes have been bound to the magnetic particle and released in a bioorthogonal way.
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Affiliation(s)
- Elia M Schneider
- Institute for Chemical and Bioengineering, ETH Zurich, Vladimir-Prelog-Weg 1, 8093 Zurich, Switzerland.
| | - Martin Zeltner
- Institute for Chemical and Bioengineering, ETH Zurich, Vladimir-Prelog-Weg 1, 8093 Zurich, Switzerland.
| | - Vladimir Zlateski
- Institute for Chemical and Bioengineering, ETH Zurich, Vladimir-Prelog-Weg 1, 8093 Zurich, Switzerland.
| | - Robert N Grass
- Institute for Chemical and Bioengineering, ETH Zurich, Vladimir-Prelog-Weg 1, 8093 Zurich, Switzerland.
| | - Wendelin J Stark
- Institute for Chemical and Bioengineering, ETH Zurich, Vladimir-Prelog-Weg 1, 8093 Zurich, Switzerland.
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10
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Hofer CJ, Grass RN, Zeltner M, Mora CA, Krumeich F, Stark WJ. Hollow Carbon Nanobubbles: Synthesis, Chemical Functionalization, and Container-Type Behavior in Water. Angew Chem Int Ed Engl 2016; 55:8761-5. [DOI: 10.1002/anie.201602745] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2016] [Indexed: 11/05/2022]
Affiliation(s)
- Corinne J. Hofer
- Institute for Chemical and Bioengineering; ETH Zurich; Vladimir-Prelog-Weg 1 8093 Zurich Switzerland
| | - Robert N. Grass
- Institute for Chemical and Bioengineering; ETH Zurich; Vladimir-Prelog-Weg 1 8093 Zurich Switzerland
| | - Martin Zeltner
- Institute for Chemical and Bioengineering; ETH Zurich; Vladimir-Prelog-Weg 1 8093 Zurich Switzerland
| | - Carlos A. Mora
- Institute for Chemical and Bioengineering; ETH Zurich; Vladimir-Prelog-Weg 1 8093 Zurich Switzerland
| | - Frank Krumeich
- Institute for Chemical and Bioengineering; ETH Zurich; Vladimir-Prelog-Weg 1 8093 Zurich Switzerland
| | - Wendelin J. Stark
- Institute for Chemical and Bioengineering; ETH Zurich; Vladimir-Prelog-Weg 1 8093 Zurich Switzerland
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11
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Hofer CJ, Grass RN, Zeltner M, Mora CA, Krumeich F, Stark WJ. Kohlenstoff-Nanobläschen: Synthese, chemische Funktionalisierung und containerartiges Verhalten in Wasser. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201602745] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Corinne J. Hofer
- Institut für Chemie- und Bioingenieurwissenschaften; ETH Zürich; Vladimir-Prelog-Weg 1 8093 Zürich Schweiz
| | - Robert N. Grass
- Institut für Chemie- und Bioingenieurwissenschaften; ETH Zürich; Vladimir-Prelog-Weg 1 8093 Zürich Schweiz
| | - Martin Zeltner
- Institut für Chemie- und Bioingenieurwissenschaften; ETH Zürich; Vladimir-Prelog-Weg 1 8093 Zürich Schweiz
| | - Carlos A. Mora
- Institut für Chemie- und Bioingenieurwissenschaften; ETH Zürich; Vladimir-Prelog-Weg 1 8093 Zürich Schweiz
| | - Frank Krumeich
- Institut für Chemie- und Bioingenieurwissenschaften; ETH Zürich; Vladimir-Prelog-Weg 1 8093 Zürich Schweiz
| | - Wendelin J. Stark
- Institut für Chemie- und Bioingenieurwissenschaften; ETH Zürich; Vladimir-Prelog-Weg 1 8093 Zürich Schweiz
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12
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Cao D, Pan L, Li H, Li J, Wang X, Cheng X, Wang Z, Wang J, Liu Q. A facile strategy for synthesis of spinel ferrite nano-granules and their potential applications. RSC Adv 2016. [DOI: 10.1039/c6ra13373h] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A number of spinel ferrite nano-granules were synthesized in DMF through a calcination process under air.
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Affiliation(s)
- Derang Cao
- Key Laboratory for Magnetism and Magnetic Materials of the Ministry of Education
- Lanzhou University
- Lanzhou 730000
- People's Republic of China
| | - Lining Pan
- Key Laboratory for Magnetism and Magnetic Materials of the Ministry of Education
- Lanzhou University
- Lanzhou 730000
- People's Republic of China
| | - Hao Li
- Key Laboratory of Special Function Materials and Structure Design
- Ministry of Education
- Lanzhou University
- Lanzhou 730000
- People's Republic of China
| | - Jianan Li
- Key Laboratory for Magnetism and Magnetic Materials of the Ministry of Education
- Lanzhou University
- Lanzhou 730000
- People's Republic of China
| | - Xicheng Wang
- Key Laboratory of Special Function Materials and Structure Design
- Ministry of Education
- Lanzhou University
- Lanzhou 730000
- People's Republic of China
| | - Xiaohong Cheng
- Key Laboratory for Magnetism and Magnetic Materials of the Ministry of Education
- Lanzhou University
- Lanzhou 730000
- People's Republic of China
| | - Zhenkun Wang
- Key Laboratory for Magnetism and Magnetic Materials of the Ministry of Education
- Lanzhou University
- Lanzhou 730000
- People's Republic of China
| | - Jianbo Wang
- Key Laboratory for Magnetism and Magnetic Materials of the Ministry of Education
- Lanzhou University
- Lanzhou 730000
- People's Republic of China
- Key Laboratory of Special Function Materials and Structure Design
| | - Qingfang Liu
- Key Laboratory for Magnetism and Magnetic Materials of the Ministry of Education
- Lanzhou University
- Lanzhou 730000
- People's Republic of China
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13
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Bu T, Zako T, Zeltner M, Sörgjerd KM, Schumacher CM, Hofer CJ, Stark WJ, Maeda M. Adsorption and separation of amyloid beta aggregates using ferromagnetic nanoparticles coated with charged polymer brushes. J Mater Chem B 2015; 3:3351-3357. [DOI: 10.1039/c4tb02029d] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Adsorption and separation of toxic Aβ aggregates (fibrils and oligomers) using ferromagnetic nanoparticles functionalized with a cationic polymer (C/Co@polyMAPTAC) was demonstrated.
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Affiliation(s)
- Tong Bu
- Department of Advanced Materials Science
- School of Frontier Sciences
- The University of Tokyo
- Kashiwa, Japan
- Bioengineering Laboratory
| | - Tamotsu Zako
- Bioengineering Laboratory
- RIKEN Institute
- Saitama 351-0198, Japan
| | - Martin Zeltner
- Institute for Chemical and Bioengineering
- CH-8093 Zurich, Switzerland
| | | | | | - Corinne J. Hofer
- Institute for Chemical and Bioengineering
- CH-8093 Zurich, Switzerland
| | - Wendelin J. Stark
- Institute for Chemical and Bioengineering
- CH-8093 Zurich, Switzerland
| | - Mizuo Maeda
- Department of Advanced Materials Science
- School of Frontier Sciences
- The University of Tokyo
- Kashiwa, Japan
- Bioengineering Laboratory
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14
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Wang D, Zheng Y, Chai Y, Yuan Y, Yuan R. Target protein induced cleavage of a specific peptide for prostate-specific antigen detection with positively charged gold nanoparticles as signal enhancer. Chem Commun (Camb) 2015; 51:10521-3. [DOI: 10.1039/c5cc02148k] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
A “signal-on” electrochemical biosensor based on target protein induced cleavage of a specific peptide with positively charged gold nanoparticles (AuNPs) as signal enhancer was developed to determine prostate-specific antigen (PSA).
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Affiliation(s)
- Ding Wang
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University)
- Ministry of Education
- College of Chemistry and Chemical Engineering
- Southwest University
- Chongqing 400715
| | - Yingning Zheng
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University)
- Ministry of Education
- College of Chemistry and Chemical Engineering
- Southwest University
- Chongqing 400715
| | - Yaqin Chai
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University)
- Ministry of Education
- College of Chemistry and Chemical Engineering
- Southwest University
- Chongqing 400715
| | - Yali Yuan
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University)
- Ministry of Education
- College of Chemistry and Chemical Engineering
- Southwest University
- Chongqing 400715
| | - Ruo Yuan
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University)
- Ministry of Education
- College of Chemistry and Chemical Engineering
- Southwest University
- Chongqing 400715
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