1
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Megahed S, Wutke N, Liu Y, Klapper M, Schulz F, Feliu N, Parak WJ. Encapsulation of Nanoparticles with Statistical Copolymers with Different Surface Charges and Analysis of Their Interactions with Proteins and Cells. Int J Mol Sci 2024; 25:5539. [PMID: 38791579 DOI: 10.3390/ijms25105539] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2024] [Revised: 05/03/2024] [Accepted: 05/16/2024] [Indexed: 05/26/2024] Open
Abstract
Encapsulation with polymers is a well-known strategy to stabilize and functionalize nanomaterials and tune their physicochemical properties. Amphiphilic copolymers are promising in this context, but their structural diversity and complexity also make understanding and predicting their behavior challenging. This is particularly the case in complex media which are relevant for intended applications in medicine and nanobiotechnology. Here, we studied the encapsulation of gold nanoparticles and quantum dots with amphiphilic copolymers differing in their charge and molecular structure. Protein adsorption to the nanoconjugates was studied with fluorescence correlation spectroscopy, and their surface activity was studied with dynamic interfacial tensiometry. Encapsulation of the nanoparticles without affecting their characteristic properties was possible with all tested polymers and provided good stabilization. However, the interaction with proteins and cells significantly depended on structural details. We identified statistical copolymers providing strongly reduced protein adsorption and low unspecific cellular uptake. Interestingly, different zwitterionic amphiphilic copolymers showed substantial differences in their resulting bio-repulsive properties. Among the polymers tested herein, statistical copolymers with sulfobetaine and phosphatidylcholine sidechains performed better than copolymers with carboxylic acid- and dimethylamino-terminated sidechains.
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Affiliation(s)
- Saad Megahed
- Fachbereich Physik, Universität Hamburg, Luruper Chaussee 149, 22761 Hamburg, Germany
- Physics Department, Faculty of Science, Al-Azhar University, Cairo 11884, Egypt
| | - Nicole Wutke
- Max Planck Institute für Polymerforschung, 55128 Mainz, Germany
| | - Yang Liu
- Fachbereich Physik, Universität Hamburg, Luruper Chaussee 149, 22761 Hamburg, Germany
| | - Markus Klapper
- Max Planck Institute für Polymerforschung, 55128 Mainz, Germany
| | - Florian Schulz
- Fachbereich Physik, Universität Hamburg, Luruper Chaussee 149, 22761 Hamburg, Germany
| | - Neus Feliu
- Zentrum für Angewandte Nanotechnologie CAN, Fraunhofer-Institut für Angewandte Polymerforschung IAP, 20146 Hamburg, Germany
| | - Wolfgang J Parak
- Fachbereich Physik, Universität Hamburg, Luruper Chaussee 149, 22761 Hamburg, Germany
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2
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Schulz F, Hühn J, Werner M, Hühn D, Kvelstad J, Koert U, Wutke N, Klapper M, Fröba M, Baulin V, Parak WJ. Local Environments Created by the Ligand Coating of Nanoparticles and Their Implications for Sensing and Surface Reactions. Acc Chem Res 2023; 56:2278-2285. [PMID: 37607332 PMCID: PMC10552541 DOI: 10.1021/acs.accounts.3c00139] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Indexed: 08/24/2023]
Abstract
ConspectusThe ligand shells of colloidal nanoparticles (NPs) can serve different purposes. In general, they provide colloidal stability by introducing steric repulsion between NPs. In the context of biological applications, the ligand shell plays a critical role in targeting, enabling NPs to achieve specific biodistributions. However, there is also another important feature of the ligand shell of NPs, namely, the creation of a local environment differing from the bulk of the solvent in which the NPs are dispersed. It is known that charged ligand shells can attract or repel ions and change the effective charge of a NP through Debye-Hückel screening. Positively charged ions, such as H+ (or H3O+) are attracted to negatively charged surfaces, whereas negatively charged ions, such as Cl- are repelled. The distribution of the ions around charged NP surfaces is a radial function of distance from the center of the NP, which is governed by a balance of electrostatic forces and entropy of ions and ligands. As a result, the ion concentration at the NP surface is different from its bulk equilibrium concentration, i.e., the charged ligand shell around the NPs has formed a distinct local environment. This not only applies to charged ligand shells but also follows a more general principle of induced condensation and depletion. Polar/apolar ligand shells, for example, result in a locally increased concentration of polar/apolar molecules. Similar effects can be seen for biocatalysts like enzymes immobilized in nanoporous host structures, which provide a special environment due to their surface chemistry and geometrical nanoconfinement. The formation of a local environment close to the ligand shell of NPs has profound implications for NP sensing applications. As a result, analyte concentrations close to the ligand shell, which are the ones that are measured, may be very different from the analyte concentrations in bulk. Based on previous work describing this effect, it will be discussed herein how such local environments, created by the choice of used ligands, may allow for tailoring the NPs' sensing properties. In general, the ligand shell around NPs can be attractive/repulsive for molecules with distinct properties and thus forms an environment that can modulate the specific response. Such local environments can also be optimized to modulate chemical reactions close to the NP surface (for example, by size filtering within pores) or to attract specific low abundance proteins. The importance hereby is that this is based on interaction with low selectivity between the ligands and the target molecules.
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Affiliation(s)
- Florian Schulz
- Fachbereich
Physik, Universität Hamburg, 22607 Hamburg, Germany
| | - Jonas Hühn
- Fachbereich
Physik, Philipps Universität Marburg, 35037 Marburg, Germany
| | - Marco Werner
- Leibniz-Institut
fur Polymerforschung Dresden e.V., 01069 Dresden, Germany
| | - Dominik Hühn
- Fachbereich
Physik, Philipps Universität Marburg, 35037 Marburg, Germany
| | - Julia Kvelstad
- Fachbereich
Chemie, Philipps Universität Marburg, 35043 Marburg, Germany
| | - Ulrich Koert
- Fachbereich
Chemie, Philipps Universität Marburg, 35043 Marburg, Germany
| | - Nicole Wutke
- Max Planck
Institute für Polymerforschung, 55128 Mainz, Germany
| | - Markus Klapper
- Max Planck
Institute für Polymerforschung, 55128 Mainz, Germany
| | - Michael Fröba
- Fachbereich
Chemie, Universität Hamburg, 20146 Hamburg, Germany
| | - Vladimir Baulin
- Departament
Quimica Fisica i Inorganica, Universitat
Rovira i Virgili, 43007 Tarragona, Spain
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3
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Valdeperez D, Wutke N, Ackermann LM, Parak WJ, Klapper M, Pelaz B. Colloidal stability of polymer coated zwitterionic Au nanoparticles in biological media. Inorganica Chim Acta 2022. [DOI: 10.1016/j.ica.2022.120820] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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4
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Hejazi-Dehaghani ZA, Arabi H, Thalheim D, Vidakovic D, Nekoomanesh Haghighi M, Veith L, Klapper M. Organic Versus Inorganic Supports for Metallocenes: The Influence of Rigidity on the Homogeneity of the Polyolefin Microstructure and Properties. Macromolecules 2021. [DOI: 10.1021/acs.macromol.0c01920] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Zahra-Alsadat Hejazi-Dehaghani
- Max Planck Institute for Polymer Research, Mainz 55128, Germany
- Iran Polymer and Petrochemical Institute, Tehran 1497713115, Iran
| | - Hassan Arabi
- Iran Polymer and Petrochemical Institute, Tehran 1497713115, Iran
| | - Daniel Thalheim
- Max Planck Institute for Polymer Research, Mainz 55128, Germany
| | | | | | - Lothar Veith
- Max Planck Institute for Polymer Research, Mainz 55128, Germany
| | - Markus Klapper
- Max Planck Institute for Polymer Research, Mainz 55128, Germany
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5
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Affiliation(s)
| | - Manfred Wagner
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
| | - Markus Klapper
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
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6
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Klapper M, Karagöz F, Parekh SH, Dorresteijn R, Müllen K. Session 4: Cell-Material Interaction. ACTA ACUST UNITED AC 2019; 64:30-35. [PMID: 30753142 DOI: 10.1515/bmt-2019-7004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Affiliation(s)
- M Klapper
- Max-Planck Institute for Polymer Research,Mainz, Germany
| | - F Karagöz
- Max-Planck Institute for Polymer Research,Mainz, Germany
| | - S H Parekh
- Max-Planck Institute for Polymer Research,Mainz, Germany
| | - R Dorresteijn
- Max-Planck Institute for Polymer Research,Mainz, Germany
| | - K Müllen
- Max-Planck Institute for Polymer Research,Mainz, Germany
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7
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Lin W, Nietzel S, Klapper M, Müllen K, Klein J. Normal and shear forces between surfaces bearing phosphocholinated polystyrene nanoparticles. POLYM ADVAN TECHNOL 2017. [DOI: 10.1002/pat.3859] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Weifeng Lin
- Department of Materials and Interfaces; Weizmann Institute of Science; Rehovot 76100 Israel
| | - Sven Nietzel
- Max Planck Institute for Polymer Research; Ackermannweg 10 D-55128 Mainz Germany
| | - Markus Klapper
- Max Planck Institute for Polymer Research; Ackermannweg 10 D-55128 Mainz Germany
| | - Klaus Müllen
- Max Planck Institute for Polymer Research; Ackermannweg 10 D-55128 Mainz Germany
| | - Jacob Klein
- Department of Materials and Interfaces; Weizmann Institute of Science; Rehovot 76100 Israel
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8
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Pipertzis A, Zardalidis G, Wunderlich K, Klapper M, Müllen K, Floudas G. Ionic Conduction in Poly(ethylene glycol)-Functionalized Hexa-peri-hexabenzocoronene Amphiphiles. Macromolecules 2017. [DOI: 10.1021/acs.macromol.7b00224] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Achilleas Pipertzis
- Department
of Physics, University of Ioannina, P.O. Box 1186, 451 10 Ioannina, Greece
| | - George Zardalidis
- Department
of Physics, University of Ioannina, P.O. Box 1186, 451 10 Ioannina, Greece
| | | | - Markus Klapper
- Max Planck Institute
for Polymer Research, 55128 Mainz, Germany
| | - Klaus Müllen
- Max Planck Institute
for Polymer Research, 55128 Mainz, Germany
| | - George Floudas
- Department
of Physics, University of Ioannina, P.O. Box 1186, 451 10 Ioannina, Greece
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9
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Ambrosone A, Roopin M, Pelaz B, Abdelmonem AM, Ackermann LM, Mattera L, Allocca M, Tino A, Klapper M, Parak WJ, Levy O, Tortiglione C. Dissecting common and divergent molecular pathways elicited by CdSe/ZnS quantum dots in freshwater and marine sentinel invertebrates. Nanotoxicology 2017; 11:289-303. [DOI: 10.1080/17435390.2017.1295111] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Alfredo Ambrosone
- Istituto di Scienze Applicate e Sistemi Intelligenti “E. Caianiello”, Consiglio Nazionale delle Ricerche, Pozzuoli, Italy
| | - Modi Roopin
- The Mina and Everard Goodman Faculty of Life Sciences, Bar Ilan University, Ramat Gan, Israel
| | - Beatriz Pelaz
- Fachbereich Physik, Philipps Universität Marburg, Marburg, Germany
| | | | | | - Lucia Mattera
- Istituto di Scienze Applicate e Sistemi Intelligenti “E. Caianiello”, Consiglio Nazionale delle Ricerche, Pozzuoli, Italy
| | - Mariateresa Allocca
- Istituto di Scienze Applicate e Sistemi Intelligenti “E. Caianiello”, Consiglio Nazionale delle Ricerche, Pozzuoli, Italy
| | - Angela Tino
- Istituto di Scienze Applicate e Sistemi Intelligenti “E. Caianiello”, Consiglio Nazionale delle Ricerche, Pozzuoli, Italy
| | - Markus Klapper
- Max Planck Institute for Polymer Research, Mainz, Germany
| | - Wolfgang J. Parak
- Fachbereich Physik, Philipps Universität Marburg, Marburg, Germany
- CIC biomaGUNE, Donostia-San Sebastián, Spain
| | - Oren Levy
- The Mina and Everard Goodman Faculty of Life Sciences, Bar Ilan University, Ramat Gan, Israel
| | - Claudia Tortiglione
- Istituto di Scienze Applicate e Sistemi Intelligenti “E. Caianiello”, Consiglio Nazionale delle Ricerche, Pozzuoli, Italy
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Becker G, Ackermann LM, Schechtel E, Klapper M, Tremel W, Wurm FR. Joining Two Natural Motifs: Catechol-Containing Poly(phosphoester)s. Biomacromolecules 2017; 18:767-777. [PMID: 28140560 DOI: 10.1021/acs.biomac.6b01613] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Numerous catechol-containing polymers, including biodegradable polymers, are currently heavily discussed for modern biomaterials. However, there is no report combining poly(phosphoester)s (PPEs) with catechols. Adhesive PPEs have been prepared via acyclic diene metathesis polymerization. A novel acetal-protected catechol phosphate monomer was homo- and copolymerized with phosphoester comonomers with molecular weights up to 42000 g/mol. Quantitative release of the catechols was achieved by careful hydrolysis of the acetal groups without backbone degradation. Degradation of the PPEs under basic conditions revealed complete and statistical degradation of the phosphotri- to phosphodiesters. In addition, a phosphodiester monomer with an adhesive P-OH group and no protective group chemistry was used to compare the binding to metal oxides with the multicatechol-PPEs. All PPEs can stabilize magnetite particles (NPs) in polar solvents, for example, methanol, due to the binding of the phosphoester groups in the backbone to the particles. ITC measurements reveal that multicatechol PPEs exhibit a higher binding affinity to magnetite NPs compared to PPEs bearing phosphodi- or phosphotriesters as repeating units. In addition, the catechol-containing PPEs were used to generate organo- and hydrogels by oxidative cross-linking, due to cohesive properties of catechol groups. This unique combination of two natural adhesive motives, catechols and phosphates, will allow the design of novel future gels for tissue engineering applications or novel degradable adhesives.
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Affiliation(s)
- Greta Becker
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany.,Graduate School Materials Science in Mainz, Staudinger Weg 9, 55128 Mainz, Germany
| | - Lisa-Maria Ackermann
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
| | - Eugen Schechtel
- Johannes Gutenberg-University Mainz , Institute of Inorganic Chemistry and Analytical Chemistry, Duesbergweg 10-14, 55128 Mainz, Germany.,Graduate School Materials Science in Mainz, Staudinger Weg 9, 55128 Mainz, Germany
| | - Markus Klapper
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
| | - Wolfgang Tremel
- Johannes Gutenberg-University Mainz , Institute of Inorganic Chemistry and Analytical Chemistry, Duesbergweg 10-14, 55128 Mainz, Germany
| | - Frederik R Wurm
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
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11
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Greven AC, Merk T, Karagöz F, Mohr K, Klapper M, Jovanović B, Palić D. Polycarbonate and polystyrene nanoplastic particles act as stressors to the innate immune system of fathead minnow (Pimephales promelas). Environ Toxicol Chem 2016; 35:3093-3100. [PMID: 27207313 DOI: 10.1002/etc.3501] [Citation(s) in RCA: 186] [Impact Index Per Article: 23.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/11/2015] [Revised: 03/01/2016] [Accepted: 05/16/2016] [Indexed: 06/05/2023]
Abstract
Water pollution with large-scale and small-scale plastic litter is an area of growing concern. Macro-plastic litter is a well-known threat to aquatic wildlife; however, the effects of micro-sized and nano-sized plastic particles on the health of organisms are not well understood. Small-scale plastic particles can easily be ingested by various aquatic organisms and potentially interfere with their immune system; therefore, the authors used a freshwater fish species as a model organism for nanoplastic exposure. Characterization of polystyrene (41.0 nm) and polycarbonate (158.7 nm) nanoplastic particles (PSNPs and PCNPs, respectively) in plasma was performed, and the effects of PSNPs and PCNPs on the innate immune system of fathead minnow were investigated. In vitro effects of PSNPs and PCNPs on neutrophil function were determined using a battery of neutrophil function assays. Exposure of neutrophils to PSNPs or PCNPs caused significant increases in degranulation of primary granules and neutrophil extracellular trap release compared to a nontreated control, whereas oxidative burst was less affected. The present study outlines the stress response of the cellular component of fish innate immune system to polystyrene and polycarbonate nanoparticles/aggregates and indicates their potential to interfere with disease resistance in fish populations. Environ Toxicol Chem 2016;35:3093-3100. © 2016 SETAC.
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Affiliation(s)
- Anne-Catherine Greven
- Chair for Fish Diseases and Fisheries Biology, Ludwig Maximilian University Munich, Munich, Germany
| | - Teresa Merk
- Chair for Fish Diseases and Fisheries Biology, Ludwig Maximilian University Munich, Munich, Germany
| | - Filiz Karagöz
- Max-Planck-Institut for Polymer Research, Mainz, Germany
| | - Kristin Mohr
- Max-Planck-Institut for Polymer Research, Mainz, Germany
| | - Markus Klapper
- Max-Planck-Institut for Polymer Research, Mainz, Germany
| | - Boris Jovanović
- Chair for Fish Diseases and Fisheries Biology, Ludwig Maximilian University Munich, Munich, Germany
| | - Dušan Palić
- Chair for Fish Diseases and Fisheries Biology, Ludwig Maximilian University Munich, Munich, Germany
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12
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Freudensprung I, Joe D, Nietzel S, Vollmer D, Klapper M, Müllen K. Spherical Polyolefin Particles from Olefin Polymerization in the Confined Geometry of Porous Hollow Silica Particles. Macromol Rapid Commun 2016; 37:1651-1656. [PMID: 27552924 DOI: 10.1002/marc.201600295] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2016] [Revised: 06/30/2016] [Indexed: 11/10/2022]
Abstract
Porous hollow silica particles (HSPs) are presented as new templates to control the product morphology in metallocene-catalyzed olefin polymerization. By selectively immobilizing catalysts inside the micrometer-sized porous hollow silica particles, the high hydraulic forces resulting from polymer growth within the confined geometries of the HSPs cause its supporting shell to break up from the inside. As the shape of the support is replicated during olefin polymerization, perfectly spherical product particles with very narrow size distribution can be achieved by using HSPs exhibiting a monomodal size distribution. Furthermore, the size of the obtained product particles can be controlled not only by the polymerization time but also by the size of the support material.
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Affiliation(s)
- Ines Freudensprung
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128, Mainz, Germany
| | - Daejune Joe
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128, Mainz, Germany
| | - Sven Nietzel
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128, Mainz, Germany
| | - Doris Vollmer
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128, Mainz, Germany
| | - Markus Klapper
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128, Mainz, Germany.
| | - Klaus Müllen
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128, Mainz, Germany
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13
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Freudensprung I, Joe D, Nietzel S, Vollmer D, Klapper M, Müllen K. Macromol. Rapid Commun. 20/2016. Macromol Rapid Commun 2016. [DOI: 10.1002/marc.201670078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Ines Freudensprung
- Max Planck Institute for Polymer Research; Ackermannweg 10 55128 Mainz Germany
| | - Daejune Joe
- Max Planck Institute for Polymer Research; Ackermannweg 10 55128 Mainz Germany
| | - Sven Nietzel
- Max Planck Institute for Polymer Research; Ackermannweg 10 55128 Mainz Germany
| | - Doris Vollmer
- Max Planck Institute for Polymer Research; Ackermannweg 10 55128 Mainz Germany
| | - Markus Klapper
- Max Planck Institute for Polymer Research; Ackermannweg 10 55128 Mainz Germany
| | - Klaus Müllen
- Max Planck Institute for Polymer Research; Ackermannweg 10 55128 Mainz Germany
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Manshian BB, Abdelmonem AM, Kantner K, Pelaz B, Klapper M, Nardi Tironi C, Parak WJ, Himmelreich U, Soenen SJ. Evaluation of quantum dot cytotoxicity: interpretation of nanoparticle concentrations versus intracellular nanoparticle numbers. Nanotoxicology 2016; 10:1318-28. [DOI: 10.1080/17435390.2016.1210691] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Bella B. Manshian
- Department of Imaging and Pathology, Biomedical NMR Unit/MoSAIC, KU Leuven Campus Gasthuisberg, Leuven, Belgium,
| | | | - Karsten Kantner
- Department of Physics, Philipps University of Marburg, Marburg, Germany,
| | - Beatriz Pelaz
- Department of Physics, Philipps University of Marburg, Marburg, Germany,
| | - Markus Klapper
- Max Planck Institute for Polymer Research, Mainz, Germany, and
| | | | - Wolfgang J. Parak
- Department of Physics, Philipps University of Marburg, Marburg, Germany,
- CIC biomaGUNE, San Sebastián, Spain
| | - Uwe Himmelreich
- Department of Imaging and Pathology, Biomedical NMR Unit/MoSAIC, KU Leuven Campus Gasthuisberg, Leuven, Belgium,
| | - Stefaan J. Soenen
- Department of Imaging and Pathology, Biomedical NMR Unit/MoSAIC, KU Leuven Campus Gasthuisberg, Leuven, Belgium,
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15
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Marakis J, Wunderlich K, Klapper M, Vlassopoulos D, Fytas G, Müllen K. Strong Physical Hydrogels from Fibrillar Supramolecular Assemblies of Poly(ethylene glycol) Functionalized Hexaphenylbenzenes. Macromolecules 2016. [DOI: 10.1021/acs.macromol.6b00528] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- J. Marakis
- FORTH, Institute of Electronic Structure & Laser, N. Plastira 100, 70013, Heraklion, Greece
- Department of Materials Science & Technology, University of Crete, P.O. Box 2208, 71003 Heraklion, Greece
| | - K. Wunderlich
- Max Planck
Institute
for Polymer Research, Ackermannweg
10, 55128, Mainz, Germany
| | - M. Klapper
- Max Planck
Institute
for Polymer Research, Ackermannweg
10, 55128, Mainz, Germany
| | - D. Vlassopoulos
- FORTH, Institute of Electronic Structure & Laser, N. Plastira 100, 70013, Heraklion, Greece
- Department of Materials Science & Technology, University of Crete, P.O. Box 2208, 71003 Heraklion, Greece
| | - G. Fytas
- FORTH, Institute of Electronic Structure & Laser, N. Plastira 100, 70013, Heraklion, Greece
- Department of Materials Science & Technology, University of Crete, P.O. Box 2208, 71003 Heraklion, Greece
- Max Planck
Institute
for Polymer Research, Ackermannweg
10, 55128, Mainz, Germany
| | - K. Müllen
- Max Planck
Institute
for Polymer Research, Ackermannweg
10, 55128, Mainz, Germany
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Xiong Y, Chen Z, Wang H, Ackermann LM, Klapper M, Butt HJ, Wu S. An autonomic self-healing organogel with a photo-mediated modulus. Chem Commun (Camb) 2016; 52:14157-14160. [DOI: 10.1039/c6cc08513j] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
A new method is described for fabricating autonomic, self-healing, deformable organogels.
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Affiliation(s)
- Yubing Xiong
- Max Planck Institute for Polymer Research
- Mainz 55128
- Germany
- Key Laboratory of Eco-Environment-Related Polymer Materials
- Ministry of Education; College of Chemistry and Chemical Engineering
| | - Zhijun Chen
- Max Planck Institute for Polymer Research
- Mainz 55128
- Germany
| | - Hong Wang
- Physical Science and Engineering Division
- King Abdullah University of Science & Technology (KAUST)
- Thuwal
- Saudi Arabia
| | | | - Markus Klapper
- Max Planck Institute for Polymer Research
- Mainz 55128
- Germany
| | | | - Si Wu
- Max Planck Institute for Polymer Research
- Mainz 55128
- Germany
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17
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Freudensprung I, Klapper M, Müllen K. Triblock Terpolymers by Simultaneous Tandem Block Polymerization (STBP). Macromol Rapid Commun 2015; 37:209-14. [DOI: 10.1002/marc.201500568] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2015] [Revised: 11/05/2015] [Indexed: 11/11/2022]
Affiliation(s)
- Ines Freudensprung
- Max Planck Institute for Polymer Research; Ackermannweg 10 55128 Mainz Germany
| | - Markus Klapper
- Max Planck Institute for Polymer Research; Ackermannweg 10 55128 Mainz Germany
| | - Klaus Müllen
- Max Planck Institute for Polymer Research; Ackermannweg 10 55128 Mainz Germany
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18
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Tironi CN, Graf R, Lieberwirth I, Klapper M, Müllen K. Synthesis and Selective Loading of Polyhydroxyethyl Methacrylate- l-Polysulfone Amphiphilic Polymer Conetworks. ACS Macro Lett 2015; 4:1302-1306. [PMID: 35614833 DOI: 10.1021/acsmacrolett.5b00714] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
Abstract
Polyhydroxyethyl methacrylate-linked by-polysulfone amphiphilic polymer conetworks of two types of segments with Tg above room temperature are presented. The conetworks are prepared by free radical copolymerization of methacryloyl-terminated PSU macromers with 2-ethyl methacrylate, followed by removal of the TMS protecting groups by acidic hydrolysis. Phase separation in the nanometer range due to the immiscibility of the two covalently linked segments is observed using transmission electron and scanning force microscopy. The swelling of the conetworks in water and methanol as polar solvents and chloroform as nonpolar solvent are studied gravimetrically and then in a more detailed fashion by solid-state NMR spectroscopy. Selective swelling and also targeted loading of a small organic model compound specifically to one of the two phases are demonstrated.
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Affiliation(s)
- Catarina Nardi Tironi
- Max Planck Institute
for Polymer Research, Ackermannweg
10, 55128 Mainz, Germany
- Graduate
School Material Science in Mainz, University of Mainz, Staudingerweg
9, 55128 Mainz,Germany
| | - Robert Graf
- Max Planck Institute
for Polymer Research, Ackermannweg
10, 55128 Mainz, Germany
| | - Ingo Lieberwirth
- Max Planck Institute
for Polymer Research, Ackermannweg
10, 55128 Mainz, Germany
| | - Markus Klapper
- Max Planck Institute
for Polymer Research, Ackermannweg
10, 55128 Mainz, Germany
| | - Klaus Müllen
- Max Planck Institute
for Polymer Research, Ackermannweg
10, 55128 Mainz, Germany
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19
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Schellenberger F, Xie J, Encinas N, Hardy A, Klapper M, Papadopoulos P, Butt HJ, Vollmer D. Direct observation of drops on slippery lubricant-infused surfaces. Soft Matter 2015; 11:7617-26. [PMID: 26291621 DOI: 10.1039/c5sm01809a] [Citation(s) in RCA: 187] [Impact Index Per Article: 20.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Water droplet resting on a slippery surface.
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Affiliation(s)
| | - Jing Xie
- Max Planck Institute for Polymer Research
- 55128 Mainz, Germany
| | - Noemí Encinas
- Max Planck Institute for Polymer Research
- 55128 Mainz, Germany
| | - Alexandre Hardy
- Max Planck Institute for Polymer Research
- 55128 Mainz, Germany
| | - Markus Klapper
- Max Planck Institute for Polymer Research
- 55128 Mainz, Germany
| | | | | | - Doris Vollmer
- Max Planck Institute for Polymer Research
- 55128 Mainz, Germany
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20
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Nietzel S, Joe D, Krumpfer JW, Schellenberger F, Alsaygh AA, Fink G, Klapper M, Müllen K. Organic nanoparticles as fragmentable support for Ziegler-Natta catalysts. ACTA ACUST UNITED AC 2014. [DOI: 10.1002/pola.27442] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Sven Nietzel
- Max Planck Institute for Polymer Research; Ackermannweg 10 55128 Mainz Germany
| | - Daejune Joe
- Max Planck Institute for Polymer Research; Ackermannweg 10 55128 Mainz Germany
| | - Joseph W. Krumpfer
- Max Planck Institute for Polymer Research; Ackermannweg 10 55128 Mainz Germany
| | | | - Abdulhamid A. Alsaygh
- King Abdulaziz City for Science and Technology; P.O. Box 6086 Riyadh 11442 Saudi Arabia
| | - Gerhard Fink
- Max Planck Institute for Coal Research; Kaiser-Wilhelm-Platz 1 45470 Mülheim an der Ruhr Germany
| | - Markus Klapper
- Max Planck Institute for Polymer Research; Ackermannweg 10 55128 Mainz Germany
| | - Klaus Müllen
- Max Planck Institute for Polymer Research; Ackermannweg 10 55128 Mainz Germany
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21
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Schuster T, Golling FE, Krumpfer JW, Wagner M, Graf R, Alsaygh AA, Klapper M, Müllen K. Poly(isobutylene) Nanoparticles via Cationic Polymerization in Nonaqueous Emulsions. Macromol Rapid Commun 2014; 36:204-10. [DOI: 10.1002/marc.201400401] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2014] [Revised: 08/12/2014] [Indexed: 11/07/2022]
Affiliation(s)
- Thomas Schuster
- Max Planck Institute for Polymer Research; Ackermannweg 10 55128 Mainz Germany
| | - Florian E. Golling
- Max Planck Institute for Polymer Research; Ackermannweg 10 55128 Mainz Germany
| | - Joseph W. Krumpfer
- Max Planck Institute for Polymer Research; Ackermannweg 10 55128 Mainz Germany
| | - Manfred Wagner
- Max Planck Institute for Polymer Research; Ackermannweg 10 55128 Mainz Germany
| | - Robert Graf
- Max Planck Institute for Polymer Research; Ackermannweg 10 55128 Mainz Germany
| | - Abdulhamid A. Alsaygh
- King Abdulaziz City for Science and Technology (KACST); PO BOX 6086 Riyadh 11442 Saudi Arabia
| | - Markus Klapper
- Max Planck Institute for Polymer Research; Ackermannweg 10 55128 Mainz Germany
| | - Klaus Müllen
- Max Planck Institute for Polymer Research; Ackermannweg 10 55128 Mainz Germany
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22
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Dorresteijn R, Billecke N, Parekh SH, Klapper M, Müllen K. Polarity reversal of nanoparticle surfaces by the use of light-sensitive polymeric emulsifiers. ACTA ACUST UNITED AC 2014. [DOI: 10.1002/pola.27363] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Robert Dorresteijn
- Max-Planck-Institut für Polymerforschung; Ackermannweg 10 55128 Mainz Germany
| | - Nils Billecke
- Max-Planck-Institut für Polymerforschung; Ackermannweg 10 55128 Mainz Germany
| | - Sapun H. Parekh
- Max-Planck-Institut für Polymerforschung; Ackermannweg 10 55128 Mainz Germany
| | - Markus Klapper
- Max-Planck-Institut für Polymerforschung; Ackermannweg 10 55128 Mainz Germany
| | - Klaus Müllen
- Max-Planck-Institut für Polymerforschung; Ackermannweg 10 55128 Mainz Germany
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23
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Wunderlich K, Grigoriadis C, Zardalidis G, Klapper M, Graf R, Butt HJ, Müllen K, Floudas G. Poly(ethylene glycol)-Functionalized Hexaphenylbenzenes as Unique Amphiphiles: Supramolecular Organization and Ion Conductivity. Macromolecules 2014. [DOI: 10.1021/ma501303k] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
| | | | - George Zardalidis
- Department
of Physics, University of Ioannina, 45110 Ioannina, Greece
| | - Markus Klapper
- Max-Planck Institute for Polymer Research, 55128 Mainz, Germany
| | - Robert Graf
- Max-Planck Institute for Polymer Research, 55128 Mainz, Germany
| | | | - Klaus Müllen
- Max-Planck Institute for Polymer Research, 55128 Mainz, Germany
| | - George Floudas
- Department
of Physics, University of Ioannina, 45110 Ioannina, Greece
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24
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Wunderlich K, Larsen A, Marakis J, Fytas G, Klapper M, Müllen K. Controlled hydrogel fiber formation: the unique case of hexaphenylbenzene-poly(ethylene glycol) amphiphiles. Small 2014; 10:1914-1919. [PMID: 24616350 DOI: 10.1002/smll.201302832] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/30/2013] [Revised: 12/06/2013] [Indexed: 06/03/2023]
Affiliation(s)
- Katrin Wunderlich
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128, Mainz, Germany
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25
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Pevzner L, Auer M, Trattnig R, Klapper M, List-Kratochvil EJW, Müllen K. Controlling Polymer Solubility: Polyfluorenes with Branched Semiperfluorinated Side Chains for Polymer Light-Emitting Diodes. Isr J Chem 2014. [DOI: 10.1002/ijch.201400014] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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26
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Wegener J, Kaltbeitzel A, Graf R, Klapper M, Müllen K. Proton conductivity in doped aluminum phosphonate sponges. ChemSusChem 2014; 7:1148-1154. [PMID: 24573985 DOI: 10.1002/cssc.201301055] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/01/2013] [Revised: 11/20/2013] [Indexed: 06/03/2023]
Abstract
Proton-conducting networks (NETs) were prepared successfully by the insertion of phosphonated nanochannels into organic-inorganic hybrid materials that contain Al(3+) as the connector and hexakis(p-phosphonatophenyl)benzene (HPB) as the linker. Noncomplexed phosphonic acid groups remain in the framework, which depends on the ratio of both compounds, to yield a proton conductivity in the region of 10(-3) S cm(-1). This conductivity can be further improved and values as high as Nafion, a benchmark proton-exchange membrane for fuel cell applications, can be obtained by filling the network pores with intrinsic proton conductors. As a result of their sponge-like morphology, aluminum phosphonates adsorb conductive small molecules such as phosphonic acids, which results in a very high proton conductivity of approximately 5 × 10(-2) S cm(-1) at 120 °C and 50 % relative humidity (RH). Contrary to Nafion, the doped networks show a remarkably low temperature dependence of proton conductivity from external humidification. This effect indicates a transport mechanism that is different to the water vehicle mechanism. Furthermore, the materials exhibit an activation energy of 40 kJ mol(-1) at 15 % RH that starts to diminish to 10 kJ mol(-1) at 80 % RH, which is even smaller than the corresponding values obtained for Nafion 117.
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Affiliation(s)
- Jennifer Wegener
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz (Germany), Fax: (+49) 6131-379-350
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27
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Stangenberg R, Saeed I, Kuan SL, Baumgarten M, Weil T, Klapper M, Müllen K. Macromol. Rapid Commun. 2/2014. Macromol Rapid Commun 2014. [DOI: 10.1002/marc.201470009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- René Stangenberg
- Max Planck Institute for Polymer Research; Ackermannweg 10 55128 Mainz Germany
| | - Irfan Saeed
- Max Planck Institute for Polymer Research; Ackermannweg 10 55128 Mainz Germany
| | - Seah Ling Kuan
- University of Ulm, Institute for Organic Chemistry III/Macromolecular Chemistry; Albert-Einstein-Allee 11 89081 Ulm Germany
| | - Martin Baumgarten
- Max Planck Institute for Polymer Research; Ackermannweg 10 55128 Mainz Germany
| | - Tanja Weil
- University of Ulm, Institute for Organic Chemistry III/Macromolecular Chemistry; Albert-Einstein-Allee 11 89081 Ulm Germany
| | - Markus Klapper
- Max Planck Institute for Polymer Research; Ackermannweg 10 55128 Mainz Germany
| | - Klaus Müllen
- Max Planck Institute for Polymer Research; Ackermannweg 10 55128 Mainz Germany
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28
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Moers C, Nuhn L, Wissel M, Stangenberg R, Mondeshki M, Berger-Nicoletti E, Thomas A, Schaeffel D, Koynov K, Klapper M, Zentel R, Frey H. Supramolecular Linear-g-Hyperbranched Graft Polymers: Topology and Binding Strength of Hyperbranched Side Chains. Macromolecules 2013. [DOI: 10.1021/ma402081h] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Christian Moers
- Institute
of Organic Chemistry, Johannes Gutenberg-University Mainz (JGU), Duesbergweg
10-14, D-55128 Mainz, Germany
- Graduate School Materials Science in Mainz (MAINZ), Staudinger Weg 9, D-55128 Mainz, Germany
| | - Lutz Nuhn
- Institute
of Organic Chemistry, Johannes Gutenberg-University Mainz (JGU), Duesbergweg
10-14, D-55128 Mainz, Germany
| | - Marcel Wissel
- Max Planck Institute for Polymer Research, Ackermannweg 10, D-55128 Mainz, Germany
| | - René Stangenberg
- Max Planck Institute for Polymer Research, Ackermannweg 10, D-55128 Mainz, Germany
| | - Mihail Mondeshki
- Institute
of Inorganic Chemistry and Analytical Chemistry, Johannes Gutenberg-University Mainz (JGU), Duesbergweg 10-14, D-55128 Mainz, Germany
| | - Elena Berger-Nicoletti
- Institute
of Organic Chemistry, Johannes Gutenberg-University Mainz (JGU), Duesbergweg
10-14, D-55128 Mainz, Germany
| | - Anja Thomas
- Institute
of Organic Chemistry, Johannes Gutenberg-University Mainz (JGU), Duesbergweg
10-14, D-55128 Mainz, Germany
| | - David Schaeffel
- Max Planck Institute for Polymer Research, Ackermannweg 10, D-55128 Mainz, Germany
| | - Kaloian Koynov
- Max Planck Institute for Polymer Research, Ackermannweg 10, D-55128 Mainz, Germany
| | - Markus Klapper
- Max Planck Institute for Polymer Research, Ackermannweg 10, D-55128 Mainz, Germany
| | - Rudolf Zentel
- Institute
of Organic Chemistry, Johannes Gutenberg-University Mainz (JGU), Duesbergweg
10-14, D-55128 Mainz, Germany
| | - Holger Frey
- Institute
of Organic Chemistry, Johannes Gutenberg-University Mainz (JGU), Duesbergweg
10-14, D-55128 Mainz, Germany
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29
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Stangenberg R, Saeed I, Kuan SL, Baumgarten M, Weil T, Klapper M, Müllen K. Tuning polarity of polyphenylene dendrimers by patched surface amphiphilicity--precise control over size, shape, and polarity. Macromol Rapid Commun 2013; 35:152-160. [PMID: 24272967 DOI: 10.1002/marc.201300671] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2013] [Revised: 10/07/2013] [Indexed: 01/07/2023]
Abstract
In the ideal case, a precise synthesis yields molecules with a constitutional as well as a conformational perfectness. Such a case of precision is demonstrated by the synthesis of semi-rigid amphiphilic polyphenylene dendrimers (PPDs). Polar sulfonate groups are precisely placed on their periphery in such a manner that patches of polar and non-polar regions are created. Key structural features are the semi-rigid framework and shape-persistent nature of PPDs since the limited flexibility introduces a nano-phase-separated amphiphilic rim of the dendrimer. This results in both attractive and repulsive interactions with a given solvent. Frustrated solvent structures then lead to a remarkable solubility in solvents of different polarity such as toluene, methanol, and water or their mixtures. Water solubility combined with defined surface structuring and variable hydrophobicity of PPDs that resemble the delicate surface textures of proteins are important prerequisites for their biological and medical applications based upon cellular internalization.
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Affiliation(s)
- René Stangenberg
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128, Mainz, Germany
| | - Irfan Saeed
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128, Mainz, Germany
| | - Seah Ling Kuan
- University of Ulm, Institute for Organic Chemistry III/Macromolecular Chemistry, Albert-Einstein-Allee 11, 89081, Ulm, Germany
| | - Martin Baumgarten
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128, Mainz, Germany
| | - Tanja Weil
- University of Ulm, Institute for Organic Chemistry III/Macromolecular Chemistry, Albert-Einstein-Allee 11, 89081, Ulm, Germany
| | - Markus Klapper
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128, Mainz, Germany
| | - Klaus Müllen
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128, Mainz, Germany
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30
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31
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Deng X, Paven M, Papadopoulos P, Ye M, Wu S, Schuster T, Klapper M, Vollmer D, Butt HJ. Solvent-Free Synthesis of Microparticles on Superamphiphobic Surfaces. Angew Chem Int Ed Engl 2013; 52:11286-9. [DOI: 10.1002/anie.201302903] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2013] [Revised: 06/13/2013] [Indexed: 11/10/2022]
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32
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Deng X, Paven M, Papadopoulos P, Ye M, Wu S, Schuster T, Klapper M, Vollmer D, Butt HJ. Solvent-Free Synthesis of Microparticles on Superamphiphobic Surfaces. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201302903] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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33
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Angelova P, Vieker H, Weber NE, Matei D, Reimer O, Meier I, Kurasch S, Biskupek J, Lorbach D, Wunderlich K, Chen L, Terfort A, Klapper M, Müllen K, Kaiser U, Gölzhäuser A, Turchanin A. A universal scheme to convert aromatic molecular monolayers into functional carbon nanomembranes. ACS Nano 2013; 7:6489-6497. [PMID: 23802686 DOI: 10.1021/nn402652f] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Free-standing nanomembranes with molecular or atomic thickness are currently explored for separation technologies, electronics, and sensing. Their engineering with well-defined structural and functional properties is a challenge for materials research. Here we present a broadly applicable scheme to create mechanically stable carbon nanomembranes (CNMs) with a thickness of ~0.5 to ~3 nm. Monolayers of polyaromatic molecules (oligophenyls, hexaphenylbenzene, and polycyclic aromatic hydrocarbons) were assembled and exposed to electrons that cross-link them into CNMs; subsequent pyrolysis converts the CNMs into graphene sheets. In this transformation the thickness, porosity, and surface functionality of the nanomembranes are determined by the monolayers, and structural and functional features are passed on from the molecules through their monolayers to the CNMs and finally on to the graphene. Our procedure is scalable to large areas and allows the engineering of ultrathin nanomembranes by controlling the composition and structure of precursor molecules and their monolayers.
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Affiliation(s)
- Polina Angelova
- Faculty of Physics, University of Bielefeld, 33615 Bielefeld, Germany
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34
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Chiad K, Grill M, Baumgarten M, Klapper M, Müllen K. Guest Uptake by Rigid Polyphenylene Dendrimers Acting As a Unique Dendritic Box in Solution Proven by Isothermal Calorimetry. Macromolecules 2013. [DOI: 10.1021/ma3024848] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Khalid Chiad
- Max Planck Institute for Polymer Research, Ackermannweg
10, 55128 Mainz, Germany
| | - Matthias Grill
- Max Planck Institute for Polymer Research, Ackermannweg
10, 55128 Mainz, Germany
| | - Martin Baumgarten
- Max Planck Institute for Polymer Research, Ackermannweg
10, 55128 Mainz, Germany
| | - Markus Klapper
- Max Planck Institute for Polymer Research, Ackermannweg
10, 55128 Mainz, Germany
| | - Klaus Müllen
- Max Planck Institute for Polymer Research, Ackermannweg
10, 55128 Mainz, Germany
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35
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Hühn D, Kantner K, Geidel C, Brandholt S, De Cock I, Soenen SJH, Rivera Gil P, Montenegro JM, Braeckmans K, Müllen K, Nienhaus GU, Klapper M, Parak WJ. Polymer-coated nanoparticles interacting with proteins and cells: focusing on the sign of the net charge. ACS Nano 2013; 7:3253-63. [PMID: 23566380 DOI: 10.1021/nn3059295] [Citation(s) in RCA: 370] [Impact Index Per Article: 33.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
To study charge-dependent interactions of nanoparticles (NPs) with biological media and NP uptake by cells, colloidal gold nanoparticles were modified with amphiphilic polymers to obtain NPs with identical physical properties except for the sign of the charge (negative/positive). This strategy enabled us to solely assess the influence of charge on the interactions of the NPs with proteins and cells, without interference by other effects such as different size and colloidal stability. Our study shows that the number of adsorbed human serum albumin molecules per NP was not influenced by their surface charge. Positively charged NPs were incorporated by cells to a larger extent than negatively charged ones, both in serum-free and serum-containing media. Consequently, with and without protein corona (i.e., in serum-free medium) present, NP internalization depends on the sign of charge. The uptake rate of NPs by cells was higher for positively than for negatively charged NPs. Furthermore, cytotoxicity assays revealed a higher cytotoxicity for positively charged NPs, associated with their enhanced uptake.
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Affiliation(s)
- Dominik Hühn
- Department of Physics, Philipps-University Marburg, Marburg, Germany
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36
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Dorresteijn R, Ragg R, Rago G, Billecke N, Bonn M, Parekh SH, Battagliarin G, Peneva K, Wagner M, Klapper M, Müllen K. Biocompatible Polylactide-block-Polypeptide-block-Polylactide Nanocarrier. Biomacromolecules 2013; 14:1572-7. [DOI: 10.1021/bm400216r] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Robert Dorresteijn
- Max Planck Institute for Polymer Research,
Ackermannweg
10, 55128 Mainz, Germany
| | - Ruben Ragg
- Max Planck Institute for Polymer Research,
Ackermannweg
10, 55128 Mainz, Germany
| | - Gianluca Rago
- Max Planck Institute for Polymer Research,
Ackermannweg
10, 55128 Mainz, Germany
| | - Nils Billecke
- Max Planck Institute for Polymer Research,
Ackermannweg
10, 55128 Mainz, Germany
| | - Mischa Bonn
- Max Planck Institute for Polymer Research,
Ackermannweg
10, 55128 Mainz, Germany
| | - Sapun H. Parekh
- Max Planck Institute for Polymer Research,
Ackermannweg
10, 55128 Mainz, Germany
| | - Glauco Battagliarin
- Max Planck Institute for Polymer Research,
Ackermannweg
10, 55128 Mainz, Germany
| | - Kalina Peneva
- Max Planck Institute for Polymer Research,
Ackermannweg
10, 55128 Mainz, Germany
| | - Manfred Wagner
- Max Planck Institute for Polymer Research,
Ackermannweg
10, 55128 Mainz, Germany
| | - Markus Klapper
- Max Planck Institute for Polymer Research,
Ackermannweg
10, 55128 Mainz, Germany
| | - Klaus Müllen
- Max Planck Institute for Polymer Research,
Ackermannweg
10, 55128 Mainz, Germany
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37
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Markova D, Opper KL, Wagner M, Klapper M, Wagener KB, Müllen K. Synthesis of proton conducting phosphonic acid-functionalized polyolefins by the combination of ATRP and ADMET. Polym Chem 2013. [DOI: 10.1039/c2py20886e] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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38
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Dorresteijn R, Haschick R, Klapper M, Müllen K. Macromol. Chem. Phys. 19/2012. MACROMOL CHEM PHYS 2012. [DOI: 10.1002/macp.201290059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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39
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Dorresteijn R, Haschick R, Klapper M, Müllen K. Poly(L-lactide) Nanoparticles via Ring-Opening Polymerization in Non-aqueous Emulsion. MACROMOL CHEM PHYS 2012. [DOI: 10.1002/macp.201200345] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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40
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41
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Affiliation(s)
- Thorsten Brand
- a Max-Planck-Institut für Polymerforschung, Ackermannweg 10, 55128 Mainz, Germany
| | - Markus Klapper
- b Max-Planck-Institut für Polymerforschung, Ackermannweg 10, 55128 Mainz, Germany
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Rugen-Penkalla N, Klapper M, Müllen K. Highly Charged Conjugated Polymers with Polyphenylene Backbones and Poly(acrylic acid) Side Chains. Macromolecules 2012. [DOI: 10.1021/ma202209u] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | - Markus Klapper
- Max Planck Institute for Polymer Research, Ackermannweg 10, D-55128
Mainz, Germany
| | - Klaus Müllen
- Max Planck Institute for Polymer Research, Ackermannweg 10, D-55128
Mainz, Germany
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Kumar A, Pisula W, Markova D, Klapper M, Müllen K. Proton-Conducting Poly(phenylene oxide)-Poly(vinyl benzyl phosphonic acid) Block Copolymers via Atom Transfer Radical Polymerization. MACROMOL CHEM PHYS 2012. [DOI: 10.1002/macp.201100429] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Yin M, Kang N, Cui G, Liu Z, Wang F, Yang W, Klapper M, Müllen K. Synthesis, Electrochemical Properties and Self-Assembly of a Proton-Conducting Core-Shell Macromolecule. Chemistry 2012; 18:2239-43. [DOI: 10.1002/chem.201103649] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2011] [Indexed: 11/07/2022]
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Geidel C, Schmachtel S, Riedinger A, Pfeiffer C, Müllen K, Klapper M, Parak WJ. A general synthetic approach for obtaining cationic and anionic inorganic nanoparticles via encapsulation in amphiphilic copolymers. Small 2011; 7:2929-2934. [PMID: 21990195 DOI: 10.1002/smll.201100509] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/15/2011] [Revised: 04/24/2011] [Indexed: 05/31/2023]
Abstract
A series of amphiphilic copolymers with variable charge densities on their backbone is synthesized. Positively charged N,N,N-trimethylammonium-2-ethyl methacrylate iodide or negatively charged 2-(methacryloyloxy)ethylphosphonic acid and lauryl methacrylate are used as building blocks. When wrapped around hydrophobically capped inorganic nanoparticles (NPs), the latter are able to disperse in aqueous solutions. Using this method, positively as well as negatively charged colloidal NPs can be synthesized in a reliable way. The method presented herein allows the charge on the NPs to be adjusted to different negative and positive values by using polymers with a variable ratio of charged monomers and lauryl methacrylate. Virtually all kinds of hydrophobic inorganic NPs could be coated with these amphiphilic polymers. The coating procedure is demonstrated for Au particles as well as for CdSe/ZnS quantum dots. To date, wrapping amphiphilic polymers around NPs has led only to anionic NPs. The polymers synthesized in this work allow for positively charged NPs with a high colloidal stability.
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Affiliation(s)
- C Geidel
- Max Planck Institute for Polymer Research, Mainz, Germany
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Ludewig AH, Klapper M, Wabitsch M, Döring F, Nitz I. Differential expression of alternative Acyl-CoA binding protein (ACBP) transcripts in an inducible human preadipocyte cell line. Horm Metab Res 2011; 43:440-2. [PMID: 21448843 DOI: 10.1055/s-0031-1273768] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Understanding the function of fat metabolism during differentiation of human preadipocytes to fully developed fat tissue has been the aim of various studies in the past decades. Due to the lack of suitable human cell culture lines, experimental research predominantly focused on rodent models and nonhuman cell culture systems. Here, we demonstrate that a human preadipocyte cell line SGBS is well suited to examine differential expression of the Acyl-CoA binding protein (ACBP) during adipogenesis. The Acbp gene expresses various alternative high- and low-abundant transcript variants encoding ACBP protein isoforms, which play a central role in fat metabolism. Whereas the low-abundant transcript Acbp-1G is downregulated during SGBS adipogenesis, the high-abundant and well established transcripts Acbp-1A (1) and -1B are moderately (2-4-fold) upregulated. In contrast, the alternative high-abundant transcript Acbp-1C is strongly (29-fold) upregulated at mRNA and protein level indicating that particularly ACBP-1C functions in lipogenic processes during fat cell differentiation in humans.
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Affiliation(s)
- A H Ludewig
- Institute of Human Nutrition and Food Science, Research Group Molecular Prevention, University of Kiel, Kiel, Germany
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Stelzig SH, Menneking C, Hoffmann MS, Eisele K, Barcikowski S, Klapper M, Müllen K. Compatibilization of laser generated antibacterial Ag- and Cu-nanoparticles for perfluorinated implant materials. Eur Polym J 2011. [DOI: 10.1016/j.eurpolymj.2010.10.018] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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