1
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Eren EO, Esen C, Scoppola E, Song Z, Senokos E, Zschiesche H, Cruz D, Lauermann I, Tarakina NV, Kumru B, Antonietti M, Giusto P. Microporous Sulfur-Carbon Materials with Extended Sodium Storage Window. Adv Sci (Weinh) 2024; 11:e2310196. [PMID: 38350734 DOI: 10.1002/advs.202310196] [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] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/26/2023] [Indexed: 02/15/2024]
Abstract
Developing high-performance carbonaceous anode materials for sodium-ion batteries (SIBs) is still a grand quest for a more sustainable future of energy storage. Introducing sulfur within a carbon framework is one of the most promising attempts toward the development of highly efficient anode materials. Herein, a microporous sulfur-rich carbon anode obtained from a liquid sulfur-containing oligomer is introduced. The sodium storage mechanism shifts from surface-controlled to diffusion-controlled at higher synthesis temperatures. The different storage mechanisms and electrode performances are found to be independent of the bare electrode material's interplanar spacing. Therefore, these differences are attributed to an increased microporosity and a thiophene-rich chemical environment. The combination of these properties enables extending the plateau region to higher potential and achieving reversible overpotential sodium storage. Moreover, in-operando small-angle X-ray scattering (SAXS) reveals reversible electron density variations within the pore structure, in good agreement with the pore-filling sodium storage mechanism occurring in hard carbons (HCs). Eventually, the depicted framework will enable the design of high-performance anode materials for sodium-ion batteries with competitive energy density.
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Affiliation(s)
- Enis Oğuzhan Eren
- Department of Colloid Chemistry, Max Planck Institute of Colloids and Interfaces, 14476, Potsdam, Germany
| | - Cansu Esen
- Department of Colloid Chemistry, Max Planck Institute of Colloids and Interfaces, 14476, Potsdam, Germany
| | - Ernesto Scoppola
- Department of Biomaterials, Max Planck Institute of Colloids and Interfaces, 14476, Potsdam, Germany
| | - Zihan Song
- Department of Colloid Chemistry, Max Planck Institute of Colloids and Interfaces, 14476, Potsdam, Germany
| | - Evgeny Senokos
- Department of Colloid Chemistry, Max Planck Institute of Colloids and Interfaces, 14476, Potsdam, Germany
| | - Hannes Zschiesche
- Department of Colloid Chemistry, Max Planck Institute of Colloids and Interfaces, 14476, Potsdam, Germany
| | - Daniel Cruz
- Department of Inorganic Chemistry, Fritz-Haber-Institut der Max-Planck Gesellschaft, 14195, Berlin, Germany
- Department of Heterogeneous Reactions, Max Planck Institute for Chemical Energy Conversion, 45470, Mülheim an der Ruhr, Germany
| | - Iver Lauermann
- PVcomB, Helmholtz-Zentrum Berlin für Materialien und Energie, 12489, Berlin, Germany
| | - Nadezda V Tarakina
- Department of Colloid Chemistry, Max Planck Institute of Colloids and Interfaces, 14476, Potsdam, Germany
| | - Barış Kumru
- Department of Colloid Chemistry, Max Planck Institute of Colloids and Interfaces, 14476, Potsdam, Germany
- Aerospace Structures and Materials Department, Faculty of Aerospace Engineering, Delft University of Technology, Delft, 2629 HS, The Netherlands
| | - Markus Antonietti
- Department of Colloid Chemistry, Max Planck Institute of Colloids and Interfaces, 14476, Potsdam, Germany
| | - Paolo Giusto
- Department of Colloid Chemistry, Max Planck Institute of Colloids and Interfaces, 14476, Potsdam, Germany
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2
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Zemke F, Scoppola E, Simon U, Bekheet MF, Wagermaier W, Gurlo A. Springback effect of ambient-pressure-dried silica aerogels: nanoscopic effects of silylation revealed by in situ synchrotron X-ray scattering. Nanoscale Adv 2023; 6:111-125. [PMID: 38125596 PMCID: PMC10729877 DOI: 10.1039/d3na00584d] [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] [Figures] [Subscribe] [Scholar Register] [Received: 08/01/2023] [Accepted: 11/16/2023] [Indexed: 12/23/2023]
Abstract
Ambient pressure drying (APD) allows for synthesizing aerogels without expensive and sophisticated equipment for achieving supercritical conditions. Since APD does not eliminate the capillary stress that is induced by the liquid/vapour phase boundary, the shrinkage during drying needs to be prevented or reversed. The re-expansion of the silylated silica gels during drying is commonly referred to as the springback effect (SBE). The SBE is not only important for producing aerogels via APD, but is also a fascinating phenomenon, since it is accompanied by a significant volume change unusual for rigid ceramics. Synchrotron X-ray scattering has proven to be especially effective for the investigation of the volume change of these fractal silica structures on different length scales. In this work, we follow the drying, shrinkage, and (partial) re-expansion of various monolithic samples in situ to explore the occurrence of the SBE. For this purpose, various silylation agents, i.e., hexamethyldisilazane, trimethylchlorosilane, and triethylchlorosilane were used to investigate different shrinkage and re-expansion behavior. A scattering model was used to extract additional information of the evolving primary particle size, correlation length, fractal dimension, and other intensity contributions of the silica network and the hexane. While the primary particles pointed towards a relaxation at near molecular size, they were likely not involved in the SBE. However, structures near the size of the correlation length could be essential for the occurrence of this phenomenon. These findings may lead to the origin of this interesting phenomenon, as well as a better understanding of the production of APD aerogels.
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Affiliation(s)
- Fabian Zemke
- Technische Universität Berlin, Faculty III Process Sciences, Institute of Materials Science and Technology, Chair of Advanced Ceramic Materials Straße des 17. Juni 135 10623 Berlin Germany https://www.tu.berlin/ceramics +49 30 314 22653
| | - Ernesto Scoppola
- Department of Biomaterials, Max Planck Institute of Colloids and Interfaces Am Mühlenberg 1 14476 Potsdam Germany https://www.mpikg.mpg.de/biomaterials +49 331 567 9259
| | - Ulla Simon
- Technische Universität Berlin, Faculty III Process Sciences, Institute of Materials Science and Technology, Chair of Advanced Ceramic Materials Straße des 17. Juni 135 10623 Berlin Germany https://www.tu.berlin/ceramics +49 30 314 22653
| | - Maged F Bekheet
- Technische Universität Berlin, Faculty III Process Sciences, Institute of Materials Science and Technology, Chair of Advanced Ceramic Materials Straße des 17. Juni 135 10623 Berlin Germany https://www.tu.berlin/ceramics +49 30 314 22653
| | - Wolfgang Wagermaier
- Department of Biomaterials, Max Planck Institute of Colloids and Interfaces Am Mühlenberg 1 14476 Potsdam Germany https://www.mpikg.mpg.de/biomaterials +49 331 567 9259
| | - Aleksander Gurlo
- Technische Universität Berlin, Faculty III Process Sciences, Institute of Materials Science and Technology, Chair of Advanced Ceramic Materials Straße des 17. Juni 135 10623 Berlin Germany https://www.tu.berlin/ceramics +49 30 314 22653
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3
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Simmons M, Horbelt N, Sverko T, Scoppola E, Jackson DJ, Harrington MJ. Invasive mussels fashion silk-like byssus via mechanical processing of massive horizontally acquired coiled coils. Proc Natl Acad Sci U S A 2023; 120:e2311901120. [PMID: 37983489 PMCID: PMC10691215 DOI: 10.1073/pnas.2311901120] [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: 07/12/2023] [Accepted: 10/11/2023] [Indexed: 11/22/2023] Open
Abstract
Zebra and quagga mussels (Dreissena spp.) are invasive freshwater biofoulers that perpetrate devastating economic and ecological impact. Their success depends on their ability to anchor onto substrates with protein-based fibers known as byssal threads. Yet, compared to other mussel lineages, little is understood about the proteins comprising their fibers or their evolutionary history. Here, we investigated the hierarchical protein structure of Dreissenid byssal threads and the process by which they are fabricated. Unique among bivalves, we found that threads possess a predominantly β-sheet crystalline structure reminiscent of spider silk. Further analysis revealed unexpectedly that the Dreissenid thread protein precursors are mechanoresponsive α-helical proteins that are mechanically processed into β-crystallites during thread formation. Proteomic analysis of the byssus secretory organ and byssus fibers revealed a family of ultrahigh molecular weight (354 to 467 kDa) asparagine-rich (19 to 20%) protein precursors predicted to form α-helical coiled coils. Moreover, several independent lines of evidence indicate that the ancestral predecessor of these proteins was likely acquired via horizontal gene transfer. This chance evolutionary event that transpired at least 12 Mya has endowed Dreissenids with a distinctive and effective fiber formation mechanism, contributing significantly to their success as invasive species and possibly, inspiring new materials design.
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Affiliation(s)
- Miriam Simmons
- Department of Chemistry, McGill University, Montreal, QCH3A 0B8, Canada
| | - Nils Horbelt
- Department of Biomaterials, Max Planck Institute of Colloids and Interfaces, Potsdam14476, Germany
| | - Tara Sverko
- Department of Chemistry, McGill University, Montreal, QCH3A 0B8, Canada
| | - Ernesto Scoppola
- Department of Biomaterials, Max Planck Institute of Colloids and Interfaces, Potsdam14476, Germany
| | - Daniel J. Jackson
- Department of Geobiology, Geoscience Center, University of Göttingen, Göttingen37077, Germany
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4
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Karafiludis S, Scoppola E, Wolf SE, Kochovski Z, Matzdorff D, Van Driessche AES, Hövelmann J, Emmerling F, Stawski TM. Evidence for liquid-liquid phase separation during the early stages of Mg-struvite formation. J Chem Phys 2023; 159:134503. [PMID: 37787132 DOI: 10.1063/5.0166278] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Accepted: 09/15/2023] [Indexed: 10/04/2023] Open
Abstract
The precipitation of struvite, a magnesium ammonium phosphate hexahydrate (MgNH4PO4 · 6H2O) mineral, from wastewater is a promising method for recovering phosphorous. While this process is commonly used in engineered environments, our understanding of the underlying mechanisms responsible for the formation of struvite crystals remains limited. Specifically, indirect evidence suggests the involvement of an amorphous precursor and the occurrence of multi-step processes in struvite formation, which would indicate non-classical paths of nucleation and crystallization. In this study, we use synchrotron-based in situ x-ray scattering complemented by cryogenic transmission electron microscopy to obtain new insights from the earliest stages of struvite formation. The holistic scattering data captured the structure of an entire assembly in a time-resolved manner. The structural features comprise the aqueous medium, the growing struvite crystals, and any potential heterogeneities or complex entities. By analysing the scattering data, we found that the onset of crystallization causes a perturbation in the structure of the surrounding aqueous medium. This perturbation is characterized by the occurrence and evolution of Ornstein-Zernike fluctuations on a scale of about 1 nm, suggesting a non-classical nature of the system. We interpret this phenomenon as a liquid-liquid phase separation, which gives rise to the formation of the amorphous precursor phase preceding actual crystal growth of struvite. Our microscopy results confirm that the formation of Mg-struvite includes a short-lived amorphous phase, lasting >10 s.
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Affiliation(s)
- Stephanos Karafiludis
- Federal Institute for Materials Research and Testing (BAM), Richard-Willstatter-Straße 11, 12489 Berlin, Germany
- Department of Chemistry, Humboldt-Universität zu Berlin, Brook-Taylor-Straße 2, 12489 Berlin, Germany
| | - Ernesto Scoppola
- Biomaterials, Hierarchical Structure of Biological and Bio-inspired Materials, Max Planck Institute of Colloids and Interfaces, Potsdam 14476, Germany
| | - Stephan E Wolf
- Friedrich-Alexander University Erlangen-Nürnberg (FAU), Department of Materials Science and Engineering, Institute for Glass and Ceramics, Martensstr. 5, 91058 Erlangen, Germany
| | - Zdravko Kochovski
- Helmholtz-Zentrum Berlin for Materials and Energy, Hahn-Meitner Platz 1, 14109 Berlin, Germany
| | - David Matzdorff
- Helmholtz-Zentrum Berlin for Materials and Energy, Hahn-Meitner Platz 1, 14109 Berlin, Germany
| | - Alexander E S Van Driessche
- Instituto Andaluz de Ciencias de la Tierra (IACT), CSIC - Universidad de Granada, Av. De las Palmeras 4, 18100 Armilla, Spain
| | - Jörn Hövelmann
- REMONDIS Production GmbH, Brunnenstraße 138, 44536 Lünen, Germany
| | - Franziska Emmerling
- Federal Institute for Materials Research and Testing (BAM), Richard-Willstatter-Straße 11, 12489 Berlin, Germany
- Department of Chemistry, Humboldt-Universität zu Berlin, Brook-Taylor-Straße 2, 12489 Berlin, Germany
| | - Tomasz M Stawski
- Federal Institute for Materials Research and Testing (BAM), Richard-Willstatter-Straße 11, 12489 Berlin, Germany
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5
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Gonthier J, Rilling T, Scoppola E, Zemke F, Gurlo A, Fratzl P, Wagermaier W. Quantitative Imaging using an Automated in-operando micro-CT Workflow: Tracking the Drying and Related Shape-changes of Silica Aerogels. Microsc Microanal 2023; 29:211-212. [PMID: 37613091 DOI: 10.1093/micmic/ozad067.093] [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] [Subscribe] [Scholar Register] [Indexed: 08/25/2023]
Affiliation(s)
- Julien Gonthier
- Max Planck Institute of Colloids and Interfaces, Department of Biomaterials, Postdam, Germany
| | - Tilman Rilling
- Max Planck Institute of Colloids and Interfaces, Department of Biomaterials, Postdam, Germany
| | - Ernesto Scoppola
- Max Planck Institute of Colloids and Interfaces, Department of Biomaterials, Postdam, Germany
| | - Fabian Zemke
- Technische Universität Berlin, Chair of Advanced Ceramic Materials, Berlin, Germany
| | - Aleksander Gurlo
- Technische Universität Berlin, Chair of Advanced Ceramic Materials, Berlin, Germany
| | - Peter Fratzl
- Max Planck Institute of Colloids and Interfaces, Department of Biomaterials, Postdam, Germany
| | - Wolfgang Wagermaier
- Max Planck Institute of Colloids and Interfaces, Department of Biomaterials, Postdam, Germany
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6
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Pylkkänen R, Werner D, Bishoyi A, Weil D, Scoppola E, Wagermaier W, Safeer A, Bahri S, Baldus M, Paananen A, Penttilä M, Szilvay GR, Mohammadi P. The complex structure of Fomes fomentarius represents an architectural design for high-performance ultralightweight materials. Sci Adv 2023; 9:eade5417. [PMID: 36812306 PMCID: PMC9946349 DOI: 10.1126/sciadv.ade5417] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/25/2022] [Accepted: 01/20/2023] [Indexed: 06/18/2023]
Abstract
High strength, hardness, and fracture toughness are mechanical properties that are not commonly associated with the fleshy body of a fungus. Here, we show with detailed structural, chemical, and mechanical characterization that Fomes fomentarius is an exception, and its architectural design is a source of inspiration for an emerging class of ultralightweight high-performance materials. Our findings reveal that F. fomentarius is a functionally graded material with three distinct layers that undergo multiscale hierarchical self-assembly. Mycelium is the primary component in all layers. However, in each layer, mycelium exhibits a very distinct microstructure with unique preferential orientation, aspect ratio, density, and branch length. We also show that an extracellular matrix acts as a reinforcing adhesive that differs in each layer in terms of quantity, polymeric content, and interconnectivity. These findings demonstrate how the synergistic interplay of the aforementioned features results in distinct mechanical properties for each layer.
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Affiliation(s)
- Robert Pylkkänen
- VTT Technical Research Centre of Finland Ltd., Espoo, FI-02044 VTT, Finland
- Department of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, FI-00076 Aalto, Finland
| | - Daniel Werner
- Department of Biomaterials, Max Planck Institute of Colloids and Interfaces, D-14476 Potsdam, Germany
| | - Ajit Bishoyi
- NMR Spectroscopy, Bijvoet Center for Biomolecular Research, Utrecht University, Padualaan 8, 3584 CH Utrecht, Netherlands
| | - Dominik Weil
- KLA-Tencor GmbH, Moritzburger Weg 67, Dresden 01109, Germany
| | - Ernesto Scoppola
- Department of Biomaterials, Max Planck Institute of Colloids and Interfaces, D-14476 Potsdam, Germany
| | - Wolfgang Wagermaier
- Department of Biomaterials, Max Planck Institute of Colloids and Interfaces, D-14476 Potsdam, Germany
| | - Adil Safeer
- NMR Spectroscopy, Bijvoet Center for Biomolecular Research, Utrecht University, Padualaan 8, 3584 CH Utrecht, Netherlands
| | - Salima Bahri
- NMR Spectroscopy, Bijvoet Center for Biomolecular Research, Utrecht University, Padualaan 8, 3584 CH Utrecht, Netherlands
| | - Marc Baldus
- NMR Spectroscopy, Bijvoet Center for Biomolecular Research, Utrecht University, Padualaan 8, 3584 CH Utrecht, Netherlands
| | - Arja Paananen
- VTT Technical Research Centre of Finland Ltd., Espoo, FI-02044 VTT, Finland
| | - Merja Penttilä
- VTT Technical Research Centre of Finland Ltd., Espoo, FI-02044 VTT, Finland
- Department of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, FI-00076 Aalto, Finland
| | - Géza R. Szilvay
- VTT Technical Research Centre of Finland Ltd., Espoo, FI-02044 VTT, Finland
| | - Pezhman Mohammadi
- VTT Technical Research Centre of Finland Ltd., Espoo, FI-02044 VTT, Finland
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7
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Zemke F, Gonthier J, Scoppola E, Simon U, Bekheet MF, Wagermaier W, Gurlo A. Origin of the Springback Effect in Ambient-Pressure-Dried Silica Aerogels: The Effect of Surface Silylation. Gels 2023; 9:gels9020160. [PMID: 36826330 PMCID: PMC9956377 DOI: 10.3390/gels9020160] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2023] [Revised: 02/10/2023] [Accepted: 02/13/2023] [Indexed: 02/19/2023] Open
Abstract
Ambient pressure drying (APD) can prospectively reduce the costs of aerogel fabrication and processing. APD relies solely on preventing shrinkage or making it reversible. The latter, i.e., the aerogel re-expansion after drying (so-called springback effect-SBE), needs to be controlled for reproducible aerogel fabrication by APD. This can be achieved by an appropriate surface functionalization of aerogel materials (e.g., SiO2). This work addresses the fabrication of monolithic SiO2 aerogels and xerogels by APD. The effect of several silylation agents, i.e., trimethylchlorosilane, triethylchlorosilane, and hexamethyldisilazane on the SBE is studied in detail, applying several complementary experimental techniques, allowing the evaluation of the macroscopic and microscopic morphology as well as the composition of SiO2 aerogels. Here, we show that some physical properties, e.g., the bulk density, the macroscopic structure, and pore sizes/volumes, were significantly affected by the re-expansion. However, silylation did not necessarily lead to full re-expansion. Therefore, similarities in the molecular composition could not be equated to similarities in the SBE. The influences of steric hindrance and reactivity are discussed. The impact of silylation is crucial in tailoring the SBE and, as a result, the APD of monolithic aerogels.
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Affiliation(s)
- Fabian Zemke
- Chair of Advanced Ceramic Materials, Institute of Materials Science and Technology, Faculty III Process Sciences, Technische Universität Berlin, Straße des 17. Juni 135, 10623 Berlin, Germany
- Correspondence: ; Tel.: +49-(0)30-314-22653
| | - Julien Gonthier
- Department of Biomaterials, Max Planck Institute of Colloids and Interfaces, Am Mühlenberg 1, 14476 Potsdam, Germany
| | - Ernesto Scoppola
- Department of Biomaterials, Max Planck Institute of Colloids and Interfaces, Am Mühlenberg 1, 14476 Potsdam, Germany
| | - Ulla Simon
- Chair of Advanced Ceramic Materials, Institute of Materials Science and Technology, Faculty III Process Sciences, Technische Universität Berlin, Straße des 17. Juni 135, 10623 Berlin, Germany
| | - Maged F. Bekheet
- Chair of Advanced Ceramic Materials, Institute of Materials Science and Technology, Faculty III Process Sciences, Technische Universität Berlin, Straße des 17. Juni 135, 10623 Berlin, Germany
| | - Wolfgang Wagermaier
- Department of Biomaterials, Max Planck Institute of Colloids and Interfaces, Am Mühlenberg 1, 14476 Potsdam, Germany
| | - Aleksander Gurlo
- Chair of Advanced Ceramic Materials, Institute of Materials Science and Technology, Faculty III Process Sciences, Technische Universität Berlin, Straße des 17. Juni 135, 10623 Berlin, Germany
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8
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Amor M, Mosselmans JFW, Scoppola E, Li C, Faivre D, Chevrier DM. Crystal-Chemical and Biological Controls of Elemental Incorporation into Magnetite Nanocrystals. ACS Nano 2023; 17:927-939. [PMID: 36595434 DOI: 10.1021/acsnano.2c05469] [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] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Magnetite nanoparticles possess numerous fundamental, biomedical, and industrial applications, many of which depend on tuning the magnetic properties. This is often achieved by the incorporation of trace and minor elements into the magnetite lattice. Such incorporation was shown to depend strongly on the magnetite formation pathway (i.e., abiotic vs biological), but the mechanisms controlling element partitioning between magnetite and its surrounding precipitation solution remain to be elucidated. Here, we used a combination of theoretical modeling (lattice and crystal field theories) and experimental evidence (high-resolution inductively coupled plasma-mass spectrometry and X-ray absorption spectroscopy) to demonstrate that element incorporation into abiotic magnetite nanoparticles is controlled principally by cation size and valence. Elements from the first series of transition metals (Cr to Zn) constituted exceptions to this finding, as their incorporation appeared to be also controlled by the energy levels of their unfilled 3d orbitals, in line with crystal field mechanisms. We finally show that element incorporation into biological magnetite nanoparticles produced by magnetotactic bacteria (MTB) cannot be explained by crystal-chemical parameters alone, which points to the biological control exerted by the bacteria over the element transfer between the MTB growth medium and the intracellular environment. This screening effect generates biological magnetite with a purer chemical composition in comparison to the abiotic materials formed in a solution of similar composition. Our work establishes a theoretical framework for understanding the crystal-chemical and biological controls of trace and minor cation incorporation into magnetite, thereby providing predictive methods to tailor the composition of magnetite nanoparticles for improved control over magnetic properties.
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Affiliation(s)
- Matthieu Amor
- Aix-Marseille Université, CEA, CNRS, BIAM, 13108Saint-Paul-lez-Durance, France
| | | | - Ernesto Scoppola
- Biomaterials, Hierarchical Structure of Biological and Bio-inspired Materials, Max Planck Institute of Colloids and Interfaces, Potsdam14476, Germany
| | - Chenghao Li
- Biomaterials, Hierarchical Structure of Biological and Bio-inspired Materials, Max Planck Institute of Colloids and Interfaces, Potsdam14476, Germany
| | - Damien Faivre
- Aix-Marseille Université, CEA, CNRS, BIAM, 13108Saint-Paul-lez-Durance, France
| | - Daniel M Chevrier
- Aix-Marseille Université, CEA, CNRS, BIAM, 13108Saint-Paul-lez-Durance, France
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9
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Sauer K, Zizak I, Forien JB, Rack A, Scoppola E, Zaslansky P. Primary radiation damage in bone evolves via collagen destruction by photoelectrons and secondary emission self-absorption. Nat Commun 2022; 13:7829. [PMID: 36539409 PMCID: PMC9768145 DOI: 10.1038/s41467-022-34247-z] [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] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Accepted: 10/18/2022] [Indexed: 12/24/2022] Open
Abstract
X-rays are invaluable for imaging and sterilization of bones, yet the resulting ionization and primary radiation damage mechanisms are poorly understood. Here we monitor in-situ collagen backbone degradation in dry bones using second-harmonic-generation and X-ray diffraction. Collagen breaks down by cascades of photon-electron excitations, enhanced by the presence of mineral nanoparticles. We observe protein disintegration with increasing exposure, detected as residual strain relaxation in pre-stressed apatite nanocrystals. Damage rapidly grows from the onset of irradiation, suggesting that there is no minimal 'safe' dose that bone collagen can sustain. Ionization of calcium and phosphorous in the nanocrystals yields fluorescence and high energy electrons giving rise to structural damage that spreads beyond regions directly illuminated by the incident radiation. Our findings highlight photoelectrons as major agents of damage to bone collagen with implications to all situations where bones are irradiated by hard X-rays and in particular for small-beam mineralized collagen fiber investigations.
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Affiliation(s)
- Katrein Sauer
- grid.6363.00000 0001 2218 4662Charité – Universitätsmedizin Berlin, Department for Operative, Preventive and Pediatric Dentistry, Aßmannshauser Straße 4-6, 14197 Berlin, Germany
| | - Ivo Zizak
- grid.424048.e0000 0001 1090 3682Helmholtz-Zentrum Berlin, Department for Structure and Dynamics of Energy Materials (SE-ASD), Albert-Einstein-Straße 15, 12489 Berlin, Germany
| | - Jean-Baptiste Forien
- grid.250008.f0000 0001 2160 9702Lawrence Livermore National Laboratory, Materials Science Division, 7000 East Ave, Livermore, CA 94550 USA
| | - Alexander Rack
- grid.5398.70000 0004 0641 6373ESRF - The European Synchrotron, Structure of Materials Group - ID19, CS 40220, F-38043, Grenoble, Cedex 9 France
| | - Ernesto Scoppola
- grid.461615.10000 0000 8925 2562Max Planck Institute of Colloids and Interfaces, Department of Biomaterials, Am Mühlenberg 1, 14476 Potsdam, Brandenburg Germany
| | - Paul Zaslansky
- grid.6363.00000 0001 2218 4662Charité – Universitätsmedizin Berlin, Department for Operative, Preventive and Pediatric Dentistry, Aßmannshauser Straße 4-6, 14197 Berlin, Germany
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10
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Spaeker O, Taylor GJ, Wilts BD, Slabý T, Abdel‐Rahman MAK, Scoppola E, Schmitt CNZ, Sztucki M, Liu J, Bertinetti L, Wagermaier W, Scholtz G, Fratzl P, Politi Y. Gradients of Orientation, Composition, and Hydration of Proteins for Efficient Light Collection by the Cornea of the Horseshoe Crab. Adv Sci (Weinh) 2022; 9:e2203371. [PMID: 36251923 PMCID: PMC9685478 DOI: 10.1002/advs.202203371] [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] [Figures] [Subscribe] [Scholar Register] [Received: 06/09/2022] [Revised: 08/30/2022] [Indexed: 06/16/2023]
Abstract
The lateral eyes of the horseshoe crab, Limulus polyphemus, are the largest compound eyes within recent Arthropoda. The cornea of these eyes contains hundreds of inward projecting elongated cuticular cones and concentrate light onto proximal photoreceptor cells. Although this visual system has been extensively studied before, the precise mechanism allowing vision has remained controversial. Correlating high-resolution quantitative refractive index (RI) mapping and structural analysis, it is demonstrated how gradients of RI in the cornea stem from structural and compositional gradients in the cornea. In particular, these RI variations result from the chitin-protein fibers architecture, heterogeneity in protein composition, and bromine doping, as well as spatial variation in water content resulting from matrix cross-linking on the one hand and cuticle porosity on the other hand. Combining the realistic cornea structure and measured RI gradients with full-wave optical modeling and ray tracing, it is revealed that the light collection mechanism switches from refraction-based graded index (GRIN) optics at normal light incidence to combined GRIN and total internal reflection mechanism at high incident angles. The optical properties of the cornea are governed by different mechanisms at different hierarchical levels, demonstrating the remarkable versatility of arthropod cuticle.
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Affiliation(s)
- Oliver Spaeker
- Department of BiomaterialsMax Planck Institute of Colloids and Interfaces14476PotsdamGermany
| | - Gavin J. Taylor
- Institute for Globally Distributed Open Research and Education (IGDORE)Ribeirão Preto14091‐310Brazil
| | - Bodo D. Wilts
- Chemistry and Physics of MaterialsUniversity of SalzburgJakob‐Haringer‐Str. 2aSalzburg5020Austria
- Adolphe Merkle InstituteUniversity of FribourgChemin des Verdiers 4Fribourg1700Switzerland
| | - Tomáš Slabý
- TELIGHTLibušina třída 21Brno623 00Czech Republic
| | | | - Ernesto Scoppola
- Department of BiomaterialsMax Planck Institute of Colloids and Interfaces14476PotsdamGermany
| | - Clemens N. Z. Schmitt
- Department of BiomaterialsMax Planck Institute of Colloids and Interfaces14476PotsdamGermany
| | - Michael Sztucki
- European Synchrotron Radiation Facility (ESRF)71 avenue des Martyrs, CS 40220Grenoble Cedex 938043France
| | - Jiliang Liu
- European Synchrotron Radiation Facility (ESRF)71 avenue des Martyrs, CS 40220Grenoble Cedex 938043France
| | - Luca Bertinetti
- B CUBE – Center for Molecular BioengineeringTechnische Universität Dresden01307DresdenGermany
| | - Wolfgang Wagermaier
- Department of BiomaterialsMax Planck Institute of Colloids and Interfaces14476PotsdamGermany
| | - Gerhard Scholtz
- Humboldt‐University BerlinInstitute of BiologyPhilippstraße 1310115BerlinGermany
| | - Peter Fratzl
- Department of BiomaterialsMax Planck Institute of Colloids and Interfaces14476PotsdamGermany
| | - Yael Politi
- B CUBE – Center for Molecular BioengineeringTechnische Universität Dresden01307DresdenGermany
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11
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Pusterla J, Scoppola E, Appel C, Mukhina T, Shen C, Brezesinski G, Schneck E. Characterization of lipid bilayers adsorbed to functionalized air/water interfaces. Nanoscale 2022; 14:15048-15059. [PMID: 36200471 DOI: 10.1039/d2nr03334h] [Citation(s) in RCA: 1] [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] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Lipid bilayers immobilized in planar geometries, such as solid-supported or "floating" bilayers, have enabled detailed studies of biological membranes with numerous experimental techniques, notably X-ray and neutron reflectometry. However, the presence of a solid support also has disadvantages as it complicates the use of spectroscopic techniques as well as surface rheological measurements that would require surface deformations. Here, in order to overcome these limitations, we investigate lipid bilayers adsorbed to inherently soft and experimentally well accessible air/water interfaces that are functionalized with Langmuir monolayers of amphiphiles. The bilayers are characterized with ellipsometry, X-ray scattering, and X-ray fluorescence. Grazing-incidence X-ray diffraction reveals that lipid bilayers in a chain-ordered state can have significantly different structural features than regular Langmuir monolayers of the same composition. Our results suggest that bilayers at air/water interfaces may be well suited for fundamental studies in the field of membrane biophysics.
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Affiliation(s)
- Julio Pusterla
- Institute for Condensed Matter Physics, TU Darmstadt, Hochschulstrasse 8, 64289 Darmstadt, Germany.
| | - Ernesto Scoppola
- Max Planck Institute of Colloids and Interfaces, Am Mühlenberg 1, 14476 Potsdam, Germany
| | - Christian Appel
- Institute for Condensed Matter Physics, TU Darmstadt, Hochschulstrasse 8, 64289 Darmstadt, Germany.
| | - Tetiana Mukhina
- Institute for Condensed Matter Physics, TU Darmstadt, Hochschulstrasse 8, 64289 Darmstadt, Germany.
| | - Chen Shen
- Deutsches Elektronen-Synchrotron DESY, Notkestrasse 85, 22607 Hamburg, Germany
| | - Gerald Brezesinski
- Institute for Condensed Matter Physics, TU Darmstadt, Hochschulstrasse 8, 64289 Darmstadt, Germany.
| | - Emanuel Schneck
- Institute for Condensed Matter Physics, TU Darmstadt, Hochschulstrasse 8, 64289 Darmstadt, Germany.
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12
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Spies PA, Keplinger T, Horbelt N, Reppe F, Scoppola E, Eder M, Fratzl P, Burgert I, Rüggeberg M. Cellulose lattice strains and stress transfer in native and delignified wood. Carbohydr Polym 2022; 296:119922. [DOI: 10.1016/j.carbpol.2022.119922] [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] [Received: 04/08/2022] [Revised: 07/22/2022] [Accepted: 07/22/2022] [Indexed: 11/25/2022]
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13
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Martins ICB, Al‐Sabbagh D, Bentrup U, Marquardt J, Schmid T, Scoppola E, Kraus W, Stawski TM, Guilherme Buzanich A, Yusenko KV, Weidner S, Emmerling F. Formation Mechanism of a Nano‐Ring of Bismuth Cations and Mono‐Lacunary Keggin‐Type Phosphomolybdate. Chemistry 2022; 28:e202200079. [PMID: 35267226 PMCID: PMC9322599 DOI: 10.1002/chem.202200079] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2022] [Indexed: 11/07/2022]
Abstract
A new hetero‐bimetallic polyoxometalate (POM) nano‐ring was synthesized in a one‐pot procedure. The structure consists of tetrameric units containing four bismuth‐substituted monolacunary Keggin anions including distorted [BiO8] cubes. The nano‐ring is formed via self‐assembly from metal precursors in aqueous acidic medium. The compound (NH4)16[(BiPMo11O39)4] ⋅ 22 H2O; (P4Bi4Mo44) was characterized by single‐crystal X‐ray diffraction, extended X‐ray absorption fine structure spectroscopy (EXAFS), Raman spectroscopy, matrix‐assisted laser desorption/ionisation‐time of flight mass spectrometry (MALDI‐TOF), and thermogravimetry/differential scanning calorimetry mass spectrometry (TG‐DSC‐MS). The formation of the nano‐ring in solution was studied by time‐resolved in situ small‐ and wide‐angle X‐ray scattering (SAXS/WAXS) and in situ EXAFS measurements at the Mo−K and the Bi−L3 edge indicating a two‐step process consisting of condensation of Mo‐anions and formation of Bi−Mo‐units followed by a rapid self‐assembly to yield the final tetrameric ring structure.
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Affiliation(s)
- Inês C. B. Martins
- BAM Federal Institute for Materials Research and TestingRichard-Willstätter-Str.1112489BerlinGermany
| | - Dominik Al‐Sabbagh
- BAM Federal Institute for Materials Research and TestingRichard-Willstätter-Str.1112489BerlinGermany
| | - Ursula Bentrup
- Leibniz-Institut für Katalyse e. V. (LIKAT)Albert-Einstein-Str. 29a18059RostockGermany
| | - Julien Marquardt
- BAM Federal Institute for Materials Research and TestingRichard-Willstätter-Str.1112489BerlinGermany
| | - Thomas Schmid
- School of Analytical Sciences Adlershof (SALSA)Humboldt-Universität zu BerlinUnter den Linden 610099BerlinGermany
| | - Ernesto Scoppola
- Biomaterials, Hierarchical Structure of Biological and Bio-inspired MaterialsMax Planck Institute of Colloids and InterfacesAm Mühlenberg 114476PotsdamGermany
| | - Werner Kraus
- BAM Federal Institute for Materials Research and TestingRichard-Willstätter-Str.1112489BerlinGermany
| | - Tomasz M. Stawski
- BAM Federal Institute for Materials Research and TestingRichard-Willstätter-Str.1112489BerlinGermany
| | - Ana Guilherme Buzanich
- BAM Federal Institute for Materials Research and TestingRichard-Willstätter-Str.1112489BerlinGermany
| | - Kirill V. Yusenko
- BAM Federal Institute for Materials Research and TestingRichard-Willstätter-Str.1112489BerlinGermany
| | - Steffen Weidner
- BAM Federal Institute for Materials Research and TestingRichard-Willstätter-Str.1112489BerlinGermany
| | - Franziska Emmerling
- BAM Federal Institute for Materials Research and TestingRichard-Willstätter-Str.1112489BerlinGermany
- Department of ChemistryHumboldt-Universität zu BerlinBrook-Taylor-Str. 212489BerlinGermany
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14
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de Santis A, Scoppola E, Ottaviani MF, Koutsioubas A, Barnsley LC, Paduano L, D’Errico G, Russo Krauss I. Order vs. Disorder: Cholesterol and Omega-3 Phospholipids Determine Biomembrane Organization. Int J Mol Sci 2022; 23:ijms23105322. [PMID: 35628128 PMCID: PMC9140907 DOI: 10.3390/ijms23105322] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Revised: 05/06/2022] [Accepted: 05/07/2022] [Indexed: 02/06/2023] Open
Abstract
Lipid structural diversity strongly affects biomembrane chemico-physical and structural properties in addition to membrane-associated events. At high concentrations, cholesterol increases membrane order and rigidity, while polyunsaturated lipids are reported to increase disorder and flexibility. How these different tendencies balance in composite bilayers is still controversial. In this study, electron paramagnetic resonance spectroscopy, small angle neutron scattering, and neutron reflectivity were used to investigate the structural properties of cholesterol-containing lipid bilayers in the fluid state with increasing amounts of polyunsaturated omega-3 lipids. Either the hybrid 1-stearoyl-2-docosahexaenoyl-sn-glycero-3-phosphocholine or the symmetric 1,2-docosahexaenoyl-sn-glycero-3-phosphocholine were added to the mixture of the naturally abundant 1-palmitoyl-2-oleyl-sn-glycero-3-phosphocholine and cholesterol. Our results indicate that the hybrid and the symmetric omega-3 phospholipids affect the microscopic organization of lipid bilayers differently. Cholesterol does not segregate from polyunsaturated phospholipids and, through interactions with them, is able to suppress the formation of non-lamellar structures induced by the symmetric polyunsaturated lipid. However, this order/disorder balance leads to a bilayer whose structural organization cannot be ascribed to either a liquid ordered or to a canonical liquid disordered phase, in that it displays a very loose packing of the intermediate segments of lipid chains.
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Affiliation(s)
- Augusta de Santis
- Department of Chemical Sciences, University of Naples Federico II, I-80126 Naples, Italy; (A.d.S.); (L.P.)
- CSGI (Consorzio per lo Sviluppo dei Sistemi a Grande Interfase), I-50019 Florence, Italy
| | - Ernesto Scoppola
- Max Planck Institut für Kolloid und Grenzflächenforschung, 14476 Potsdam, Germany;
| | | | - Alexandros Koutsioubas
- Jülich Centre for Neutron Science (JCNS) at Heinz Maier-Leibnitz Zentrum (MLZ), 85748 Garching, Germany; (A.K.); (L.C.B.)
| | - Lester C. Barnsley
- Jülich Centre for Neutron Science (JCNS) at Heinz Maier-Leibnitz Zentrum (MLZ), 85748 Garching, Germany; (A.K.); (L.C.B.)
- Australian Synchrotron, ANSTO, Clayton 3168, Australia
| | - Luigi Paduano
- Department of Chemical Sciences, University of Naples Federico II, I-80126 Naples, Italy; (A.d.S.); (L.P.)
- CSGI (Consorzio per lo Sviluppo dei Sistemi a Grande Interfase), I-50019 Florence, Italy
| | - Gerardino D’Errico
- Department of Chemical Sciences, University of Naples Federico II, I-80126 Naples, Italy; (A.d.S.); (L.P.)
- CSGI (Consorzio per lo Sviluppo dei Sistemi a Grande Interfase), I-50019 Florence, Italy
- Correspondence: (G.D.); (I.R.K.)
| | - Irene Russo Krauss
- Department of Chemical Sciences, University of Naples Federico II, I-80126 Naples, Italy; (A.d.S.); (L.P.)
- CSGI (Consorzio per lo Sviluppo dei Sistemi a Grande Interfase), I-50019 Florence, Italy
- Correspondence: (G.D.); (I.R.K.)
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15
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Ping H, Wagermaier W, Horbelt N, Scoppola E, Li C, Werner P, Fu Z, Fratzl P. Mineralization generates megapascal contractile stresses in collagen fibrils. Science 2022; 376:188-192. [PMID: 35389802 DOI: 10.1126/science.abm2664] [Citation(s) in RCA: 38] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
During bone formation, collagen fibrils mineralize with carbonated hydroxyapatite, leading to a hybrid material with excellent properties. Other minerals are also known to nucleate within collagen in vitro. For a series of strontium- and calcium-based minerals, we observed that their precipitation leads to a contraction of collagen fibrils, reaching stresses as large as several megapascals. The magnitude of the stress depends on the type and amount of mineral. Using in-operando synchrotron x-ray scattering, we analyzed the kinetics of mineral deposition. Whereas no contraction occurs when the mineral deposits outside fibrils only, intrafibrillar mineralization generates fibril contraction. This chemomechanical effect occurs with collagen fully immersed in water and generates a mineral-collagen composite with tensile fibers, reminiscent of the principle of reinforced concrete.
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Affiliation(s)
- Hang Ping
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Luoshi Road No. 122, Wuhan 430070, China.,Department of Biomaterials, Max Planck Institute of Colloids and Interfaces, Am Mühlenberg 1, 14476 Potsdam, Germany
| | - Wolfgang Wagermaier
- Department of Biomaterials, Max Planck Institute of Colloids and Interfaces, Am Mühlenberg 1, 14476 Potsdam, Germany
| | - Nils Horbelt
- Department of Biomaterials, Max Planck Institute of Colloids and Interfaces, Am Mühlenberg 1, 14476 Potsdam, Germany
| | - Ernesto Scoppola
- Department of Biomaterials, Max Planck Institute of Colloids and Interfaces, Am Mühlenberg 1, 14476 Potsdam, Germany
| | - Chenghao Li
- Department of Biomaterials, Max Planck Institute of Colloids and Interfaces, Am Mühlenberg 1, 14476 Potsdam, Germany
| | - Peter Werner
- Department of Biomaterials, Max Planck Institute of Colloids and Interfaces, Am Mühlenberg 1, 14476 Potsdam, Germany
| | - Zhengyi Fu
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Luoshi Road No. 122, Wuhan 430070, China
| | - Peter Fratzl
- Department of Biomaterials, Max Planck Institute of Colloids and Interfaces, Am Mühlenberg 1, 14476 Potsdam, Germany
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16
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Scoppola E, Gochev GG, Drnec J, Pithan L, Novikov D, Schneck E. Investigating the Conformation of Surface-Adsorbed Proteins with Standing-Wave X-ray Fluorescence. Biomacromolecules 2021; 22:5195-5203. [PMID: 34813296 DOI: 10.1021/acs.biomac.1c01136] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [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
Protein adsorption to surfaces is at the heart of numerous technological and bioanalytical applications, but sometimes, it is also associated with medical risks. To deepen our insights into processes involving layers of surface-adsorbed proteins, high-resolution structural information is essential. Here, we use standing-wave X-ray fluorescence (SWXF) in combination with an optimized liquid-cell setup to investigate the underwater conformation of the random-coiled phosphoprotein β-casein adsorbed to hydrophilic and hydrophobized solid surfaces. The orientation of the protein, as determined through the distributions of sulfur and phosphorus, is found to be sensitive to the chemical nature of the substrate. While no preferred orientations are observed on hydrophobized surfaces, on hydrophilic Al oxide, β-casein is adsorbed as a diblock copolymer with the phosphorylated domain I attached to the surface. Our results demonstrate that targeting biologically relevant chemical elements with SWXF enables a detailed investigation of biomolecular layers under near-physiological conditions.
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Affiliation(s)
- Ernesto Scoppola
- Biomaterials Department, Max Planck Institute of Colloids and Interfaces, 14476 Potsdam, Germany
| | - Georgi G Gochev
- Biomaterials Department, Max Planck Institute of Colloids and Interfaces, 14476 Potsdam, Germany.,Jerzy Haber Institute of Catalysis and Surface Chemistry, Polish Academy of Sciences, 30-239 Krakow, Poland
| | - Jakub Drnec
- European Synchrotron Radiation Facility (ESRF), 38000 Grenoble, France
| | - Linus Pithan
- European Synchrotron Radiation Facility (ESRF), 38000 Grenoble, France
| | - Dmitri Novikov
- Deutsches Elektronen-Synchrotron (DESY), 22607 Hamburg, Germany
| | - Emanuel Schneck
- Biomaterials Department, Max Planck Institute of Colloids and Interfaces, 14476 Potsdam, Germany.,Physics Department, Technische Universität Darmstadt, 64289 Darmstadt, Germany
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17
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de Santis A, Vitiello G, Appavou MS, Scoppola E, Fragneto G, Barnsley LC, Clifton LA, Ottaviani MF, Paduano L, Russo Krauss I, D'Errico G. Not just a fluidifying effect: omega-3 phospholipids induce formation of non-lamellar structures in biomembranes. Soft Matter 2020; 16:10425-10438. [PMID: 33165495 DOI: 10.1039/d0sm01549k] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Polyunsaturated omega-3 fatty acid docosahexaenoic acid (DHA) is found in very high concentrations in a few peculiar tissues, suggesting that it must have a specialized role. DHA was proposed to affect the function of the cell membrane and related proteins through an indirect mechanism of action, based on the DHA-phospholipid effects on the lipid bilayer structure. In this respect, most studies have focused on its influence on lipid-rafts, somehow neglecting the analysis of effects on liquid disordered phases that constitute most of the cell membranes, by reporting in these cases only a general fluidifying effect. In this study, by combining neutron reflectivity, cryo-transmission electron microscopy, small angle neutron scattering, dynamic light scattering and electron paramagnetic resonance spectroscopy, we characterize liquid disordered bilayers formed by the naturally abundant 1-palmitoyl-2-oleoyl-sn-glycero-3-phosphocholine and different contents of a di-DHA glycero-phosphocholine, 22:6-22:6PC, from both a molecular/microscopic and supramolecular/mesoscopic viewpoint. We show that, below a threshold concentration of about 40% molar percent, incorporation of 22:6-22:6PC in the membrane increases the lipid dynamics slightly but sufficiently to promote the membrane deformation and increase of multilamellarity. Notably, beyond this threshold, 22:6-22:6PC disfavours the formation of lamellar phases, leading to a phase separation consisting mostly of small spherical particles that coexist with a minority portion of a lipid blob with water-filled cavities. Concurrently, from a molecular viewpoint, the polyunsaturated acyl chains tend to fold and expose the termini to the aqueous medium. We propose that this peculiar tendency is a key feature of the DHA-phospholipids making them able to modulate the local morphology of biomembranes.
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Affiliation(s)
- Augusta de Santis
- Department of Chemical Sciences, University of Naples Federico II, Naples, Italy.
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18
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Gochev GG, Scoppola E, Campbell RA, Noskov BA, Miller R, Schneck E. β-Lactoglobulin Adsorption Layers at the Water/Air Surface: 3. Neutron Reflectometry Study on the Effect of pH. J Phys Chem B 2019; 123:10877-10889. [PMID: 31725291 DOI: 10.1021/acs.jpcb.9b07733] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Several characteristics of β-lactoglobulin (BLG) layers adsorbed at the air/water interface exhibit a strong pH dependence, but our knowledge on the underlying structure-property relations is still fragmental. Here, we therefore extend our recent studies by neutron reflectometry (NR) and provide a comprehensive overview through direct measurements of the surface excess Γ and the layers' molecular structure. This enables comparison with available literature data to draw general conclusions. The NR experiments were performed at various pH values and within a wide range of protein concentrations, CBLG. Adsorption kinetics measurements in air-contrast-matched-water and over a narrow Qz range enabled direct quantification of the dynamic surface excess Γ(t) and are found to be consistent with ellipsometry data. Near the isoelectric point, pI, the rates of adsorption and Γ are maximal but only at sufficiently high CBLG. NR data collected over a wider Qz range and in two aqueous isotopic contrasts revealed the structure of adsorbed BLG layers at a steady state close to equilibrium. Independent of the pH, BLG was found to form dense monolayers with average thicknesses of 1.1 nm, suggesting flattening of the BLG globules upon adsorption as compared with their bulk dimensions (≈3.5 nm). Near pI and at sufficiently high CBLG, a thick (≈5.5 nm) but looser secondary sublayer is additionally formed adjacent to the dense primary monolayer. The thickness of this sublayer can be interpreted in terms of disordered BLG dimers. The results obtained and notably the specific interfacial structuring of BLG near pI complement previous observations relating the impact of solution pH and CBLG on other interfacial characteristics such as surface pressure and surface dilational viscoelasticity modulus.
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Affiliation(s)
- Georgi G Gochev
- Max Planck Institute of Colloids and Interfaces , 14476 Potsdam , Germany.,Institute of Physical Chemistry , Bulgarian Academy of Sciences , 1113 Sofia , Bulgaria
| | - Ernesto Scoppola
- Max Planck Institute of Colloids and Interfaces , 14476 Potsdam , Germany
| | - Richard A Campbell
- Institut Laue-Langevin , 71 Avenue des Martyrs, CS20156 , 38042 Grenoble , France.,Division of Pharmacy and Optometry , University of Manchester , M13 9PT Manchester , U.K
| | - Boris A Noskov
- Institute of Chemistry , St. Petersburg State University , 198504 Saint-Petersburg , Russia
| | - Reinhard Miller
- Max Planck Institute of Colloids and Interfaces , 14476 Potsdam , Germany
| | - Emanuel Schneck
- Max Planck Institute of Colloids and Interfaces , 14476 Potsdam , Germany
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19
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Lolicato F, Joly L, Martinez-Seara H, Fragneto G, Scoppola E, Baldelli Bombelli F, Vattulainen I, Akola J, Maccarini M. The Role of Temperature and Lipid Charge on Intake/Uptake of Cationic Gold Nanoparticles into Lipid Bilayers. Small 2019; 15:e1805046. [PMID: 31012268 DOI: 10.1002/smll.201805046] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [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: 11/29/2018] [Revised: 03/13/2019] [Indexed: 05/23/2023]
Abstract
Understanding the molecular mechanisms governing nanoparticle-membrane interactions is of prime importance for drug delivery and biomedical applications. Neutron reflectometry (NR) experiments are combined with atomistic and coarse-grained molecular dynamics (MD) simulations to study the interaction between cationic gold nanoparticles (AuNPs) and model lipid membranes composed of a mixture of zwitterionic di-stearoyl-phosphatidylcholine (DSPC) and anionic di-stearoyl-phosphatidylglycerol (DSPG). MD simulations show that the interaction between AuNPs and a pure DSPC lipid bilayer is modulated by a free energy barrier. This can be overcome by increasing temperature, which promotes an irreversible AuNP incorporation into the lipid bilayer. NR experiments confirm the encapsulation of the AuNPs within the lipid bilayer at temperatures around 55 °C. In contrast, the AuNP adsorption is weak and impaired by heating for a DSPC-DSPG (3:1) lipid bilayer. These results demonstrate that both the lipid charge and the temperature play pivotal roles in AuNP-membrane interactions. Furthermore, NR experiments indicate that the (negative) DSPG lipids are associated with lipid extraction upon AuNP adsorption, which is confirmed by coarse-grained MD simulations as a lipid-crawling effect driving further AuNP aggregation. Overall, the obtained detailed molecular view of the interaction mechanisms sheds light on AuNP incorporation and membrane destabilization.
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Affiliation(s)
- Fabio Lolicato
- Computational Physics Laboratory, Tampere University, P.O. Box 692, FI-33014, Tampere, Finland
- Department of Physics, University of Helsinki, P.O. Box 64, FI-00014, Helsinki, Finland
| | - Loic Joly
- Laboratory of Supramolecular and BioNano Materials, Department of Chemistry, Materials and Chemical Engineering, Politecnico di Milano, via Mancinelli 7, 20131, Milano, Italy
- Institut Laue-Langevin, 71 Avenue des Martyrs, 38042, Grenoble, France
| | - Hector Martinez-Seara
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Flemingovo nám. 2, 16610, Prague 6, Czech Republic
| | - Giovanna Fragneto
- Institut Laue-Langevin, 71 Avenue des Martyrs, 38042, Grenoble, France
| | - Ernesto Scoppola
- Max Planck Institute of Colloids and Interfaces, 14476, Potsdam, Germany
| | - Francesca Baldelli Bombelli
- Laboratory of Supramolecular and BioNano Materials, Department of Chemistry, Materials and Chemical Engineering, Politecnico di Milano, via Mancinelli 7, 20131, Milano, Italy
| | - Ilpo Vattulainen
- Computational Physics Laboratory, Tampere University, P.O. Box 692, FI-33014, Tampere, Finland
- Department of Physics, University of Helsinki, P.O. Box 64, FI-00014, Helsinki, Finland
- MEMPHYS-Center for Biomembrane Physics
| | - Jaakko Akola
- Department of Physics, Norwegian University of Science and Technology, NO-7491, Trondheim, Norway
| | - Marco Maccarini
- Laboratoire TIMC-IMAG, Université Grenoble Alpes, Domaine de la Merci, 38706, La Tronche Cedex, France
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21
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Rodriguez-Loureiro I, Scoppola E, Bertinetti L, Barbetta A, Fragneto G, Schneck E. Neutron reflectometry yields distance-dependent structures of nanometric polymer brushes interacting across water. Soft Matter 2017; 13:5767-5777. [PMID: 28766679 DOI: 10.1039/c7sm01066d] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The interaction between surfaces displaying end-grafted hydrophilic polymer brushes plays important roles in biology and in many wet-technological applications. In this context, the conformation of the brushes upon their mutual approach is crucial, because it affects interaction forces and the brushes' shear-tribological properties. While this aspect has been addressed by theory, experimental data on polymer conformations under confinement are difficult to obtain. Here, we study interacting planar brushes of hydrophilic polymers with defined length and grafting density. Via ellipsometry and neutron reflectometry we obtain pressure-distance curves and determine distance-dependent polymer conformations in terms of brush compression and reciprocative interpenetration. While the pressure-distance curves are satisfactorily described by the Alexander-de-Gennes model, the pronounced brush interpenetration as seen by neutron reflectometry motivates detailed simulation-based studies capable of treating brush interpenetration on a quantitative level.
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Scoppola E, Watkins EB, Campbell RA, Konovalov O, Girard L, Dufrêche J, Ferru G, Fragneto G, Diat O. Solvent Extraction: Structure of the Liquid–Liquid Interface Containing a Diamide Ligand. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201603395] [Citation(s) in RCA: 7] [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: 11/10/2022]
Affiliation(s)
- Ernesto Scoppola
- Institut Laue-Langevin 38000 Grenoble France
- Institut de Chimie Séparative de MarcouleUMR 5257 CEA/CNRS/ENSCM/Université Montpellier 30207 Bagnols-sur-Cèze France
| | - Erik B. Watkins
- Institut Laue-Langevin 38000 Grenoble France
- Materials Synthesis and Integrated DevicesLos Alamos National Laboratory Los Alamos NM 87545 USA
| | | | - Oleg Konovalov
- European Synchrotron Radiation Facility 38430 Grenoble France
| | - Luc Girard
- Institut de Chimie Séparative de MarcouleUMR 5257 CEA/CNRS/ENSCM/Université Montpellier 30207 Bagnols-sur-Cèze France
| | - Jean‐Francois Dufrêche
- Institut de Chimie Séparative de MarcouleUMR 5257 CEA/CNRS/ENSCM/Université Montpellier 30207 Bagnols-sur-Cèze France
| | | | | | - Olivier Diat
- Institut de Chimie Séparative de MarcouleUMR 5257 CEA/CNRS/ENSCM/Université Montpellier 30207 Bagnols-sur-Cèze France
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Scoppola E, Watkins EB, Campbell RA, Konovalov O, Girard L, Dufrêche JF, Ferru G, Fragneto G, Diat O. Solvent Extraction: Structure of the Liquid-Liquid Interface Containing a Diamide Ligand. Angew Chem Int Ed Engl 2016; 55:9326-30. [PMID: 27320727 DOI: 10.1002/anie.201603395] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [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: 04/06/2016] [Indexed: 11/09/2022]
Abstract
Knowledge of the (supra)molecular structure of an interface that contains amphiphilic ligand molecules is necessary for a full understanding of ion transfer during solvent extraction. Even if molecular dynamics already yield some insight in the molecular configurations in solution, hardly any experimental data giving access to distributions of both extractant molecules and ions at the liquid-liquid interface exist. Here, the combined application of X-ray and neutron reflectivity measurements represents a key milestone in the deduction of the interfacial structure and potential with respect to two different lipophilic ligands. Indeed, we show for the first time that hard trivalent cations can be repelled or attracted by the extractant-enriched interface according to the nature of the ligand.
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Affiliation(s)
- Ernesto Scoppola
- Institut Laue-Langevin, 38000, Grenoble, France.,Institut de Chimie Séparative de Marcoule, UMR 5257 CEA/CNRS/ENSCM/Université Montpellier, 30207, Bagnols-sur-Cèze, France
| | - Erik B Watkins
- Institut Laue-Langevin, 38000, Grenoble, France.,Materials Synthesis and Integrated Devices, Los Alamos National Laboratory, Los Alamos, NM, 87545, USA
| | | | - Oleg Konovalov
- European Synchrotron Radiation Facility, 38430, Grenoble, France
| | - Luc Girard
- Institut de Chimie Séparative de Marcoule, UMR 5257 CEA/CNRS/ENSCM/Université Montpellier, 30207, Bagnols-sur-Cèze, France
| | - Jean-Francois Dufrêche
- Institut de Chimie Séparative de Marcoule, UMR 5257 CEA/CNRS/ENSCM/Université Montpellier, 30207, Bagnols-sur-Cèze, France
| | | | | | - Olivier Diat
- Institut de Chimie Séparative de Marcoule, UMR 5257 CEA/CNRS/ENSCM/Université Montpellier, 30207, Bagnols-sur-Cèze, France.
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Fernandez R, Manzo F, Nardi FR, Scoppola E, Sohier J. Conditioned, quasi-stationary, restricted measures and escape from metastable states. ANN APPL PROBAB 2016. [DOI: 10.1214/15-aap1102] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Scoppola E, Watkins E, Li Destri G, Porcar L, Campbell RA, Konovalov O, Fragneto G, Diat O. Structure of a liquid/liquid interface during solvent extraction combining X-ray and neutron reflectivity measurements. Phys Chem Chem Phys 2015; 17:15093-7. [PMID: 25993438 DOI: 10.1039/c5cp01809a] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
We have resolved the molecular structure of a bulk oil/water interface that contains amphiphilic ligand molecules using a combination of X-ray and neutron reflectivity measurements for the first time. This new capability can greatly impact future work in the field of ion separation by phase transfer, i.e. liquid/liquid extraction.
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Affiliation(s)
- E Scoppola
- Institut Laue-Langevin, 71 avenue des Martyrs, F-38000 Grenoble, France
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Scoppola E, Sodo A, McLain SE, Ricci MA, Bruni F. Water-peptide site-specific interactions: a structural study on the hydration of glutathione. Biophys J 2014; 106:1701-9. [PMID: 24739169 DOI: 10.1016/j.bpj.2014.01.046] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2013] [Revised: 01/08/2014] [Accepted: 01/31/2014] [Indexed: 10/25/2022] Open
Abstract
Water-peptide interactions play an important role in determining peptide structure and function. Nevertheless, a microscopic description of these interactions is still incomplete. In this study we have investigated at the atomic scale length the interaction between water and the tripeptide glutathione. The rationale behind this work, based on the combination between a neutron diffraction experiment and a computer simulation, is twofold. It extends previous studies on amino acids, addressing issues such as the perturbation of the water network brought by a larger biomolecule in solution. In addition, and more importantly, it seeks a possible link between the atomic length scale description of the glutathione-water interaction with the specific biological functionality of glutathione, an important intracellular antioxidant. Results indicate a rather weak hydrogen bond between the thiol (-SH) group of cysteine and its first neighbor water molecule. This -SH group serves as a proton donor, is responsible for the biological activity of glutathione, and it is involved in the formation of glutathione disulfide, the oxidized form of glutathione. Moreover, the hydration shell of the chemically identical carboxylate group on the glutamic acid residue and on the glycine residue shows an intriguing different spatial location of water molecules and coordination numbers around the two CO2(-) groups.
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Affiliation(s)
- Ernesto Scoppola
- Dipartimento di Scienze, Università degli Studi di Roma Tre, Via della Vasca Navale 84, 00146 Roma, Italy
| | - Armida Sodo
- Dipartimento di Scienze, Università degli Studi di Roma Tre, Via della Vasca Navale 84, 00146 Roma, Italy
| | - Sylvia E McLain
- Department of Biochemistry, University of Oxford, South Park Road, Oxford, Oxfordshire OX1 3QU
| | - Maria Antonietta Ricci
- Dipartimento di Scienze, Università degli Studi di Roma Tre, Via della Vasca Navale 84, 00146 Roma, Italy
| | - Fabio Bruni
- Dipartimento di Scienze, Università degli Studi di Roma Tre, Via della Vasca Navale 84, 00146 Roma, Italy.
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Tudisca V, Bruni F, Scoppola E, Angelini R, Ruzicka B, Zulian L, Soper AK, Ricci MA. Neutron diffraction study of aqueous Laponite suspensions at the NIMROD diffractometer. Phys Rev E Stat Nonlin Soft Matter Phys 2014; 90:032301. [PMID: 25314440 DOI: 10.1103/physreve.90.032301] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2013] [Indexed: 06/04/2023]
Abstract
The process of dynamical arrest, leading to formation of different arrested states such as glasses and gels, along with the closely related process of aging, is central for both basic research and technology. Here we report on a study of the time-dependent structural evolution of two aqueous Laponite clay suspensions at different weight concentrations. Neutron diffraction experiments have been performed with the near and intermediate range order diffractometer (NIMROD) that allows studies of the structure of liquids and disordered materials over a continuous length scale ranging from 1 to 300 Å, i.e., from the atomistic to the mesoscopic scales. NIMROD is presently a unique diffractometer, bridging the length scales traditionally investigated by small angle neutron scattering or small angle x-ray scattering with that accessible by traditional diffractometers for liquids. Interestingly, we have unveiled a signature of aging of both suspensions in the length scale region of NIMROD. This phenomenon, ascribed to sporadic contacts between Laponite platelets at long times, has been observed with the sample arrested as gel or as repulsive glass. Moreover, water molecules within the layers closest to Laponite platelets surface show orientational and translational order, which maps into the crystalline structure of Laponite.
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Affiliation(s)
- V Tudisca
- Dipartimento di Scienze, Università degli Studi "Roma Tre", Via della Vasca Navale 84, 00146 Roma, Italy
| | - F Bruni
- Dipartimento di Scienze, Università degli Studi "Roma Tre", Via della Vasca Navale 84, 00146 Roma, Italy
| | - E Scoppola
- Dipartimento di Scienze, Università degli Studi "Roma Tre", Via della Vasca Navale 84, 00146 Roma, Italy
| | - R Angelini
- IPCF-CNR and Dipartimento di Fisica, Università di Roma "La Sapienza", Piazzale A. Moro 2, I-00185, Rome, Italy
| | - B Ruzicka
- IPCF-CNR and Dipartimento di Fisica, Università di Roma "La Sapienza", Piazzale A. Moro 2, I-00185, Rome, Italy
| | - L Zulian
- Dipartimento di Scienza dei Materiali, Università degli Studi Milano Bicocca, Via Roberto Cozzi, 53 20125 Milano, Italy
| | - A K Soper
- ISIS Facility, STFC Rutherford Appleton Laboratory, Harwell Oxford, Didcot, Oxfordshire, OX11 0QX, United Kingdom
| | - M A Ricci
- Dipartimento di Scienze, Università degli Studi "Roma Tre", Via della Vasca Navale 84, 00146 Roma, Italy
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Bellissard J, Grempel DR, Martinelli F, Scoppola E. Localization of electrons with spin-orbit or magnetic interactions in a two-dimensional disordered crystal. Phys Rev B Condens Matter 1986; 33:641-644. [PMID: 9937966 DOI: 10.1103/physrevb.33.641] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/11/2023]
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