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Paineau E, Bourdelle F, Bhandary R, Truche L, Lorgeoux C, Bacia-Verloop M, Monet G, Rouzière S, Vantelon D, Briois V, Launois P. Nonclassical Growth Mechanism of Double-Walled Metal-Oxide Nanotubes Implying Transient Single-Walled Structures. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2308665. [PMID: 38229562 DOI: 10.1002/smll.202308665] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/28/2023] [Revised: 12/01/2023] [Indexed: 01/18/2024]
Abstract
The formation of imogolite nanotubes is reported to be a kinetic process involving intermediate roof-tile nanostructures. Here, the structural evolution occurring during the synthesis of aluminogermanate double-walled imogolite nanotubes is in situ monitored, thanks to an instrumented autoclave allowing the control of the temperature, the continuous measurement of pH and pressure, and the regular sampling of gas and solution. Chemical analyses confirm the completion of the precursor's conversion with the release of CO2, ethanol, and dioxane as main side products. The combination of microscopic observations, infrared, and absorption spectroscopies with small and wide-angle X-ray scattering experiments unravel a unique growth mechanism implying transient single-walled nanotubes instead of the self-assembly of stacked proto-imogolite tiles. The growth formation of these transient nanotubes is followed at the molecular level by Quick-X-ray absoprtion specotrscopy experiments. Multivariate data analysis evidences that the near neighboring atomic environment of Ge evolves from monotonous to a more complex one as the reaction progresses. The following transformation into a double-walled nanotube takes place at a nearly constant mean radius, as demonstrated by the simulation of X-ray scattering diagrams. Overall, transient nanotubes appear to serve for the anchoring of a new wall, corresponding to a mechanism radically different from that proposed in the literature.
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Affiliation(s)
- Erwan Paineau
- CNRS, Laboratoire de Physique des Solides, Université Paris-Saclay, Orsay, 91405, France
| | - Franck Bourdelle
- GEC Laboratoire Géosciences & Environnement Cergy, CY Cergy Paris Université, Neuville-sur-Oise, 95000, France
| | - Rajesh Bhandary
- CNRS, Laboratoire de Physique des Solides, Université Paris-Saclay, Orsay, 91405, France
- Macromolecular Chemistry, Division of Technical and Macromolecular Chemistry, Institute of Chemistry, Faculty of Natural Science II (Chemistry, Physics and Mathematics), Martin Luther University Halle-Wittenberg, von-Danckelmann-Platz 4, D-06120, Halle, Germany
| | - Laurent Truche
- CNRS, ISTerre, University Grenoble Alpes, CS 40700, Grenoble, 38058, France
| | - Catherine Lorgeoux
- GeoRessources, UMR 7359 CNRS, Université de Lorraine, Campus Aiguillettes, Vandœuvre-lès-Nancy, 54506, France
| | - Maria Bacia-Verloop
- Institut de Biologie Structurale, CEA, CNRS, Université de Grenoble Alpes, Grenoble, 38027, France
| | - Geoffrey Monet
- CNRS, Laboratoire de Physique des Solides, Université Paris-Saclay, Orsay, 91405, France
- Laboratoire de Physique de l'Ecole Normale Supérieure, ENS, Université PSL, CNRS, Sorbonne Université, Université de Paris, Paris, F-75005, France
| | - Stéphan Rouzière
- CNRS, Laboratoire de Physique des Solides, Université Paris-Saclay, Orsay, 91405, France
| | - Delphine Vantelon
- Synchrotron SOLEIL, L'Orme des Merisiers, Gif-sur-Yvette, Cedex, 91192, France
| | - Valérie Briois
- Synchrotron SOLEIL, L'Orme des Merisiers, Gif-sur-Yvette, Cedex, 91192, France
| | - Pascale Launois
- CNRS, Laboratoire de Physique des Solides, Université Paris-Saclay, Orsay, 91405, France
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2
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Paineau E, Teobaldi G, Jiménez‐Calvo P. Imogolite Nanotubes and Their Permanently Polarized Bifunctional Surfaces for Photocatalytic Hydrogen Production. GLOBAL CHALLENGES (HOBOKEN, NJ) 2024; 8:2300255. [PMID: 38868604 PMCID: PMC11165560 DOI: 10.1002/gch2.202300255] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Revised: 11/17/2023] [Indexed: 06/14/2024]
Abstract
To date, imogolite nanotubes (INTs) have been primarily used for environmental applications such as dye and pollutant degradation. However, imogolite's well-defined porous structure and distinctive electro-optical properties have prompted interest in the system's potential for energy-relevant chemical reactions. The imogolite structure leads to a permanent intrawall polarization arising from the presence of bifunctional surfaces at the inner and outer tube walls. Density functional theory simulations suggest such bifunctionality to encompass also spatially separated band edges. Altogether, these elements make INTs appealing candidates for facilitating chemical conversion reactions. Despite their potential, the exploitation of imogolite's features for photocatalysis is at its infancy, thence relatively unexplored. This perspective overviews the basic physical-chemical and optoelectronical properties of imogolite nanotubes, emphasizing their role as wide bandgap insulator. Imogolite nanotubes have multifaceted properties that could lead to beneficial outcomes in energy-related applications. This work illustrates two case studies demonstrating a step-forward on photocatalytic hydrogen production achieved through atomic doping or metal co-catalyst. INTs exhibit potential in energy conversion and storage, due to their ability to accommodate functions such as enhancing charge separation and influencing the chemical potentials of interacting species. Yet, tapping into potential for energy-relevant application needs further experimental research, computational, and theoretical analysis.
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Affiliation(s)
- Erwan Paineau
- CNRSLaboratoire de Physique des SolidesUniversité Paris‐SaclayOrsay91405France
| | - Gilberto Teobaldi
- Scientific Computing DepartmentSTFC UKRIRutherford Appleton LaboratoryHarwell CampusDidcotOX11 0QXUK
| | - Pablo Jiménez‐Calvo
- Chair of Thin Film MaterialsIZNFFriedrich‐Alexander‐ Universität Erlangen‐NürnbergCauerstraße 391058ErlangenGermany
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3
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Sreedhara MB, Khadiev A, Zheng K, Hettler S, Serra M, Castelli IE, Arenal R, Novikov D, Tenne R. Nanotubes from Lanthanide-Based Misfit-Layered Compounds: Understanding the Growth, Thermodynamic, and Kinetic Stability Limits. CHEMISTRY OF MATERIALS : A PUBLICATION OF THE AMERICAN CHEMICAL SOCIETY 2024; 36:4736-4749. [PMID: 38770011 PMCID: PMC11104483 DOI: 10.1021/acs.chemmater.4c00481] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/21/2024] [Revised: 04/19/2024] [Accepted: 04/19/2024] [Indexed: 05/22/2024]
Abstract
Gaining insights into the kinetics and the thermodynamic limits of nanostructures in high-temperature reactions is crucial for controlling their unique morphology, phase, and structure. Nanotubes from lanthanide-based misfit-layered compounds (MLCs) have been known for more than a decade and were successfully produced mostly via a chemical vapor transport protocol. The MLC nanotubes show diverse structural arrangements and lattice disorders, which could have a salient impact on their properties. Though their structure and charge transfer properties are reasonably well understood, a lack of information on their thermodynamic and kinetic stability limits their scalable synthesis and their applicability in modern technologies. In this study, the growth, thermodynamic stability, and decomposition kinetics of lanthanide-based misfit nanotubes of two model compounds, i.e., (LaS)1.14TaS2 and (SmS)1.19TaS2 are elucidated in detail. The nanotubes were carefully analyzed via atomic resolution electron microscopy imaging and synchrotron-based X-ray and electron diffraction techniques, and the information on their morphology, phase, and structures was deduced. The key insights gained would help to establish the parameters to explore their physio-chemical properties further. Furthermore, this study sheds light on the complex issue of the high-temperature stability of nanotubes and nanostructures in general.
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Affiliation(s)
- M. B. Sreedhara
- Solid
State and Structural Chemistry Unit, Indian
Institute of Science, Bengaluru 560012, India
| | - Azat Khadiev
- Deutsches
Elektronen-Synchrotron DESY, Notkestr. 85, 22607 Hamburg, Germany
| | - Kai Zheng
- Department
of Energy Conversion and Storage, Technical
University of Denmark, DK-2800 Kgs. Lyngby, Denmark
| | - Simon Hettler
- Instituto
de Nanociencia y Materiales de Aragon (INMA), CSIC-Universidad de Zaragoza, 50018 Zaragoza, Spain
- Laboratorio
de Microscopias Avanzadas (LMA), Universidad
de Zaragoza, 50018 Zaragoza, Spain
| | - Marco Serra
- Dipartimento
di Scienze Chimiche e Geologiche, Università
di Modena e Reggio Emilia, Via G. Campi 103, 41125 Modena, Italy
| | - Ivano E. Castelli
- Department
of Energy Conversion and Storage, Technical
University of Denmark, DK-2800 Kgs. Lyngby, Denmark
| | - Raul Arenal
- Instituto
de Nanociencia y Materiales de Aragon (INMA), CSIC-Universidad de Zaragoza, 50018 Zaragoza, Spain
- Laboratorio
de Microscopias Avanzadas (LMA), Universidad
de Zaragoza, 50018 Zaragoza, Spain
- ARAID
Foundation, 50018 Zaragoza, Spain
| | - Dmitri Novikov
- Deutsches
Elektronen-Synchrotron DESY, Notkestr. 85, 22607 Hamburg, Germany
| | - Reshef Tenne
- Department
of Molecular Chemistry and Materials Science, Weizmann Institute of Science, Rehovot 7610001, Israel
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4
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Islam F, Zeng Q. Advances in Organosulfur-Based Polymers for Drug Delivery Systems. Polymers (Basel) 2024; 16:1207. [PMID: 38732676 PMCID: PMC11085353 DOI: 10.3390/polym16091207] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2023] [Revised: 02/07/2024] [Accepted: 04/10/2024] [Indexed: 05/13/2024] Open
Abstract
Organosulfur-based polymers have unique properties that make them useful for targeted and managed drug delivery, which can improve therapy while reducing side effects. This work aims to provide a brief review of the synthesis strategies, characterization techniques, and packages of organosulfur-based polymers in drug delivery. More importantly, this work discusses the characterization, biocompatibility, controlled release, nanotechnology, and targeted therapeutic aspects of these important structural units. This review provides not only a good comprehension of organosulfur-based polymers but also an insightful discussion of potential future prospectives in research. The discovery of novel organosulfur polymers and innovations is highly expected to be stimulated in order to synthesize polymer prototypes with increased functional accuracy, efficiency, and low cost for many industrial applications.
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Affiliation(s)
| | - Qingle Zeng
- College of Materials, Chemistry & Chemical Engineering, Chengdu University of Technology, Chengdu 610059, China
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Naciri Y, Ghazzal MN, Paineau E. Nanosized tubular clay minerals as inorganic nanoreactors for energy and environmental applications: A review to fill current knowledge gaps. Adv Colloid Interface Sci 2024; 326:103139. [PMID: 38552380 DOI: 10.1016/j.cis.2024.103139] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2023] [Revised: 03/08/2024] [Accepted: 03/24/2024] [Indexed: 04/13/2024]
Abstract
Modern society pays further and further attention to environmental protection and the promotion of sustainable energy solutions. Heterogeneous photocatalysis is widely recognized as one of the most economically viable and ecologically sound technologies to combat environmental pollution and the global energy crisis. One challenge is finding a suitable photocatalytic material for an efficient process. Inorganic nanotubes have garnered attention as potential candidates due to their optoelectronic properties, which differ from their bulk equivalents. Among them, clay nanotubes (halloysite, imogolite, and chrysotile) are attracting renewed interest for photocatalysis applications thanks to their low production costs, their unique physical and chemical properties, and the possibility to functionalize or dope their structure to enhance charge-carriers separation into their structure. In this review, we provide new insights into the potential of these inorganic nanotubes in photocatalysis. We first discuss the structural and morphological features of clay nanotubes. Applications of photocatalysts based on clay nanotubes across a range of photocatalytic reactions, including the decomposition of organic pollutants, elimination of NOx, production of hydrogen, and disinfection of bacteria, are discussed. Finally, we highlight the obstacles and outline potential avenues for advancing the current photocatalytic system based on clay nanotubes. Our aim is that this review can offer researchers new opportunities to advance further research in the field of clay nanotubes-based photocatalysis with other vital applications in the future.
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Affiliation(s)
- Yassine Naciri
- Université Paris-Saclay, CNRS, Laboratoire de Physique des Solides, Orsay 91405, France; Université Paris-Saclay, CNRS, UMR8000, Institut de Chimie Physique, Orsay 91405, France
| | - Mohamed Nawfal Ghazzal
- Université Paris-Saclay, CNRS, UMR8000, Institut de Chimie Physique, Orsay 91405, France.
| | - Erwan Paineau
- Université Paris-Saclay, CNRS, Laboratoire de Physique des Solides, Orsay 91405, France.
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6
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Wang JL, Zhao YF, Xu W, Zheng JD, Shao YP, Tong WY, Duan CG. Nanotube ferroelectric tunnel junctions with an ultrahigh tunneling electroresistance ratio. MATERIALS HORIZONS 2024; 11:1325-1333. [PMID: 38174937 DOI: 10.1039/d3mh02006a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/05/2024]
Abstract
Low-dimensional ferroelectric tunnel junctions are appealing for the realization of nanoscale nonvolatile memory devices due to their inherent advantages of device miniaturization. Those based on current mechanisms have limitations, including low tunneling electroresistance (TER) effects and complex heterostructures. Here, we introduce an entirely new TER mechanism to construct a nanotube ferroelectric tunnel junction with ferroelectric nanotubes as the tunneling region. When rolling a ferroelectric monolayer into a nanotube, due to the coexistence of its intrinsic ferroelectric polarization with the flexoelectric polarization induced by bending, a metal-insulator transition occurs depending on the radiative polarization states. For the pristine monolayer, its out-of-plane polarization is tunable by an in-plane electric field, and the conducting states of the ferroelectric nanotube can thus be tuned between metallic and insulating states via axial electric means. Using α-In2Se3 as an example, our first-principles density functional theory calculations and nonequilibrium Green's function formalism confirm the feasibility of the TER mechanism and indicate an ultrahigh TER ratio that exceeds 9.9 × 1010% of the proposed nanotube ferroelectric tunnel junctions. Our findings provide a promising approach based on simple homogeneous structures for high density ferroelectric microelectric devices with excellent ON/OFF performance.
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Affiliation(s)
- Jiu-Long Wang
- Key Laboratory of Polar Materials and Devices (MOE), Ministry of Education, Department of Electronics, East China Normal University, Shanghai, 200241, China.
- Shanghai Center of Brain-inspired Intelligent Materials and Devices, East China Normal University, Shanghai 200241, China
| | - Yi-Feng Zhao
- Key Laboratory of Polar Materials and Devices (MOE), Ministry of Education, Department of Electronics, East China Normal University, Shanghai, 200241, China.
- Shanghai Center of Brain-inspired Intelligent Materials and Devices, East China Normal University, Shanghai 200241, China
| | - Wen Xu
- Key Laboratory of Polar Materials and Devices (MOE), Ministry of Education, Department of Electronics, East China Normal University, Shanghai, 200241, China.
- Shanghai Center of Brain-inspired Intelligent Materials and Devices, East China Normal University, Shanghai 200241, China
| | - Jun-Ding Zheng
- Key Laboratory of Polar Materials and Devices (MOE), Ministry of Education, Department of Electronics, East China Normal University, Shanghai, 200241, China.
- Shanghai Center of Brain-inspired Intelligent Materials and Devices, East China Normal University, Shanghai 200241, China
| | - Ya-Ping Shao
- Key Laboratory of Polar Materials and Devices (MOE), Ministry of Education, Department of Electronics, East China Normal University, Shanghai, 200241, China.
- Shanghai Center of Brain-inspired Intelligent Materials and Devices, East China Normal University, Shanghai 200241, China
| | - Wen-Yi Tong
- Key Laboratory of Polar Materials and Devices (MOE), Ministry of Education, Department of Electronics, East China Normal University, Shanghai, 200241, China.
- Shanghai Center of Brain-inspired Intelligent Materials and Devices, East China Normal University, Shanghai 200241, China
| | - Chun-Gang Duan
- Key Laboratory of Polar Materials and Devices (MOE), Ministry of Education, Department of Electronics, East China Normal University, Shanghai, 200241, China.
- Shanghai Center of Brain-inspired Intelligent Materials and Devices, East China Normal University, Shanghai 200241, China
- Collaborative Innovation Center of Extreme Optics, Shanxi University Taiyuan, Shanxi 030006, China
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7
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Bhardwaj A, Suryanarayana P. Strain engineering of Zeeman and Rashba effects in transition metal dichalcogenide nanotubes and their Janus variants: an ab initiostudy. NANOTECHNOLOGY 2024; 35:185701. [PMID: 38271729 DOI: 10.1088/1361-6528/ad22b5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Accepted: 01/24/2024] [Indexed: 01/27/2024]
Abstract
We study the influence of mechanical deformations on the Zeeman and Rashba effects in transition metal dichalcogenide nanotubes and their Janus variants from first principles. In particular, we perform symmetry-adapted density functional theory simulations with spin-orbit coupling to determine the variation in the electronic band structure splittings with axial and torsional deformations. We find significant effects in molybdenum and tungsten nanotubes, for which the Zeeman splitting decreases with increase in strain, going to zero for large enough tensile/shear strains, while the Rashba splitting coefficient increases linearly with shear strain, while being zero for all tensile strains, a consequence of the inversion symmetry remaining unbroken. In addition, the Zeeman splitting is relatively unaffected by nanotube diameter, whereas the Rashba coefficient decreases with increase in diameter. Overall, mechanical deformations represent a powerful tool for spintronics in nanotubes.
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Affiliation(s)
- Arpit Bhardwaj
- College of Engineering, Georgia Institute of Technology, Atlanta, GA 30332, United States of America
| | - Phanish Suryanarayana
- College of Engineering, Georgia Institute of Technology, Atlanta, GA 30332, United States of America
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8
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Machida S. Deposition of silver nanoparticles on nanoscroll-supported inorganic solid using incompletely rolled-up kaolinite. RSC Adv 2023; 13:26430-26434. [PMID: 37671348 PMCID: PMC10476024 DOI: 10.1039/d3ra04383e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Accepted: 08/22/2023] [Indexed: 09/07/2023] Open
Abstract
Nanoscroll-supported platy particles were prepared by incomplete rolling-up of kaolinite layers; when the rolling-up of the kaolinite layer followed by its exfoliation incompletely proceeds, kaolinite nanoscrolls were found at the edge of kaolinite platy particles. To assess the support property of these nanoscroll-supported platy particles, when the deposition of Ag nanoparticles was conducted, these nanoparticles were present on the surface of platy particles and in the tubular interior of nanoscrolls at the edge of platy particles but absent on the surface of ordinal kaolinites, as revealed by X-ray diffraction, X-ray photoelectron spectroscopy, and transmission electron microscopy. These results indicated the successful formation and support property of nanoscroll-supported platy particles.
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Affiliation(s)
- Shingo Machida
- Department of Material Science and Technology, Faculty of Advanced Engineering, Tokyo University of Science 6-3-1 Niijuku, Katsushika-ku Tokyo 125-8585 Japan
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9
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Vogl LM, Schweizer P, Pethö L, Sharma A, Michler J, Utke I. From metal nanowires to ultrathin crystalline ALD nanotubes: process development and mechanism revealed by in situ TEM heating experiments. NANOSCALE 2023. [PMID: 37161753 DOI: 10.1039/d3nr01185b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
The creation of hollow nanomaterials based on metal oxides has become an important research topic, as they show potential in a broad range of technical applications. However, the controlled synthesis of long and at the same time thin nanotubes is still challenging. Here we present a universal approach to create ultrathin aluminum oxide nanotubes with a length/diameter ratio of >1200 and minimum wall thickness of ≤4 nm. We use a facile process based on defined heat treatment of specific core-shell nanowires. The metal nanowires act as a template, which is thermally removed during heat treatment until an empty tube is created. The core-shell nanowires are produced by Physical Vapour Deposition (PVD) with a subsequent coating via Atomic Layer Deposition (ALD). The custom-built PVD-ALD system enables a direct sample transfer without breaking the vacuum, which allows determining the effect of a native oxide layer on the metal-ALD bonding. In combination with correlative ex situ observations, in situ Transmission Electron Microscopy (TEM) heating experiments unravel the dynamical processes going on at small scales. Based on the microscopic analysis, the energetics of the core material is analyzed, giving insights about heat induced effects as well as the phase transition from the amorphous to the crystalline state.
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Affiliation(s)
- Lilian Maria Vogl
- Laboratory for Mechanics of Materials and Nanostructures, Empa-Swiss Federal Laboratories for Materials Science and Technology, Thun, Switzerland
| | - Peter Schweizer
- Laboratory for Mechanics of Materials and Nanostructures, Empa-Swiss Federal Laboratories for Materials Science and Technology, Thun, Switzerland
| | - Laszlo Pethö
- Laboratory for Mechanics of Materials and Nanostructures, Empa-Swiss Federal Laboratories for Materials Science and Technology, Thun, Switzerland
| | - Amit Sharma
- Laboratory for Mechanics of Materials and Nanostructures, Empa-Swiss Federal Laboratories for Materials Science and Technology, Thun, Switzerland
| | - Johann Michler
- Laboratory for Mechanics of Materials and Nanostructures, Empa-Swiss Federal Laboratories for Materials Science and Technology, Thun, Switzerland
| | - Ivo Utke
- Laboratory for Mechanics of Materials and Nanostructures, Empa-Swiss Federal Laboratories for Materials Science and Technology, Thun, Switzerland
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10
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Borghesi C, Marlotti GT, Canadell E, Giorgi G, Rurali R. Chirality Effects and Semiconductor versus Metallic Nature in Halide Nanotubes. THE JOURNAL OF PHYSICAL CHEMISTRY. C, NANOMATERIALS AND INTERFACES 2023; 127:7162-7171. [PMID: 37113456 PMCID: PMC10124746 DOI: 10.1021/acs.jpcc.3c00244] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Revised: 03/23/2023] [Indexed: 06/19/2023]
Abstract
A density functional theory study of the electronic structure of nanostructures based on the hexagonal layers of LuI3 is reported. Both bulk and slabs with one to three layers exhibit large and indirect bandgaps. Different families of nanotubes can be generated from these layers. Semiconducting nanotubes of two different chiralities have been studied. The direct or indirect nature of the optical gaps depends on the chirality, and a simple rationalization of this observation based on band folding arguments is provided. Remarkably, a metastable form of the armchair LuI3 nanotubes can be obtained under a structural rearrangement such that some iodine atoms are segregated toward the center of the nanotube forming chains of dimerized iodines. These nanotubes having an Lu2N I5N backbone are predicted to be metallic and should be immune toward a Peierls distortion. The iodine chains in the inner part of the nanotubes are weakly bound to the backbone so that it should be possible to remove these chains to generate a new series of neutral Lu2N I5N nanotubes which could exhibit interesting magnetic behavior. Because the LuI3 structure occurs for a large number of lanthanide and actinide trihalides, a tuning of the optical, transport, and probably magnetic properties of these new families of nanotubes can be a challenging prospect for future experimental studies.
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Affiliation(s)
- Costanza Borghesi
- Department
of Civil & Environmental Engineering (DICA), Università degli Studi di Perugia, Via G. Duranti 93, 06125 Perugia, Italy
| | - Giacomo Tanzi Marlotti
- Department
of Physics “Aldo Pontremoli”, Università degli Studi di Milano, Via Celoria 16, I-20133 Milano, Italy
- Institut
de Ciència de Materials de Barcelona, ICMAB−CSIC, Campus UAB, 08193 Bellaterra, Spain
| | - Enric Canadell
- Institut
de Ciència de Materials de Barcelona, ICMAB−CSIC, Campus UAB, 08193 Bellaterra, Spain
| | - Giacomo Giorgi
- Department
of Civil & Environmental Engineering (DICA), Università degli Studi di Perugia, Via G. Duranti 93, 06125 Perugia, Italy
- CIRIAF
- Interuniversity Research Centre, University
of Perugia, Via G. Duranti
93, 06125 Perugia, Italy
- CNR-SCITEC, 06123 Perugia, Italy
| | - Riccardo Rurali
- Institut
de Ciència de Materials de Barcelona, ICMAB−CSIC, Campus UAB, 08193 Bellaterra, Spain
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11
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Bellotto O, D'Andrea P, Marchesan S. Nanotubes and water-channels from self-assembling dipeptides. J Mater Chem B 2023. [PMID: 36790014 DOI: 10.1039/d2tb02643k] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
Abstract
Dipeptides are attractive building blocks for biomaterials in light of their inherent biocompatibility, biodegradability, and simplicity of preparation. Since the discovery of diphenylalanine (Phe-Phe) self-assembling ability into nanotubes, research efforts have been devoted towards the identification of other dipeptide sequences capable of forming these interesting nanomorphologies, although design rules towards nanotube formation are still elusive. In this review, we analyze the dipeptide sequences reported thus far for their ability to form nanotubes, which often feature water-filled supramolecular channels as revealed by single-crystal X-ray diffraction, as well as their properties, and their potential biological applications, which span from drug delivery and regenerative medicine, to bioelectronics and bioimaging.
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Affiliation(s)
- Ottavia Bellotto
- Chem. Pharm. Sc. Dept., University of Trieste, Via Giorgieri 1, 34127 Trieste, Italy.
| | - Paola D'Andrea
- Life Sc. Dept., University of Trieste, Via Weiss 2, 34128 Trieste, Italy
| | - Silvia Marchesan
- Chem. Pharm. Sc. Dept., University of Trieste, Via Giorgieri 1, 34127 Trieste, Italy. .,INSTM, Unit of Trieste, Via Giorgieri 1, 34127 Trieste, Italy
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12
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Bandura AV, Kuruch DD, Lukyanov SI, Evarestov RA. Quantum Chemical Simulation of Double-Walled Nanotubes Based on Gallium and Indium Chalcogenides. RUSS J INORG CHEM+ 2022. [DOI: 10.1134/s0036023622601970] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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13
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Ben-Shimon Y, Bhingardive V, Joselevich E, Ya'akobovitz A. Self-Sensing WS 2 Nanotube Torsional Resonators. NANO LETTERS 2022; 22:8025-8031. [PMID: 36095301 DOI: 10.1021/acs.nanolett.2c01422] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
We demonstrate self-sensing tungsten disulfide nanotube (WS2 NT) torsional resonators. These resonators exhibit all-electrical self-sensing operation with electrostatic excitation and piezoresistive motion detection. We show that the torsional motion of the WS2 NT resonators results in a change of the nanotube electrical resistance, with the most significant change around their mechanical resonance, where the amplitude of torsional vibrations is maximal. Atomic force microscopy analysis revealed the torsional and bending stiffness of the WS2 NTs, which we used for modeling the behavior of the WS2 NT devices. In addition, the solution of the electrostatic boundary value problem shows how the spatial potential and electrostatic field lines around the device impact its capacitance. The results uncover the coupling between the electrical and mechanical behaviors of WS2 and emphasize their potential to operate as key components in functional devices, such as nanosensors and radio frequency devices.
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Affiliation(s)
- Yahav Ben-Shimon
- Faculty of Engineering Sciences, Ben-Gurion University of the Negev, Beer-Sheva 8410501, Israel
| | - Viraj Bhingardive
- Department of Molecular Chemistry and Materials Science, Weizmann Institute of Science, Rehovot 76100, Israel
| | - Ernesto Joselevich
- Department of Molecular Chemistry and Materials Science, Weizmann Institute of Science, Rehovot 76100, Israel
| | - Assaf Ya'akobovitz
- Faculty of Engineering Sciences, Ben-Gurion University of the Negev, Beer-Sheva 8410501, Israel
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14
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Martin-Gassin G, Paineau E, Launois P, Gassin PM. Water Organization around Inorganic Nanotubes in Suspension Probed by Polarization-Resolved Second Harmonic Scattering. J Phys Chem Lett 2022; 13:6883-6888. [PMID: 35862242 DOI: 10.1021/acs.jpclett.2c01392] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Imogolite nanotube (INT) is a fascinating one-dimensional (1D) material that can be synthesized in the liquid phase. Its behavior in solution is crucial for many applications and depends on the organization of water at the liquid-wall interface. We study here this water organization by using the nonlinear optical technique of polarization-resolved second harmonic scattering (SHS). A microscopic model is proposed to interpret the origin of the coherent SHS signal recovered in this 1D colloidal system. This work demonstrates that the SHS technique is able to probe the shell of water molecules oriented around the nanotubes. Water organization results from the electric field induced by the nanotube walls, and it is strongly dependent on the ionic strength of the suspension.
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Affiliation(s)
| | - Erwan Paineau
- Université Paris-Saclay, CNRS, Laboratoire de Physique des Solides, 91405 Orsay, France
| | - Pascale Launois
- Université Paris-Saclay, CNRS, Laboratoire de Physique des Solides, 91405 Orsay, France
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15
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Roy KS, Hettler S, Arenal R, Panchakarla LS. Strontium-deficient Sr xCoO 2-CoO 2 nanotubes as a high ampacity and high conductivity material. MATERIALS HORIZONS 2022; 9:2115-2127. [PMID: 35766405 DOI: 10.1039/d1mh01987b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Continuous miniaturization of electronics demands the development of interconnectors with high ampacity and high conductivity, which conventional conductors such as copper and gold cannot offer. Here we report the synthesis of Sr-deficient misfit SrxCoO2-CoO2 nanotubes by a novel crystal conversion method and investigate their electrical properties. Bulk Sr6Co5O15 having a quasi-one-dimensional CoO6 polyhedral structure (face-sharing octahedron and trigonal prismatic CoO6 arranged in one-dimension) is converted to SrxCoO2-CoO2 nanotubes where CoO2 adopts a two-dimensional edge-sharing CoO2 layered structure in a basic hydrothermal process. Electrical properties measured on individual nanotubes demonstrate that these nanotubes are semiconducting with a conductivity of 1.28 × 104 S cm-1 and an ampacity of 109 A cm-2, which is the highest reported ampacity value to date of any inorganic oxide-based material. The nanotubes also show a breakdown power per unit channel length (P/L) of ∼38.3 W cm-1, the highest among the regularly used interconnect materials. The above results demonstrate that SrxCoO2-CoO2 nanotubes are potential building blocks for high-power electronic applications.
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Affiliation(s)
- Kankona Singha Roy
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai, 400076, India
| | - Simon Hettler
- Instituto de Nanociencia y Materiales de Aragon (INMA), CSIC-Universidad de Zaragoza, Calle Pedro Cerbuna 12, 50009 Zaragoza, Spain.
- Laboratorio de Microscopias Avanzadas (LMA), Universidad de Zaragoza, Calle Mariano Esquillor, 50018 Zaragoza, Spain
| | - Raul Arenal
- Instituto de Nanociencia y Materiales de Aragon (INMA), CSIC-Universidad de Zaragoza, Calle Pedro Cerbuna 12, 50009 Zaragoza, Spain.
- Laboratorio de Microscopias Avanzadas (LMA), Universidad de Zaragoza, Calle Mariano Esquillor, 50018 Zaragoza, Spain
- ARAID Foundation, 50018 Zaragoza, Spain
| | - Leela S Panchakarla
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai, 400076, India
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16
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Shevtsova T, Cavallaro G, Lazzara G, Milioto S, Donchak V, Harhay K, Korolko S, Budkowski A, Stetsyshyn Y. Temperature-responsive hybrid nanomaterials based on modified halloysite nanotubes uploaded with silver nanoparticles. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.128525] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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17
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Mendonça PSS, Dos Santos JR, de Oliveira OV, Dos Santos JD, Longo E. Single-walled silicon nanotube as an exceptional candidate to eliminate SARS-CoV-2: a theoretical study. J Biomol Struct Dyn 2022; 41:3042-3051. [PMID: 35220919 DOI: 10.1080/07391102.2022.2045220] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
In this work, computational chemistry methods were used to study a silicon nanotube (Si192H16) as possible virucidal activity against SARS-CoV-2. This virus is responsible for the COVID-19 disease. DFT calculations showed that the structural parameters of the Si192H16 nanotube are in agreement with the theoretical/experimental parameters reported in the literature. The low energy gap value (0.29 eV) shows that this nanotube is a semiconductor and exhibits high reactivity. For nanomaterials to be used as virucides, they need to have high reactivity and high inhibition constant values. Therefore, the adsorption of 3O2 and H2O on the surface of Si192H16 (Si192H16@O2-H2O) was performed. In this process, the formation and activation energies were -51.63 and 16.62 kcal/mol, respectively. Molecular docking calculations showed that the Si192H16 and Si192H16@O2H-OH nanotubes bind favorably on the receptor-binding domain of the SARS-CoV-2 spike protein with binding energy of -11.83 (Ki = 2.13 nM) and -11.13 (Ki = 6.99 nM) kcal/mol, respectively. Overall, the results obtained herein indicate that the Si192H16 nanotube is a potential candidate to be used against COVID-19 from reactivity process and/or steric impediment in the S-protein.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
| | - Jeziel Rodrigues Dos Santos
- LQTAM, Goiás State University, GO, Brazil.,Chemistry Department, CDMF, LIEC, Federal University of São Carlos, São Carlos, Brazil
| | - Osmair Vital de Oliveira
- Federal Institute of Education, Science and Technology of São Paulo, Catanduva Campus, Catanduva, SP, Brazil
| | | | - Elson Longo
- Chemistry Department, CDMF, LIEC, Federal University of São Carlos, São Carlos, Brazil
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18
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Sreedhara MB, Bukvišová K, Khadiev A, Citterberg D, Cohen H, Balema V, K. Pathak A, Novikov D, Leitus G, Kaplan-Ashiri I, Kolíbal M, Enyashin AN, Houben L, Tenne R. Nanotubes from the Misfit Layered Compound (SmS) 1.19TaS 2: Atomic Structure, Charge Transfer, and Electrical Properties. CHEMISTRY OF MATERIALS : A PUBLICATION OF THE AMERICAN CHEMICAL SOCIETY 2022; 34:1838-1853. [PMID: 35237027 PMCID: PMC8874355 DOI: 10.1021/acs.chemmater.1c04106] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Revised: 01/16/2022] [Indexed: 05/08/2023]
Abstract
Misfit layered compounds (MLCs) MX-TX2, where M, T = metal atoms and X = S, Se, or Te, and their nanotubes are of significant interest due to their rich chemistry and unique quasi-1D structure. In particular, LnX-TX2 (Ln = rare-earth atom) constitute a relatively large family of MLCs, from which nanotubes have been synthesized. The properties of MLCs can be tuned by the chemical and structural interplay between LnX and TX2 sublayers and alloying of each of the Ln, T, and X elements. In order to engineer them to gain desirable performance, a detailed understanding of their complex structure is indispensable. MLC nanotubes are a relative newcomer and offer new opportunities. In particular, like WS2 nanotubes before, the confinement of the free carriers in these quasi-1D nanostructures and their chiral nature offer intriguing physical behavior. High-resolution transmission electron microscopy in conjunction with a focused ion beam are engaged to study SmS-TaS2 nanotubes and their cross-sections at the atomic scale. The atomic resolution images distinctly reveal that Ta is in trigonal prismatic coordination with S atoms in a hexagonal structure. Furthermore, the position of the sulfur atoms in both the SmS and the TaS2 sublattices is revealed. X-ray photoelectron spectroscopy, electron energy loss spectroscopy, and X-ray absorption spectroscopy are carried out. These analyses conclude that charge transfer from the Sm to the Ta atoms leads to filling of the Ta 5d z 2 level, which is confirmed by density functional theory (DFT) calculations. Transport measurements show that the nanotubes are semimetallic with resistivities in the range of 10-4 Ω·cm at room temperature, and magnetic susceptibility measurements show a superconducting transition at 4 K.
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Affiliation(s)
- M. B. Sreedhara
- Department
of Molecular Chemistry and Materials Science, Weizmann Institute of Science, Rehovot 7610001, Israel
| | - Kristýna Bukvišová
- CEITEC
− Central European Institute of Technology, Brno University of Technology, Purkyňova 123, 612 00 Brno, Czech Republic
| | - Azat Khadiev
- Deutsches
Elektronen-Synchrotron DESY, Notkestr. 85, 22607 Hamburg, Germany
| | - Daniel Citterberg
- CEITEC
− Central European Institute of Technology, Brno University of Technology, Purkyňova 123, 612 00 Brno, Czech Republic
| | - Hagai Cohen
- Department
of Chemical Research Support, Weizmann Institute, Rehovot 7610001, Israel
| | - Viktor Balema
- Ames
Laboratory, U.S. Department of Energy, Ames, Iowa 50011-3020, United States
- ProChem,
Inc., 826 Roosevelt Road, Rockford, Illinois 61109, United States
| | - Arjun K. Pathak
- Department
of Physics, SUNY Buffalo State, Buffalo, New York 14222, United States
| | - Dmitri Novikov
- Deutsches
Elektronen-Synchrotron DESY, Notkestr. 85, 22607 Hamburg, Germany
| | - Gregory Leitus
- Department
of Chemical Research Support, Weizmann Institute, Rehovot 7610001, Israel
| | - Ifat Kaplan-Ashiri
- Department
of Chemical Research Support, Weizmann Institute, Rehovot 7610001, Israel
| | - Miroslav Kolíbal
- CEITEC
− Central European Institute of Technology, Brno University of Technology, Purkyňova 123, 612 00 Brno, Czech Republic
- Institute
of Physical Engineering, Brno University
of Technology, Technická 2, 616 69 Brno, Czech Republic
| | - Andrey N. Enyashin
- Institute
of Solid State Chemistry UB RAS, 620990 Ekaterinburg, Russian Federation
- Institute
of Natural Sciences and Mathematics, Ural
Federal University, 620083 Ekaterinburg, Russian Federation
| | - Lothar Houben
- Department
of Chemical Research Support, Weizmann Institute, Rehovot 7610001, Israel
| | - Reshef Tenne
- Department
of Molecular Chemistry and Materials Science, Weizmann Institute of Science, Rehovot 7610001, Israel
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19
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Kierkowicz M, Pach E, Fraile J, Domingo C, Ballesteros B, Tobias G. The Role of Temperature on the Degree of End-Closing and Filling of Single-Walled Carbon Nanotubes. NANOMATERIALS (BASEL, SWITZERLAND) 2021; 11:3365. [PMID: 34947714 PMCID: PMC8704686 DOI: 10.3390/nano11123365] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Revised: 11/26/2021] [Accepted: 12/02/2021] [Indexed: 11/17/2022]
Abstract
Carbon nanotubes (CNTs), owing to their high surface area-to-volume ratio and hollow core, can be employed as hosts for adsorbed and/or encapsulated molecules. At high temperatures, the ends of CNTs close spontaneously, which is relevant for several applications, including catalysis, gas storage, and biomedical imaging and therapy. This study highlights the influence of the annealing temperature in the range between 400 and 1100 °C on the structure and morphology of single-walled CNTs. The nitrogen adsorption and density functional theory calculations indicate that the fraction of end-closed CNTs increases with temperature. Raman spectroscopy reveals that the thermal treatment does not alter the tubular structure. Insight is also provided into the efficacy of CNTs filling from the molten phase, depending on the annealing temperature. The CNTs are filled with europium (III) chloride and analyzed by using electron microscopy (scanning electron microscopy and high-resolution transmission electron microscopy) and energy-dispersive X-ray spectroscopy, confirming the presence of filling and closed ends. The filling yield increases with temperature, as determined by thermogravimetric analysis. The obtained results show that the apparent surface area of CNTs, fraction of closed ends, and amount of encapsulated payload can be tailored via annealing.
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Affiliation(s)
- Magdalena Kierkowicz
- Institut de Ciència de Materials de Barcelona (ICMAB-CSIC), Campus UAB, Bellaterra, 08193 Barcelona, Spain; (M.K.); (J.F.); (C.D.)
| | - Elzbieta Pach
- Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and the Barcelona Institute of Science and Technology, Campus UAB, Bellaterra, 08193 Barcelona, Spain; (E.P.); (B.B.)
| | - Julio Fraile
- Institut de Ciència de Materials de Barcelona (ICMAB-CSIC), Campus UAB, Bellaterra, 08193 Barcelona, Spain; (M.K.); (J.F.); (C.D.)
| | - Concepción Domingo
- Institut de Ciència de Materials de Barcelona (ICMAB-CSIC), Campus UAB, Bellaterra, 08193 Barcelona, Spain; (M.K.); (J.F.); (C.D.)
| | - Belén Ballesteros
- Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and the Barcelona Institute of Science and Technology, Campus UAB, Bellaterra, 08193 Barcelona, Spain; (E.P.); (B.B.)
| | - Gerard Tobias
- Institut de Ciència de Materials de Barcelona (ICMAB-CSIC), Campus UAB, Bellaterra, 08193 Barcelona, Spain; (M.K.); (J.F.); (C.D.)
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20
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Stolovas D, Popovitz‐Biro R, Sinha SS, Bitton O, Shahar D, Tenne R, Joselevich E. Electrical Properties of LaS‐TaS
2
Misfit Layered Compound Nanotubes. Isr J Chem 2021. [DOI: 10.1002/ijch.202100072] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Dalit Stolovas
- Department of Materials and Interfaces Weizmann Institute Rehovot 76100 Israel
- Current address: Schulich School of Chemistry the Technion 32000 Haifa Israel
| | - Ronit Popovitz‐Biro
- Department of Materials and Interfaces Weizmann Institute Rehovot 76100 Israel
| | - Sudarson S. Sinha
- Department of Materials and Interfaces Weizmann Institute Rehovot 76100 Israel
| | - Ora Bitton
- Department of Chemical Research Support Weizmann Institute Rehovot 76100 Israel
| | - Dan Shahar
- Department of Condensed Matter Physics Weizmann Institute Rehovot 76100 Israel
| | - Reshef Tenne
- Department of Materials and Interfaces Weizmann Institute Rehovot 76100 Israel
| | - Ernesto Joselevich
- Department of Materials and Interfaces Weizmann Institute Rehovot 76100 Israel
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21
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Cambré S, Liu M, Levshov D, Otsuka K, Maruyama S, Xiang R. Nanotube-Based 1D Heterostructures Coupled by van der Waals Forces. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2021; 17:e2102585. [PMID: 34355517 DOI: 10.1002/smll.202102585] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/01/2021] [Revised: 07/19/2021] [Indexed: 06/13/2023]
Abstract
1D van der Waals heterostructures based on carbon nanotube templates are raising a lot of excitement due to the possibility of creating new optical and electronic properties, by either confining molecules inside their hollow core or by adding layers on the outside of the nanotube. In contrast to their 2D analogs, where the number of layers, atomic type and relative orientation of the constituting layers are the main parameters defining physical properties, 1D heterostructures provide an additional degree of freedom, i.e., their specific diameter and chiral structure, for engineering their characteristics. The current state-of-the-art in synthesizing 1D heterostructures are discussed here, in particular focusing on their resulting optical properties, and details the vast parameter space that can be used to design heterostructures with custom-built properties that can be integrated into a large variety of applications. First, the effects of van der Waals coupling on the properties of the simplest and best-studied 1D heterostructure, namely a double-walled carbon nanotube, are described, and then heterostructures built from the inside and the outside are considered, which all use a nanotube as a template, and, finally, an outlook is provided for the future of this research field.
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Affiliation(s)
- Sofie Cambré
- Nanostructured and Organic Optical and Electronic Materials, Department of Physics, University of Antwerp, Antwerp 2610, Belgium
| | - Ming Liu
- Department of Mechanical Engineering, The University of Tokyo, Tokyo, 113-8656, Japan
| | - Dmitry Levshov
- Nanostructured and Organic Optical and Electronic Materials, Department of Physics, University of Antwerp, Antwerp 2610, Belgium
| | - Keigo Otsuka
- Department of Mechanical Engineering, The University of Tokyo, Tokyo, 113-8656, Japan
| | - Shigeo Maruyama
- Department of Mechanical Engineering, The University of Tokyo, Tokyo, 113-8656, Japan
| | - Rong Xiang
- Department of Mechanical Engineering, The University of Tokyo, Tokyo, 113-8656, Japan
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22
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Bhardwaj A, Sharma A, Suryanarayana P. Torsional strain engineering of transition metal dichalcogenide nanotubes: an ab initiostudy. NANOTECHNOLOGY 2021; 32:47LT01. [PMID: 34348245 DOI: 10.1088/1361-6528/ac1a90] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/17/2021] [Accepted: 08/03/2021] [Indexed: 06/13/2023]
Abstract
We study the effect of torsional deformations on the electronic properties of single-walled transition metal dichalcogenide (TMD) nanotubes. In particular, considering forty-five select armchair and zigzag TMD nanotubes, we perform symmetry-adapted Kohn-Sham density functional theory calculations to determine the variation in bandgap and effective mass of charge carriers with twist. We find that metallic nanotubes remain so even after deformation, whereas semiconducting nanotubes experience a decrease in bandgap with twist-originally direct bandgaps become indirect-resulting in semiconductor to metal transitions. In addition, the effective mass of holes and electrons continuously decrease and increase with twist, respectively, resulting in n-type to p-type semiconductor transitions. We find that this behavior is likely due to rehybridization of orbitals in the metal and chalcogen atoms, rather than charge transfer between them. Overall, torsional deformations represent a powerful avenue to engineer the electronic properties of semiconducting TMD nanotubes, with applications to devices like sensors and semiconductor switches.
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Affiliation(s)
- Arpit Bhardwaj
- College of Engineering, Georgia Institute of Technology, Atlanta, GA 30332, United States of America
| | - Abhiraj Sharma
- College of Engineering, Georgia Institute of Technology, Atlanta, GA 30332, United States of America
| | - Phanish Suryanarayana
- College of Engineering, Georgia Institute of Technology, Atlanta, GA 30332, United States of America
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23
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Shelef Y, Uzan AY, Braunshtein O, Bar-On B. Assessing the Interfacial Dynamic Modulus of Biological Composites. MATERIALS (BASEL, SWITZERLAND) 2021; 14:3428. [PMID: 34205605 PMCID: PMC8234923 DOI: 10.3390/ma14123428] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/11/2021] [Revised: 06/09/2021] [Accepted: 06/16/2021] [Indexed: 11/17/2022]
Abstract
Biological composites (biocomposites) possess ultra-thin, irregular-shaped, energy dissipating interfacial regions that grant them crucial mechanical capabilities. Identifying the dynamic (viscoelastic) modulus of these interfacial regions is considered to be the key toward understanding the underlying structure-function relationships in various load-bearing biological materials including mollusk shells, arthropod cuticles, and plant parts. However, due to the submicron dimensions and the confined locations of these interfacial regions within the biocomposite, assessing their mechanical characteristics directly with experiments is nearly impossible. Here, we employ composite-mechanics modeling, analytical formulations, and numerical simulations to establish a theoretical framework that links the interfacial dynamic modulus of a biocomposite to the extrinsic characteristics of a larger-scale biocomposite segment. Accordingly, we introduce a methodology that enables back-calculating (via simple linear scaling) of the interfacial dynamic modulus of biocomposites from their far-field dynamic mechanical analysis. We demonstrate its usage on zigzag-shaped interfaces that are abundant in biocomposites. Our theoretical framework and methodological approach are applicable to the vast range of biocomposites in natural materials; its essence can be directly employed or generally adapted into analogous composite systems, such as architected nanocomposites, biomedical composites, and bioinspired materials.
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Affiliation(s)
- Yaniv Shelef
- Department of Mechanical Engineering, Ben-Gurion University of the Negev, Beer Sheva 84105, Israel; (Y.S.); (A.Y.U.); (O.B.)
| | - Avihai Yosef Uzan
- Department of Mechanical Engineering, Ben-Gurion University of the Negev, Beer Sheva 84105, Israel; (Y.S.); (A.Y.U.); (O.B.)
| | - Ofer Braunshtein
- Department of Mechanical Engineering, Ben-Gurion University of the Negev, Beer Sheva 84105, Israel; (Y.S.); (A.Y.U.); (O.B.)
- Nuclear Research Center-Negev, P.O. Box 9001, Beer-Sheva 84190, Israel
| | - Benny Bar-On
- Department of Mechanical Engineering, Ben-Gurion University of the Negev, Beer Sheva 84105, Israel; (Y.S.); (A.Y.U.); (O.B.)
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24
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Bhardwaj A, Sharma A, Suryanarayana P. Torsional moduli of transition metal dichalcogenide nanotubes from first principles. NANOTECHNOLOGY 2021; 32:28LT02. [PMID: 33827066 DOI: 10.1088/1361-6528/abf59c] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/15/2021] [Accepted: 04/07/2021] [Indexed: 06/12/2023]
Abstract
We calculate the torsional moduli of single-walled transition metal dichalcogenide (TMD) nanotubes usingab initiodensity functional theory (DFT). Specifically, considering forty-five select TMD nanotubes, we perform symmetry-adapted DFT calculations to calculate the torsional moduli for the armchair and zigzag variants of these materials in the low-twist regime and at practically relevant diameters. We find that the torsional moduli follow the trend: MS2> MSe2> MTe2. In addition, the moduli display a power law dependence on diameter, with the scaling generally close to cubic, as predicted by the isotropic elastic continuum model. In particular, the shear moduli so computed are in good agreement with those predicted by the isotropic relation in terms of the Young's modulus and Poisson's ratio, both of which are also calculated using symmetry-adapted DFT. Finally, we develop a linear regression model for the torsional moduli of TMD nanotubes based on the nature/characteristics of the metal-chalcogen bond, and show that it is capable of making reasonably accurate predictions.
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Affiliation(s)
- Arpit Bhardwaj
- College of Engineering, Georgia Institute of Technology, Atlanta, GA 30332, United States of America
| | - Abhiraj Sharma
- College of Engineering, Georgia Institute of Technology, Atlanta, GA 30332, United States of America
| | - Phanish Suryanarayana
- College of Engineering, Georgia Institute of Technology, Atlanta, GA 30332, United States of America
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25
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Zare H, Ahmadi S, Ghasemi A, Ghanbari M, Rabiee N, Bagherzadeh M, Karimi M, Webster TJ, Hamblin MR, Mostafavi E. Carbon Nanotubes: Smart Drug/Gene Delivery Carriers. Int J Nanomedicine 2021; 16:1681-1706. [PMID: 33688185 PMCID: PMC7936533 DOI: 10.2147/ijn.s299448] [Citation(s) in RCA: 105] [Impact Index Per Article: 35.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2020] [Accepted: 01/28/2021] [Indexed: 12/21/2022] Open
Abstract
The unique properties of carbon nanotubes (CNTs) (such as their high surface to volume ratios, enhanced conductivity and strength, biocompatibility, ease of functionalization, optical properties, etc.) have led to their consideration to serve as novel drug and gene delivery carriers. CNTs are effectively taken up by many different cell types through several mechanisms. CNTs have acted as carriers of anticancer molecules (including docetaxel (DTX), doxorubicin (DOX), methotrexate (MTX), paclitaxel (PTX), and gemcitabine (GEM)), anti-inflammatory drugs, osteogenic dexamethasone (DEX) steroids, etc. In addition, the unique optical properties of CNTs have led to their use in a number of platforms for improved photo-therapy. Further, the easy surface functionalization of CNTs has prompted their use to deliver different genes, such as plasmid DNA (PDNA), micro-RNA (miRNA), and small interfering RNA (siRNA) as gene delivery vectors for various diseases such as cancers. However, despite all of these promises, the most important continuous concerns raised by scientists reside in CNT nanotoxicology and the environmental effects of CNTs, mostly because of their non-biodegradable state. Despite a lack of widespread FDA approval, CNTs have been studied for decades and plenty of in vivo and in vitro reports have been published, which are reviewed here. Lastly, this review covers the future research necessary for the field of CNT medicine to grow even further.
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Affiliation(s)
- Hossein Zare
- Advances Nanobiotechnology and Nanomedicine Research Group (ANNRG), Iran University of Medical Sciences, Tehran, Iran
- Biomaterials Group, Materials Science and Engineering Department, Iran University of Science and Technology, Tehran, Iran
| | - Sepideh Ahmadi
- Student Research Committee, Department of Medical Biotechnology, School of Advanced Technologies in Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
- Cellular and Molecular Biology Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Amir Ghasemi
- Department of Engineering, Durham University, Durham, DH1 3LE, United Kingdom
| | - Mohammad Ghanbari
- School of Metallurgy and Materials Engineering, University of Tehran, Tehran, Iran
| | - Navid Rabiee
- Department of Chemistry, Sharif University of Technology, Tehran, Iran
| | | | - Mahdi Karimi
- Cellular and Molecular Research Center, Iran University of Medical Sciences, Tehran, Iran
- Department of Medical Nanotechnology, Faculty of Advanced Technologies in Medicine, Iran University of Medical Sciences, Tehran, Iran
- Oncopathology Research Center, Iran University of Medical Sciences, Tehran, Iran
- Research Center for Science and Technology in Medicine, Tehran University of Medical Sciences, Tehran, MA, Iran
| | - Thomas J Webster
- Applied Biotechnology Research Centre, Tehran Medical Science, Islamic Azad University, Tehran, MA, Iran
| | - Michael R Hamblin
- Laser Research Centre, Faculty of Health Science, University of Johannesburg, Doornfontein, 2028, South Africa
| | - Ebrahim Mostafavi
- Applied Biotechnology Research Centre, Tehran Medical Science, Islamic Azad University, Tehran, MA, Iran
- Stanford Cardiovascular Institute, Stanford, CA, USA
- Department of Medicine, Stanford University School of Medicine, Stanford, CA, USA
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26
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Shalom H, Bendikov T, Feldman Y, Lachman N, Zak A, Tenne R. Chemical control of the surface of WS2 nanoparticles. Chem Phys Lett 2020. [DOI: 10.1016/j.cplett.2020.138052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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27
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Shelef Y, Bar-On B. Interfacial indentations in biological composites. J Mech Behav Biomed Mater 2020; 114:104209. [PMID: 33309000 DOI: 10.1016/j.jmbbm.2020.104209] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2020] [Revised: 11/02/2020] [Accepted: 11/11/2020] [Indexed: 10/23/2022]
Abstract
Biocomposites comprise highly stiff reinforcement elements connected by a compliant matrix material. While the interfacial elastic properties of these biocomposites play a key role in determining the mechanical properties of the entire biocomposite, these properties cannot be measured directly from standard nanomechanical experiments. Developing a method for extracting the interfacial elastic properties in biocomposites is, therefore, a major objective of cutting-edge biomaterials science. Here, using mechanical modeling and Finite-Element simulations, we analyze the interfacial force-depth relationships, stress distribution, and indentation modulus of standard nanoindentation testing in biocomposites, and we establish an analytical framework that connects these results to the elastic properties of the underlying matrix and reinforcement components. The resulting analytical framework is general and holds for a broad range of biocomposites, thus enabling a deeper understanding of the mechanical characteristics of functional interfaces in various biomaterials. Moreover, this framework can be adapted to account for synthetic, microscale, and nanoscale composite materials, and thereby promotes the development of advanced interfacial configurations with specialized mechanical capabilities.
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Affiliation(s)
- Yaniv Shelef
- Department of Mechanical Engineering, Ben-Gurion University of the Negev, Beer Sheva, 84105, Israel
| | - Benny Bar-On
- Department of Mechanical Engineering, Ben-Gurion University of the Negev, Beer Sheva, 84105, Israel.
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28
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Schaffter SW, Schneider J, Agrawal DK, Pacella MS, Rothchild E, Murphy T, Schulman R. Reconfiguring DNA Nanotube Architectures via Selective Regulation of Terminating Structures. ACS NANO 2020; 14:13451-13462. [PMID: 33048538 DOI: 10.1021/acsnano.0c05340] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Molecular assemblies inside cells often undergo structural reconfiguration in response to stimuli to alter their function. Adaptive reconfiguration of cytoskeletal networks, for example, enables cellular shape change, movement, and cargo transport and plays a key role in driving complex processes such as division and differentiation. The cellular cytoskeleton is a self-assembling polymer network composed of simple filaments, so reconfiguration often occurs through the rearrangement of its component filaments' connectivities. DNA nanotubes have emerged as promising building blocks for constructing programmable synthetic analogs of cytoskeletal networks. Nucleating seeds can control when and where nanotubes grow, and capping structures can bind nanotube ends to stop growth. Such seeding and capping structures, collectively called termini, can organize nanotubes into larger architectures. However, these structures cannot be selectively activated or inactivated in response to specific stimuli to rearrange nanotube architectures, a key property of cytoskeletal networks. Here, we demonstrate how selective regulation of the binding affinity of DNA nanotube termini for DNA nanotube monomers or nanotube ends can direct the reconfiguration of nanotube architectures. Using DNA hybridization and strand displacement reactions that specifically activate or inactivate four orthogonal nanotube termini, we demonstrate that nanotube architectures can be reconfigured by selective addition or removal of distinct termini. Finally, we show how terminus activation could be a sensitive detector and amplifier of a DNA sequence signal. These results could enable the development of adaptive and multifunctional materials or diagnostic tools.
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Affiliation(s)
- Samuel W Schaffter
- Chemical and Biomolecular Engineering, Johns Hopkins University, Baltimore, Maryland 21218, United States
| | - Joanna Schneider
- Chemical and Biomolecular Engineering, Johns Hopkins University, Baltimore, Maryland 21218, United States
| | - Deepak K Agrawal
- Chemical and Biomolecular Engineering, Johns Hopkins University, Baltimore, Maryland 21218, United States
| | - Michael S Pacella
- Chemical and Biomolecular Engineering, Johns Hopkins University, Baltimore, Maryland 21218, United States
| | - Eric Rothchild
- Material Science and Engineering, Johns Hopkins University, Baltimore, Maryland 21218, United States
| | - Terence Murphy
- Our Lady of Lourdes High School, Poughkeepsie, New York 12603, United States
| | - Rebecca Schulman
- Chemical and Biomolecular Engineering, Johns Hopkins University, Baltimore, Maryland 21218, United States
- Computer Science, Johns Hopkins University, Baltimore, Maryland 21218, United States
- Chemistry, Johns Hopkins University, Baltimore, Maryland 21218, United States
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29
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Stroyuk O, Raievska O, Zahn DRT. Graphitic carbon nitride nanotubes: a new material for emerging applications. RSC Adv 2020; 10:34059-34087. [PMID: 35519070 PMCID: PMC9056768 DOI: 10.1039/d0ra05580h] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2020] [Accepted: 08/03/2020] [Indexed: 01/06/2023] Open
Abstract
We provide a critical review of the current state of the synthesis and applications of nano- and micro-tubes of layered graphitic carbon nitride. This emerging material has a huge potential for light-harvesting applications, including light sensing, artificial photosynthesis, selective photocatalysis, hydrogen storage, light-induced motion, membrane technologies, and can become a major competitor for such established materials as carbon and titania dioxide nanotubes. Graphitic carbon nitride tubes (GCNTs) combine visible-light sensitivity, high charge carrier mobility, and exceptional chemical/photochemical stability, imparting this material with unrivaled photocatalytic activities in photosynthetic processes, such as water splitting and carbon dioxide reduction. The unique geometric GCNT structure and versatility of possible chemical modifications allow new photocatalytic applications of GCNTs to be envisaged including selective photocatalysts of multi-electron processes as well as light-induced and light-directed motion of GCNT-based microswimmers. Closely-packed arrays of aligned GCNTs show great promise as multifunctional membrane materials for the light energy conversion and storage, light-driven pumping of liquids, selective adsorption, and electrochemical applications. These emerging applications require synthetic routes to GCNTs with highly controlled morphological parameters and composition to be available. We recognize three major strategies for the GCNT synthesis including templating, supramolecular assembling of precursors, and scrolling of nano-/microsheets, and outline promising routes for further progress of these approaches in the light of the most important emerging applications of GCNTs.
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Affiliation(s)
- Oleksandr Stroyuk
- Forschungszentrum Jülich GmbH, Helmholtz-Institut Erlangen Nürnberg für Erneuerbare Energien (HI ERN) Immerwahrstr. 2 91058 Erlangen Germany
- L.V. Pysarzhevsky Institute of Physical Chemistry, Nat. Acad. of Science of Ukraine 03028 Kyiv Ukraine
| | - Oleksandra Raievska
- L.V. Pysarzhevsky Institute of Physical Chemistry, Nat. Acad. of Science of Ukraine 03028 Kyiv Ukraine
- Semiconductor Physics, Chemnitz University of Technology D-09107 Chemnitz Germany
- Center for Materials, Architectures, and Integration of Nanomembranes (MAIN), Chemnitz University of Technology D-09107 Chemnitz Germany
| | - Dietrich R T Zahn
- Semiconductor Physics, Chemnitz University of Technology D-09107 Chemnitz Germany
- Center for Materials, Architectures, and Integration of Nanomembranes (MAIN), Chemnitz University of Technology D-09107 Chemnitz Germany
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30
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Wang Y, Zhu X. Nanofabrication within unimolecular nanoreactors. NANOSCALE 2020; 12:12698-12711. [PMID: 32525189 DOI: 10.1039/d0nr02674c] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Nanoparticles (NPs) have been a research focus over the last three decades owing to their unique properties and extensive applications. It is crucial to precisely control the features of NPs including topology, architecture, composition, size, surface and assembly because these features will affect their properties and then applications. Ingenious nanofabrication strategies have been developed to precisely control these features of NPs, especially for templated nanofabrication within predesigned nanoreactors. Compared with conventional nanoreactors (hard templates and supramolecular nanoreactors), unimolecular nanoreactors exhibit (1) covalently stable nanostructures uninfluenced by environmental variations, (2) extensively regulated features of the structure including topology, composition, size, surface and valence due to the rapid development of polymer chemistry, and (3) effective encapsulation of abundant guests with or without strong interaction to achieve the function of loading, delivery and conversion of guests. Thus, unimolecular nanoreactors have shown fascinating prospects as templates for nanofabrication. Various NPs with expected topologies (sphere, rod, tube, branch, and ring), architectures (compact, hollow, core-shell, and necklace-like), compositions (metal, metal oxide, semiconductor, doping, alloy, silica, and composite), sizes (generally 1-100 nm), surface properties (hydrophilic, hydrophobic, reactivity, valence and responsivity) and assemblies (oligomer, chain, and aggregate) can be fabricated easily within reasonably designed unimolecular nanoreactors in a programmable way. In this review, we provide a brief introduction of the properties and types of unimolecular nanoreactors, a condensed summary of representative methodologies of nanofabrication within various unimolecular nanoreactors and a predicted outlook of the potential further developments of this charming nanofabrication approach.
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Affiliation(s)
- Youfu Wang
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, People's Republic of China.
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31
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Hettler S, Sreedhara MB, Serra M, Sinha SS, Popovitz-Biro R, Pinkas I, Enyashin AN, Tenne R, Arenal R. YS-TaS 2 and Y xLa 1-xS-TaS 2 (0 ≤ x ≤ 1) Nanotubes: A Family of Misfit Layered Compounds. ACS NANO 2020; 14:5445-5458. [PMID: 32347713 PMCID: PMC7467812 DOI: 10.1021/acsnano.9b09284] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2019] [Accepted: 04/29/2020] [Indexed: 05/23/2023]
Abstract
We present the analysis of a family of nanotubes (NTs) based on the quaternary misfit layered compound (MLC) YxLa1-xS-TaS2. The NTs were successfully synthesized within the whole range of possible compositions via the chemical vapor transport technique. In-depth analysis of the NTs using electron microscopy and spectroscopy proves the in-phase (partial) substitution of La by Y in the (La,Y)S subsystem and reveals structural changes compared to the previously reported LaS-TaS2 MLC-NTs. The observed structure can be linked to the slightly different lattice parameters of LaS and YS. Raman spectroscopy and infrared transmission measurements reveal the tunability of the plasmonic and vibrational properties. Density-functional theory calculations showed that the YxLa1-xS-TaS2 MLCs are stable in all compositions. Moreover, the calculations indicated that substitution of La by Sc atoms is electronically not favorable, which explains our failed attempt to synthesize these MLC and NTs thereof.
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Affiliation(s)
- Simon Hettler
- Instituto
de Nanociencia de Aragón, Universidad
de Zaragoza, 50018 Zaragoza, Spain
| | - M. B. Sreedhara
- Department of Materials and Interfaces and Department of
Chemical Research
Support, Weizmann Institute of Science, Rehovot 76100, Israel
| | - Marco Serra
- Department of Materials and Interfaces and Department of
Chemical Research
Support, Weizmann Institute of Science, Rehovot 76100, Israel
- Department
of Physical Chemistry, Center for Biomedical Research (CINBIO), Universidad de Vigo, 36310 Vigo, Spain
| | - Sudarson S. Sinha
- Department of Materials and Interfaces and Department of
Chemical Research
Support, Weizmann Institute of Science, Rehovot 76100, Israel
| | - Ronit Popovitz-Biro
- Department of Materials and Interfaces and Department of
Chemical Research
Support, Weizmann Institute of Science, Rehovot 76100, Israel
| | - Iddo Pinkas
- Department of Materials and Interfaces and Department of
Chemical Research
Support, Weizmann Institute of Science, Rehovot 76100, Israel
| | - Andrey N. Enyashin
- Institute
of Solid State Chemistry UB RAS, 620990 Ekaterinburg, Russian Federation
- Institute
of Natural Sciences and Mathematics, Ural
Federal University, 620083 Ekaterinburg, Russian Federation
| | - Reshef Tenne
- Department of Materials and Interfaces and Department of
Chemical Research
Support, Weizmann Institute of Science, Rehovot 76100, Israel
| | - Raul Arenal
- Instituto
de Nanociencia de Aragón, Universidad
de Zaragoza, 50018 Zaragoza, Spain
- Instituto
de Ciencias de Materiales Aragón, CSIC-U. Zaragoza, 50009 Zaragoza, Spain
- ARAID
Foundation, 50018 Zaragoza, Spain
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32
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Li H, Wang S, Ji Z, Xu C, Shlyakhtenko LS, Guo P. Construction of RNA nanotubes. NANO RESEARCH 2019; 12:1952-1958. [PMID: 32153728 PMCID: PMC7062307 DOI: 10.1007/s12274-019-2463-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
Nanotubes are miniature materials with significant potential applications in nanotechnological, medical, biological and material sciences. The quest for manufacturing methods of nano-mechanical modules is in progress. For example, the application of carbon nanotubes has been extensively investigated due to the precise width control, but the precise length control remains challenging. Here we report two approaches for the one-pot self-assembly of RNA nanotubes. For the first approach, six RNA strands were used to assemble the nanotube by forming a 11 nm long hollow channel with the inner diameter of 1.7 nm and the outside diameter of 6.3 nm. For the second approach, six RNA strands were designed to hybridize with their neighboring strands by complementary base pairing and formed a nanotube with a six-helix hollow channel similar to the nanotube assembled by the first approach. The fabricated RNA nanotubes were characterized by gel electrophoresis and atomic force microscopy (AFM), confirming the formation of nanotube-shaped RNA nanostructures. Cholesterol molecules were introduced into RNA nanotubes to facilitate their incorporation into lipid bilayer. Incubation of RNA nanotube complex with the free-standing lipid bilayer membrane under applied voltage led to discrete current signatures. Addition of peptides into the sensing chamber revealed discrete steps of current blockage. Polyarginine peptides with different lengths can be detected by current signatures, suggesting that the RNA-cholesterol complex holds the promise of achieving single molecule sensing of peptides.
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Affiliation(s)
- Hui Li
- Center for RNA Nanobiotechnology and Nanomedicine; Division of Pharmaceutics and Pharmaceutical Chemistry, College of Pharmacy; Department of Physiology & Cell Biology, College of Medicine; Dorothy M. Davis Heart and Lung Research Institute and James Comprehensive Cancer Center, The Ohio State University, Columbus, OH, 43210, USA
| | - Shaoying Wang
- Center for RNA Nanobiotechnology and Nanomedicine; Division of Pharmaceutics and Pharmaceutical Chemistry, College of Pharmacy; Department of Physiology & Cell Biology, College of Medicine; Dorothy M. Davis Heart and Lung Research Institute and James Comprehensive Cancer Center, The Ohio State University, Columbus, OH, 43210, USA
| | - Zhouxiang Ji
- Center for RNA Nanobiotechnology and Nanomedicine; Division of Pharmaceutics and Pharmaceutical Chemistry, College of Pharmacy; Department of Physiology & Cell Biology, College of Medicine; Dorothy M. Davis Heart and Lung Research Institute and James Comprehensive Cancer Center, The Ohio State University, Columbus, OH, 43210, USA
| | - Congcong Xu
- Center for RNA Nanobiotechnology and Nanomedicine; Division of Pharmaceutics and Pharmaceutical Chemistry, College of Pharmacy; Department of Physiology & Cell Biology, College of Medicine; Dorothy M. Davis Heart and Lung Research Institute and James Comprehensive Cancer Center, The Ohio State University, Columbus, OH, 43210, USA
| | - Lyudmila S Shlyakhtenko
- UNMC Nanoimaging Core Facility, Department of Pharmaceutical Sciences, College of Pharmacy University of Nebraska Medical Center, Omaha, NE, 68182, USA
| | - Peixuan Guo
- Center for RNA Nanobiotechnology and Nanomedicine; Division of Pharmaceutics and Pharmaceutical Chemistry, College of Pharmacy; Department of Physiology & Cell Biology, College of Medicine; Dorothy M. Davis Heart and Lung Research Institute and James Comprehensive Cancer Center, The Ohio State University, Columbus, OH, 43210, USA
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