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Carvalho RM, Santos LMNBF, Bastos M, Costa JCS. Carbon-Induced Changes in the Morphology and Wetting Behavior of Ionic Liquids on the Mesoscale. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024. [PMID: 38343280 PMCID: PMC10883047 DOI: 10.1021/acs.langmuir.4c00102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 02/25/2024]
Abstract
Thin films of ionic liquids (ILs) have gained significant attention due to their unique properties and broad applications. Extensive research has focused on studying the influence of ILs' chemical composition and substrate characteristics on the structure and morphology of IL films at the nano- and mesoscopic scales. This study explores the impact of carbon-coated surfaces on the morphology and wetting behavior of a series of alkylimidazolium-based ILs. Specifically, this work investigates the effect of carbon coating on the morphology and wetting behavior of short-chain ([C2C1im][NTf2] and [C2C1im][OTf]) and long-chain ([C8C1im][NTf2] and [C8C1im][OTf]) ILs deposited on indium tin oxide (ITO), silver (Ag), and gold (Au) substrates. A reproducible vapor deposition methodology was utilized for the deposition process. High-resolution scanning electron microscopy, atomic force microscopy, and X-ray photoelectron spectroscopy were used to analyze the morphological and structural characteristics of the substrates and obtained IL films. The experimental data revealed that the IL films deposited on carbon-coated Au substrates showed minor changes in their morphology compared to that of the films deposited on clean Au surfaces. However, the presence of carbon coatings on the ITO and Ag surfaces led to significant morphological alterations in the IL films. Specifically, for short-chain ILs, the carbon film surface induced 2D growth of the IL film, followed by subsequent island growth. In contrast, for long-chain ILs deposited on carbon surfaces, layer-by-layer growth occurred without island formation, resulting in highly uniform and coalesced IL films. The extent of morphological changes observed in the IL films was found to be influenced by two crucial factors: the thickness of the carbon film on the substrate surface and the amount of IL deposition.
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Affiliation(s)
- Rita M Carvalho
- CIQUP, Institute of Molecular Sciences (IMS), Department of Chemistry and Biochemistry, Faculty of Science, University of Porto, Rua do Campo Alegre s/n, P4169-007 Porto, Portugal
| | - Luís M N B F Santos
- CIQUP, Institute of Molecular Sciences (IMS), Department of Chemistry and Biochemistry, Faculty of Science, University of Porto, Rua do Campo Alegre s/n, P4169-007 Porto, Portugal
| | - Margarida Bastos
- CIQUP, Institute of Molecular Sciences (IMS), Department of Chemistry and Biochemistry, Faculty of Science, University of Porto, Rua do Campo Alegre s/n, P4169-007 Porto, Portugal
| | - José C S Costa
- CIQUP, Institute of Molecular Sciences (IMS), Department of Chemistry and Biochemistry, Faculty of Science, University of Porto, Rua do Campo Alegre s/n, P4169-007 Porto, Portugal
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2
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Eneren P, Sergievskaya A, Aksoy YT, Umek P, Konstantinidis S, Vetrano MR. Time-resolved in situ nanoparticle size evolution during magnetron sputtering onto liquids. NANOSCALE ADVANCES 2023; 5:4809-4818. [PMID: 37705790 PMCID: PMC10496901 DOI: 10.1039/d3na00312d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/08/2023] [Accepted: 07/26/2023] [Indexed: 09/15/2023]
Abstract
Despite extensive research since 1996, there are still open questions regarding the primary location of the nucleation process, the growth mechanism of the nanoparticles (NPs), and the influence of the liquid properties on the ultimate size of the NPs for the magnetron sputtering of metals onto liquids. Hence, for the first time to the authors' knowledge, the particle size evolution is in situ and in real-time examined during and after the sputtering of the silver atoms onto silicone oil, i.e., Sputtering onto Liquids (SoL) process. The particle size distribution (PSD) is measured via the Light Extinction Spectroscopy (LES) technique, and the deposition rate and stirring speed effects on the PSDs are analyzed. Based on De Brouckere mean diameters, the size evolution of silver nanoparticles (Ag NPs) over time is monitored. Ag NPs bigger than 20 nm are detected, and the PSDs are shown to be poly-disperse, which is also supported by the ex situ TEM measurements and in situ time-resolved absorption spectra. Moreover, it is shown that aggregation and growth of Ag NPs occur both at the plasma-liquid interface and inside the silicone oil during and after the magnetron sputtering. Despite the same amount of deposited silver, the growth kinetics of Ag NPs in silicone oil vary at different deposition rates. In particular, at higher deposition rates, larger NPs are formed. Stirring is seen to help disaggregate the particle lumps. Faster stirring does not substantially influence the final size but promotes the formation of smaller NPs (<20 nm). Also, low colloidal stability of Ag NPs in silicone oil is observed.
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Affiliation(s)
- Pinar Eneren
- KU Leuven, Department of Mechanical Engineering, Division of Applied Mechanics and Energy Conversion (TME) B-3001 Leuven Belgium
| | - Anastasiya Sergievskaya
- University of Mons, Plasma-Surface Interaction Chemistry (ChIPS), CIRMAP, Research Institute for Materials Science and Engineering B-7000 Mons Belgium
| | - Yunus Tansu Aksoy
- KU Leuven, Department of Mechanical Engineering, Division of Applied Mechanics and Energy Conversion (TME) B-3001 Leuven Belgium
| | - Polona Umek
- Jožef Stefan Institute, Department of Condensed Matter Physics Ljubljana Slovenia
| | - Stephanos Konstantinidis
- University of Mons, Plasma-Surface Interaction Chemistry (ChIPS), CIRMAP, Research Institute for Materials Science and Engineering B-7000 Mons Belgium
| | - Maria Rosaria Vetrano
- KU Leuven, Department of Mechanical Engineering, Division of Applied Mechanics and Energy Conversion (TME) B-3001 Leuven Belgium
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3
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Luria O, Elgarisi M, Frumkin V, Razin A, Ericson J, Gommed K, Widerker D, Gabay I, Belikov R, Bookbinder J, Balaban E, Bercovici M. Fluidic shaping and in-situ measurement of liquid lenses in microgravity. NPJ Microgravity 2023; 9:74. [PMID: 37696908 PMCID: PMC10495324 DOI: 10.1038/s41526-023-00309-9] [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: 12/16/2022] [Accepted: 07/19/2023] [Indexed: 09/13/2023] Open
Abstract
In the absence of gravity, surface tension dominates over the behavior of liquids. While this often poses a challenge in adapting Earth-based technologies to space, it can also provide an opportunity for novel technologies that utilize its advantages. In particular, surface tension drives a liquid body to a constant-mean-curvature shape with extremely smooth surfaces, properties which are highly beneficial for optical components. We here present the design, implementation and analysis of parabolic flight experiments demonstrating the creation and in-situ measurement of optical lenses made entirely by shaping liquids in microgravity. We provide details of the two experimental systems designed to inject the precise amount of liquid within the short microgravity timeframe provided in a parabolic flight, while also measuring the resulting lens' characteristics in real-time using both resolution target-imaging and Shack-Hartmann wavefront sensing. We successfully created more than 20 liquid lenses during the flights. We also present video recordings of the process, from the lenses' creation during microgravity and up until their collapse upon return to gravity. The work thus demonstrates the feasibility of creating and utilizing liquid-based optics in space.
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Affiliation(s)
- Omer Luria
- Faculty of Mechanical Engineering, Technion - Israel Institute of Technology, Haifa, Israel
| | - Mor Elgarisi
- Faculty of Mechanical Engineering, Technion - Israel Institute of Technology, Haifa, Israel
| | - Valeri Frumkin
- Faculty of Mechanical Engineering, Technion - Israel Institute of Technology, Haifa, Israel
- Department of Mathematics, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Alexey Razin
- Faculty of Mechanical Engineering, Technion - Israel Institute of Technology, Haifa, Israel
| | - Jonathan Ericson
- Faculty of Mechanical Engineering, Technion - Israel Institute of Technology, Haifa, Israel
| | - Khaled Gommed
- Faculty of Mechanical Engineering, Technion - Israel Institute of Technology, Haifa, Israel
| | - Daniel Widerker
- Faculty of Mechanical Engineering, Technion - Israel Institute of Technology, Haifa, Israel
| | - Israel Gabay
- Faculty of Mechanical Engineering, Technion - Israel Institute of Technology, Haifa, Israel
| | - Ruslan Belikov
- NASA Ames Research Center, Moffett Blvd., Moffett Field, CA, USA
| | - Jay Bookbinder
- NASA Ames Research Center, Moffett Blvd., Moffett Field, CA, USA
| | - Edward Balaban
- NASA Ames Research Center, Moffett Blvd., Moffett Field, CA, USA.
| | - Moran Bercovici
- Faculty of Mechanical Engineering, Technion - Israel Institute of Technology, Haifa, Israel.
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4
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Rabien S. Adaptive parabolic membrane mirrors for large deployable space telescopes. APPLIED OPTICS 2023; 62:2835-2844. [PMID: 37133126 DOI: 10.1364/ao.487262] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
A key element for the development of extremely large telescopes in space or balloon-borne observatories will be a reduction in the areal weight of the primary mirror. Large membrane mirrors offer a very low areal weight but are difficult to manufacture with the optical quality needed for astronomical telescopes. This paper demonstrates a practical method to overcome this limitation. In a test chamber we have successfully grown optical quality parabolic membrane mirrors on a rotating liquid in a test chamber. These polymer mirror prototypes of up to 30 cm in diameter show a sufficiently low surface roughness and can be coated with reflective layers. By manipulating the parabolic shape locally using radiative adaptive optics methods, it is shown that imperfections or changes in the shape can be corrected. With only tiny local temperature changes induced by the radiation, many micrometers of stroke have been achieved. Scaling the method investigated to produce mirrors with diameters of many meters is possible using available technology. This approach opens the possibility to produce affordable extremely large primary mirrors for space telescopes. With the flexibility of the membrane material, this type of mirror can be compactly rolled up when stored in the launch vehicle, and then be deployed in space.
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Akiyoshi K, Watanabe Y, Kameyama T, Kawawaki T, Negishi Y, Kuwabata S, Torimoto T. Composition control of alloy nanoparticles consisting of bulk-immiscible Au and Rh metals via an ionic liquid/metal sputtering technique for improving their electrocatalytic activity. Phys Chem Chem Phys 2022; 24:24335-24344. [PMID: 36177988 DOI: 10.1039/d2cp01461k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
AuRh bimetallic alloy nanoparticles (NPs) were successfully prepared by simultaneous sputtering of Au and Rh in a room-temperature ionic liquid (RTIL) of N,N-diethyl-N-methyl-N-(2-methoxyethyl) ammonium tetrafluoroborate (DEME-BF4). Bimetallic AuRh alloy NPs of 1-2 nm in size were formed in the RTIL. The alloy composition was controllable by changing the surface areas of Au and Rh plates used as sputtering targets. Loading thus-obtained AuRh NPs on carbon black (CB) powders increased the size of AuRh NPs to ca. 2-8 nm, depending on the Au/Rh ratio. The electrocatalytic activity for oxygen reduction reaction (ORR) of AuRh NP-loaded CB catalysts showed a volcano-type dependence on their composition, in which AuRh NPs with Au surface coverage of 62% exhibited the optimal ORR activity, the specific activity being ca. 5 times higher than that of pure Rh NPs.
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Affiliation(s)
- Kazutaka Akiyoshi
- Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, 464-8603, Japan.
| | - Yumezo Watanabe
- Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, 464-8603, Japan.
| | - Tatsuya Kameyama
- Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, 464-8603, Japan.
| | - Tokuhisa Kawawaki
- Department of Applied Chemistry, Faculty of Science, Tokyo University of Science, Kagurazaka, Shinjuku-ku, Tokyo, 162-8601, Japan.,Research Institute for Science and Technology, Tokyo University of Science, Kagurazaka, Shinjuku-ku, Tokyo, 162-8601, Japan
| | - Yuichi Negishi
- Department of Applied Chemistry, Faculty of Science, Tokyo University of Science, Kagurazaka, Shinjuku-ku, Tokyo, 162-8601, Japan.,Research Institute for Science and Technology, Tokyo University of Science, Kagurazaka, Shinjuku-ku, Tokyo, 162-8601, Japan
| | - Susumu Kuwabata
- Graduate School of Engineering, Osaka University, 2-1 Yamada-oka, Suita, Osaka, 565-0871, Japan
| | - Tsukasa Torimoto
- Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, 464-8603, Japan.
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6
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Quantum chemical calculations of formation enthalpies of cations and anions of ionic liquids. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.119996] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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7
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Sergievskaya A, Chauvin A, Konstantinidis S. Sputtering onto liquids: a critical review. BEILSTEIN JOURNAL OF NANOTECHNOLOGY 2022; 13:10-53. [PMID: 35059275 PMCID: PMC8744456 DOI: 10.3762/bjnano.13.2] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2021] [Accepted: 12/07/2021] [Indexed: 05/03/2023]
Abstract
Sputter deposition of atoms onto liquid substrates aims at producing colloidal dispersions of small monodisperse ultrapure nanoparticles (NPs). Since sputtering onto liquids combines the advantages of the physical vapor deposition technique and classical colloidal synthesis, the review contains chapters explaining the basics of (magnetron) sputter deposition and the formation of NPs in solution. This review article covers more than 132 papers published on this topic from 1996 to September 2021 and aims at providing a critical analysis of most of the reported data; we will address the influence of the sputtering parameters (sputter power, current, voltage, sputter time, working gas pressure, and the type of sputtering plasma) and host liquid properties (composition, temperature, viscosity, and surface tension) on the NP formation as well as a detailed overview of the properties and applications of the produced NPs.
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Affiliation(s)
- Anastasiya Sergievskaya
- Plasma-Surface Interaction Chemistry (ChIPS), University of Mons, 23 Place du Parc, B-7000 Mons, Belgium
| | - Adrien Chauvin
- Plasma-Surface Interaction Chemistry (ChIPS), University of Mons, 23 Place du Parc, B-7000 Mons, Belgium
- Department of Condensed Matter Physics, Faculty of Mathematics and Physics, Charles University, Ke Karlovu 5, 121 16 Praha 2, Czech Republic
| | - Stephanos Konstantinidis
- Plasma-Surface Interaction Chemistry (ChIPS), University of Mons, 23 Place du Parc, B-7000 Mons, Belgium
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8
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Nguyen MT, Deng L, Yonezawa T. Control of nanoparticles synthesized via vacuum sputter deposition onto liquids: a review. SOFT MATTER 2021; 18:19-47. [PMID: 34901989 DOI: 10.1039/d1sm01002f] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Sputter deposition onto a low volatile liquid matrix is a recently developed green synthesis method for metal/metal oxide nanoparticles (NPs). In this review, we introduce the synthesis method and highlight its unique features emerging from the combination of the sputter deposition and the ability of the liquid matrix to regulate particle growth. Then, manipulating the synthesis parameters to control the particle size, composition, morphology, and crystal structure of NPs is presented. Subsequently, we evaluate the key experimental factors governing the particle characteristics and the formation of monometallic and alloy NPs to provide overall directions and insights into the preparation of NPs with desired properties. Following that, the current understanding of the growth and formation mechanism of sputtered particles in liquid media, in particular, ionic liquids and liquid polymers, during and after sputtering is emphasized. Finally, we discuss the challenges that remain and share our perspectives on the future prospects of the synthesis method and the obtained NPs.
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Affiliation(s)
- Mai Thanh Nguyen
- Division of Materials Science and Engineering, Faculty of Engineering, Hokkaido University, Kita 13 Nishi 8, Kita-ku, Sapporo, Hokkaido 060-8628, Japan.
| | - Lianlian Deng
- Division of Materials Science and Engineering, Faculty of Engineering, Hokkaido University, Kita 13 Nishi 8, Kita-ku, Sapporo, Hokkaido 060-8628, Japan.
| | - Tetsu Yonezawa
- Division of Materials Science and Engineering, Faculty of Engineering, Hokkaido University, Kita 13 Nishi 8, Kita-ku, Sapporo, Hokkaido 060-8628, Japan.
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9
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Balischewski C, Choi H, Behrens K, Beqiraj A, Körzdörfer T, Geßner A, Wedel A, Taubert A. Metal Sulfide Nanoparticle Synthesis with Ionic Liquids - State of the Art and Future Perspectives. ChemistryOpen 2021; 10:272-295. [PMID: 33751846 PMCID: PMC7944564 DOI: 10.1002/open.202000357] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Revised: 02/12/2021] [Indexed: 11/10/2022] Open
Abstract
Metal sulfides are among the most promising materials for a wide variety of technologically relevant applications ranging from energy to environment and beyond. Incidentally, ionic liquids (ILs) have been among the top research subjects for the same applications and also for inorganic materials synthesis. As a result, the exploitation of the peculiar properties of ILs for metal sulfide synthesis could provide attractive new avenues for the generation of new, highly specific metal sulfides for numerous applications. This article therefore describes current developments in metal sulfide nanoparticle synthesis as exemplified by a number of highlight examples. Moreover, the article demonstrates how ILs have been used in metal sulfide synthesis and discusses the benefits of using ILs over more traditional approaches. Finally, the article demonstrates some technological challenges and how ILs could be used to further advance the production and specific property engineering of metal sulfide nanomaterials, again based on a number of selected examples.
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Affiliation(s)
- Christian Balischewski
- Institute of ChemistryUniversity of PotsdamKarl-Liebknecht-Str. 24–2514476PotsdamGermany
| | - Hyung‐Seok Choi
- Fraunhofer Institute for Applied Polymer Research (IAP)Functional Materials and Devices/Functional Polymer SystemsGeiselbergstrasse 6914476Potsdam-GolmGermany
| | - Karsten Behrens
- Institute of ChemistryUniversity of PotsdamKarl-Liebknecht-Str. 24–2514476PotsdamGermany
| | - Alkit Beqiraj
- Institute of ChemistryUniversity of PotsdamKarl-Liebknecht-Str. 24–2514476PotsdamGermany
| | - Thomas Körzdörfer
- Institute of ChemistryUniversity of PotsdamKarl-Liebknecht-Str. 24–2514476PotsdamGermany
| | - André Geßner
- Fraunhofer Institute for Applied Polymer Research (IAP)Functional Materials and Devices/Functional Polymer SystemsGeiselbergstrasse 6914476Potsdam-GolmGermany
| | - Armin Wedel
- Fraunhofer Institute for Applied Polymer Research (IAP)Functional Materials and Devices/Functional Polymer SystemsGeiselbergstrasse 6914476Potsdam-GolmGermany
| | - Andreas Taubert
- Institute of ChemistryUniversity of PotsdamKarl-Liebknecht-Str. 24–2514476PotsdamGermany
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10
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Heinicke C, Foing B. Human habitats: prospects for infrastructure supporting astronomy from the Moon. PHILOSOPHICAL TRANSACTIONS. SERIES A, MATHEMATICAL, PHYSICAL, AND ENGINEERING SCIENCES 2021; 379:20190568. [PMID: 33222635 PMCID: PMC7739901 DOI: 10.1098/rsta.2019.0568] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 07/30/2020] [Indexed: 06/11/2023]
Abstract
There is strong interest in lunar exploration from governmental space agencies, private companies and the public. NASA is about to send humans to the lunar surface again within the next few years, and ESA has proposed the concept of the Moon Village, with the goal of a sustainable human presence and activity on the lunar surface. Although construction of the infrastructure for this permanent human settlement is envisaged for the end of this decade by many, there is no definite mission plan yet. While this may be unsatisfactory for the impatient, this fact actually carries great potential: this is the optimal time to develop a forward-looking science input and influence mission planning. Based on data from recent missions (SMART-1, Kaguya, Chang'E, Chandrayaan-1 and LRO) as well as simulation campaigns (e.g. ILEWG EuroMoonMars), we provide initial input on how astronomy could be incorporated into a future Moon Village, and how the presence of humans (and robots) on the Moon could help deploy and maintain astronomical hardware. This article is part of a discussion meeting issue 'Astronomy from the Moon: the next decades'.
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Affiliation(s)
- C. Heinicke
- ZARM - Center of Applied Space Technology and Microgravity, University of Bremen, Am Fallturm 2, 28359 Bremen, Germany
| | - B. Foing
- ESA/ESTEC and ILEWG, PO Box 299, 2200 AG Noordwijk, The Netherlands
- Faculty of Earth and Life Sciences, Vrije Universiteit Amsterdam, De Boelelaan 1081–1087, 1081 HV Amsterdam, The Netherlands
- Leiden University, Niels Bohrweg 2, 2333 CA Leiden, The Netherlands
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11
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Gaiser S, Schütz U, Rupper P, Hegemann D. Plasma Processing of Low Vapor Pressure Liquids to Generate Functional Surfaces. Molecules 2020; 25:molecules25246024. [PMID: 33352685 PMCID: PMC7767314 DOI: 10.3390/molecules25246024] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2020] [Revised: 12/07/2020] [Accepted: 12/14/2020] [Indexed: 11/16/2022] Open
Abstract
The concept of depositing solid films on low-vapor pressure liquids is introduced and developed into a top-down approach to functionalize surfaces by attaching liquid polyethylene glycol (PEG). Solid-liquid gradients were formed by low-pressure plasma treatment yielding cross-linking and/or deposition of a plasma polymer film subsequently bound to a flexible polydimethylsiloxane (PDMS) backing. The analysis via optical transmission spectroscopy (OTS), optical, confocal laser scanning (CLSM) and scanning electron microscopy (SEM), Fourier transform infrared (FTIR) and X-ray photoelectron spectroscopy (XPS) as well as by water contact angle (WCA) measurements revealed correlations between optical appearance, chemical composition and surface properties of the resulting water absorbing, covalently bound PEG-functionalized surfaces. Requirements for plasma polymer film deposition on low-vapor pressure liquids and effective surface functionalization are defined. Namely, the thickness of the liquid PEG substrate was a crucial parameter for successful film growth and covalent attachment of PEG. The presented method is a practicable approach for the production of functional surfaces featuring long-lasting strong hydrophilic properties, making them predestined for non-fouling or low-friction applications.
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12
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Secundo F, Amao Y. Visible-light-driven CO 2 reduction to formate with a system of water-soluble zinc porphyrin and formate dehydrogenase in ionic liquid/aqueous media. RSC Adv 2020; 10:42354-42362. [PMID: 35516778 PMCID: PMC9057955 DOI: 10.1039/d0ra08594d] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2020] [Accepted: 11/09/2020] [Indexed: 01/27/2023] Open
Abstract
Visible-light-driven CO2 reduction to formate with a system consisting of water-soluble zinc tetraphenylporphyrin tetrasulfonate (ZnTPPS), formate dehydrogenase from Candida boidinii (CbFDH) and methylviologen (MV) in the presence of triethanolamine (TEOA) as an electron donor in an ionic liquid, 1-ethyl-3-methylimidazolium dimethyl phosphate ([EMlm][Me2PO4])/aqueous media was investigated. The catalytic activity of CbFDH for formate oxidation to CO2 and CO2 reduction to formate did not decrease significantly even in [EMlm][Me2PO4]/aqueous media, compared with that in aqueous media. The visible-light-driven MV reduction by the photosensitization of ZnTPPS in [EMlm][Me2PO4]/aqueous media proceeds more efficiently than in the aqueous media system. In the visible-light-driven CO2 reduction to formate system of ZnTPPS, MV and CbFDH with [EMlm][Me2PO4]/aqueous media, moreover, the formate production concentration after 180 min decreased by only 20% as compared with the system in aqueous media.
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Affiliation(s)
- Francesco Secundo
- Istituto di Scienze e Tecnologie Chimiche "Giulio Natta" CNR Via Mario Bianco 9 20131 Milano Italy
| | - Yutaka Amao
- Graduate School of Science, Osaka City University 3-3-138 Sugimoto, Sumiyoshi-ku Osaka 558-8585 Japan.,Research Centre of Artificial Photosynthesis (ReCAP), Osaka City University 3-3-138 Sugimoto, Sumiyoshi-ku Osaka 558-8585 Japan
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13
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Hozuki N, Takato H, Maruyama S, Kondo M, Fujimoto K, Matsumoto Y. A New Route to Carbon Film Coating by Anodic Electrodeposition from Ionic Liquid Containing Different Phenylsilane Derivatives. CHEM LETT 2020. [DOI: 10.1246/cl.200537] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Nana Hozuki
- Department of Applied Chemistry, School of Engineering, Tohoku University, 6-6-07 Aramaki Aza Aoba, Aoba-ku, Sendai, Miyagi 980-8579, Japan
- Fukushima Renewable Energy Institute, Advanced Industrial Science and Technology (FREA), 2-2-9 Machiikedai, Koriyama, Fukushima 963-0298, Japan
| | - Hidetaka Takato
- Fukushima Renewable Energy Institute, Advanced Industrial Science and Technology (FREA), 2-2-9 Machiikedai, Koriyama, Fukushima 963-0298, Japan
| | - Shingo Maruyama
- Department of Applied Chemistry, School of Engineering, Tohoku University, 6-6-07 Aramaki Aza Aoba, Aoba-ku, Sendai, Miyagi 980-8579, Japan
| | - Michio Kondo
- Fukushima Renewable Energy Institute, Advanced Industrial Science and Technology (FREA), 2-2-9 Machiikedai, Koriyama, Fukushima 963-0298, Japan
| | - Kenjiro Fujimoto
- Department of Pure and Applied Chemistry, Faculty of Science and Technology, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan
| | - Yuji Matsumoto
- Department of Applied Chemistry, School of Engineering, Tohoku University, 6-6-07 Aramaki Aza Aoba, Aoba-ku, Sendai, Miyagi 980-8579, Japan
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14
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Akiyoshi K, Kameyama T, Yamamoto T, Kuwabata S, Tatsuma T, Torimoto T. Controlling the oxidation state of molybdenum oxide nanoparticles prepared by ionic liquid/metal sputtering to enhance plasmon-induced charge separation. RSC Adv 2020; 10:28516-28522. [PMID: 35520071 PMCID: PMC9055849 DOI: 10.1039/d0ra05165a] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2020] [Accepted: 07/14/2020] [Indexed: 12/31/2022] Open
Abstract
Nanoparticles composed of molybdenum oxide, MoOx, were successfully prepared by room-temperature ionic liquid (RTIL)/metal sputtering followed by heat treatment. Hydroxyl groups in RTIL molecules retarded the coalescence between MoOx NPs during heat treatment at 473 K in air, while the oxidation state of Mo species in MoOx nanoparticles (NPs) could be modified by changing the heat treatment time. An LSPR peak was observed at 840 nm in the near-IR region for MoOx NPs of 55 nm or larger in size that were annealed in a hydroxyl-functionalized RTIL. Photoexcitation of the LSPR peak of MoOx NPs induced electron transfer from NPs to ITO electrodes. MoOx NPs, prepared by sputtering Mo metal on a room-temperature ionic liquid (RTIL) followed by heating in air, produced anodic photocurrents with the excitation of their LSPR peak.![]()
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Affiliation(s)
| | - Tatsuya Kameyama
- Graduate School of Engineering
- Nagoya University
- Nagoya 464-8603
- Japan
| | | | | | - Tetsu Tatsuma
- Institute of Industrial Science
- The University of Tokyo
- Tokyo 153-8505
- Japan
| | - Tsukasa Torimoto
- Graduate School of Engineering
- Nagoya University
- Nagoya 464-8603
- Japan
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15
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Chakraborty M, Ahmed T, Sarkar M. Understanding the Behavior of Monocationic and Dicationic Room-Temperature Ionic Liquids through Resonance Energy-Transfer Studies. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:16172-16184. [PMID: 31721590 DOI: 10.1021/acs.langmuir.9b02776] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The present work has been undertaken with an objective to understand the differences in the local structural organization of imidazolium-based monocationic ionic liquids (MILs) and dicationic ionic liquids (DILs) through resonance energy-transfer (RET) studies. In this study, a neat IL is used as a donor and a charged species rhodamine 6G (R6G) is used as an acceptor unit because of the fact that they satisfy the spectroscopic criteria that are needed for an RET event to take place. Additionally, R6G, being a charged species, is expected to facilitate the electrostatic interactions with the ILs which are also charged. Specifically, two imidazolium-based germinal DILs and their monocationic counterparts are used for the present investigations. Additionally, the studies are carried out in some selected MILs where the lengths of the alkyl side chains are kept unchanged for MILs and DILs. Interestingly, the present data reveal that the RET interaction is more favorable for DILs than for MILs, even though the DILs are relatively bulkier than their monocationic counterparts. More interestingly, the RET interaction is also found to be more favorable for DILs than for MILs, where the length of the alkyl group is kept fixed for MILs and DILs. The result of the present study delineates that the alkyl chain length on the cation is not the sole factor contributing to the RET outcomes for DILs and MILs but the local structure of DILs also contributes significantly to the same. The current investigation clearly indicates that DILs have a more compact local structure than that of MILs. Essentially, the current study highlights that a cost-effective, noninvasive technique such as RET is quite effective in capturing the differences in the nanostructural organization of MILs and DILs.
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Affiliation(s)
- Manjari Chakraborty
- School of Chemical Sciences , National Institute of Science Education and Research , HBNI, Bhimpur-Padanpur , Jatani, Khordha, 752050 Bhubaneswar , Odisha , India
| | - Tasnim Ahmed
- Department of Chemistry , University of Hyderabad , Hyderabad 500046 , India
| | - Moloy Sarkar
- School of Chemical Sciences , National Institute of Science Education and Research , HBNI, Bhimpur-Padanpur , Jatani, Khordha, 752050 Bhubaneswar , Odisha , India
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16
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Arkhipova EA, Ivanov AS, Maslakov KI, Savilov SV, Lunin VV. Effect of cation structure of tetraalkylammonium- and imidazolium-based ionic liquids on their conductivity. Electrochim Acta 2019. [DOI: 10.1016/j.electacta.2018.12.002] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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17
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Benedetto A, Ballone P. Room-Temperature Ionic Liquids and Biomembranes: Setting the Stage for Applications in Pharmacology, Biomedicine, and Bionanotechnology. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:9579-9597. [PMID: 29510045 DOI: 10.1021/acs.langmuir.7b04361] [Citation(s) in RCA: 54] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
Empirical evidence and conceptual elaboration reveal and rationalize the remarkable affinity of organic ionic liquids for biomembranes. Cations of the so-called room-temperature ionic liquids (RTILs), in particular, are readily absorbed into the lipid fraction of biomembranes, causing a variety of observable biological effects, including generic cytotoxicity, broad antibacterial potential, and anticancer activity. Chemical physics analysis of model systems made of phospholipid bilayers, RTIL ions, and water confirm and partially explain this evidence, quantifying the mild destabilizing effect of RTILs on the structural, dynamic, and thermodynamic properties of lipids in biomembranes. Our Feature Article presents a brief introduction to these systems and to their roles in biophysics and biotechnology, summarizing recent experimental and computational results on their properties. More importantly, it highlights the many developments in pharmacology, biomedicine, and bionanotechnology expected from the current research effort on this topic. To anticipate future developments, we speculate on (i) potential applications of (magnetic) RTILs to affect and control the rheology of cells and biological tissues, of great relevance for diagnostics and (ii) the use of RTILs to improve the durability, reliability, and output of biomimetic photovoltaic devices.
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Affiliation(s)
- Antonio Benedetto
- Laboratory for Neutron Scattering , Paul Scherrer Institute , Villigen 5232 , Switzerland
- Conway Institute of Biomolecular and Biomedical Research , University College Dublin , Dublin 4 , Ireland
| | - Pietro Ballone
- Italian Institute of Technology , Via Morego 30 , 16163 Genova , Italy
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18
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Delcheva I, Beattie DA, Ralston J, Krasowska M. Dynamic wetting of imidazolium-based ionic liquids on gold and glass. Phys Chem Chem Phys 2018; 20:2084-2093. [DOI: 10.1039/c7cp06404g] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Experimental data and theoretical fitting for ionic liquid wetting on application-relevant substrates.
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Affiliation(s)
- I. Delcheva
- Future Industries Institute
- University of South Australia
- Mawson Lakes
- Australia
- School of Information Technology and Mathematical Sciences
| | - D. A. Beattie
- Future Industries Institute
- University of South Australia
- Mawson Lakes
- Australia
- School of Information Technology and Mathematical Sciences
| | - J. Ralston
- Division of Information Technology
- Engineering and the Environment
- University of South Australia
- Mawson Lakes
- Australia
| | - M. Krasowska
- Future Industries Institute
- University of South Australia
- Mawson Lakes
- Australia
- School of Information Technology and Mathematical Sciences
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19
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Yang D, Fu F, Li L, Yang Z, Wan Z, Luo Y, Hu N, Chen X, Zeng G. Unique orientations and rotational dynamics of a 1-butyl-3-methyl-imidazolium hexafluorophosphate ionic liquid at the gas–liquid interface: the effects of the hydrogen bond and hydrophobic interactions. Phys Chem Chem Phys 2018; 20:12043-12052. [DOI: 10.1039/c8cp00839f] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Two-stage rotational motions of the interfacial [BMIM]+ cations are essentially determined by both hydrophobic and hydrogen-bonding interactions.
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Affiliation(s)
- Deshuai Yang
- Institute of Advanced Materials (IAM), State-Province Joint Engineering Laboratory of Zeolite Membrane Materials, College of Chemistry and Chemical Engineering, Jiangxi Normal University
- Nanchang 330022
- People's Republic of China
- Kuang Yaming Honors School, Nanjing University
- Nanjing 210023
| | - Fangjia Fu
- Institute of Advanced Materials (IAM), State-Province Joint Engineering Laboratory of Zeolite Membrane Materials, College of Chemistry and Chemical Engineering, Jiangxi Normal University
- Nanchang 330022
- People's Republic of China
| | - Li Li
- Institute of Advanced Materials (IAM), State-Province Joint Engineering Laboratory of Zeolite Membrane Materials, College of Chemistry and Chemical Engineering, Jiangxi Normal University
- Nanchang 330022
- People's Republic of China
| | - Zhen Yang
- Institute of Advanced Materials (IAM), State-Province Joint Engineering Laboratory of Zeolite Membrane Materials, College of Chemistry and Chemical Engineering, Jiangxi Normal University
- Nanchang 330022
- People's Republic of China
| | - Zheng Wan
- Institute of Advanced Materials (IAM), State-Province Joint Engineering Laboratory of Zeolite Membrane Materials, College of Chemistry and Chemical Engineering, Jiangxi Normal University
- Nanchang 330022
- People's Republic of China
| | - Yi Luo
- Institute of Advanced Materials (IAM), State-Province Joint Engineering Laboratory of Zeolite Membrane Materials, College of Chemistry and Chemical Engineering, Jiangxi Normal University
- Nanchang 330022
- People's Republic of China
| | - Na Hu
- Institute of Advanced Materials (IAM), State-Province Joint Engineering Laboratory of Zeolite Membrane Materials, College of Chemistry and Chemical Engineering, Jiangxi Normal University
- Nanchang 330022
- People's Republic of China
| | - Xiangshu Chen
- Institute of Advanced Materials (IAM), State-Province Joint Engineering Laboratory of Zeolite Membrane Materials, College of Chemistry and Chemical Engineering, Jiangxi Normal University
- Nanchang 330022
- People's Republic of China
| | - Guixiang Zeng
- Kuang Yaming Honors School, Nanjing University
- Nanjing 210023
- People's Republic of China
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20
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Sedghamiz E, Moosavi M. Probing the tricationic ionic liquid/vacuum interface: insights from molecular dynamics simulations. Phys Chem Chem Phys 2018; 20:14251-14263. [DOI: 10.1039/c8cp02471e] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The surface properties of three symmetric linear tricationic ionic liquids (LTILs) with the common anion, bis(trifluoromethylsulfonyl)imide ([NTf2]−), were studied using atomistic molecular dynamics simulation and identification of the truly interfacial molecules (ITIM) analysis.
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Affiliation(s)
- Elaheh Sedghamiz
- Department of Chemistry
- University of Isfahan
- Isfahan 81746-73441
- Iran
| | - Majid Moosavi
- Department of Chemistry
- University of Isfahan
- Isfahan 81746-73441
- Iran
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21
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Ishida Y, Corpuz RD, Yonezawa T. Matrix Sputtering Method: A Novel Physical Approach for Photoluminescent Noble Metal Nanoclusters. Acc Chem Res 2017; 50:2986-2995. [PMID: 29190067 DOI: 10.1021/acs.accounts.7b00470] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Noble metal nanoclusters are believed to be the transition between single metal atoms, which show distinct optical properties, and metal nanoparticles, which show characteristic plasmon absorbance. The interesting properties of these materials emerge when the particle size is well below 2 nm, such as photoluminescence, which has potential application particularly in biomedical fields. These photoluminescent ultrasmall nanoclusters are typically produced by chemical reduction, which limits their practical application because of the inherent toxicity of the reagents used in this method. Thus, alternative strategies are sought, particularly in terms of physical approaches, which are known as "greener alternatives," to produce high-purity materials at high yields. Thus, a new approach using the sputtering technique was developed. This method was initially used to produce thin films using solid substrates; now it can be applied even with liquid substrates such as ionic liquids or polyethylene glycol as long as these liquids have a low vapor pressure. This revolutionary development has opened up new areas of research, particularly for the synthesis of colloidal nanoparticles with dimensions below 10 nm. We are among the first to apply the sputtering technique to the physical synthesis of photoluminescent noble metal nanoclusters. Although typical sputtering systems have relied on the effect of surface composition and viscosity of the liquid matrix on controlling particle diameters, which only resulted in diameters ca. 3-10 nm, that were all plasmonic, our new approach introduced thiol molecules as stabilizers inspired from chemical methods. In the chemical syntheses of metal nanoparticles, controlling the concentration ratio between metal ions and stabilizing reagents is a possible means of systematic size control. However, it was not clear whether this would be applicable in a sputtering system. Our latest results showed that we were able to generically produce a variety of photoluminescent monometallic nanoclusters of Au, Ag, and Cu, all of which showed stable emission in both solution and solid form via our matrix sputtering method with the induction of cationic-, neutral-, and anionic-charged thiol ligands. We also succeeded in synthesizing photoluminescent bimetallic Au-Ag nanoclusters that showed tunable emission within the UV-NIR region by controlling the composition of the atomic ratio by a double-target sputtering technique. Most importantly, we have revealed the formation mechanism of these unique photoluminescent nanoclusters by sputtering, which had relatively larger diameters (ca. 1-3 nm) as determined using TEM and stronger emission quantum yield (max. 16.1%) as compared to typical photoluminescent nanoclusters prepared by chemical means. We believe the high tunability of sputtering systems presented here has significant advantages for creating novel photoluminescent nanoclusters as a complementary strategy to common chemical methods. This Account highlights our journey toward understanding the photophysical properties and formation mechanism of photoluminescent noble metal nanoclusters via the sputtering method, a novel strategy that will contribute widely to the body of scientific knowledge of metal nanoparticles and nanoclusters.
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Affiliation(s)
- Yohei Ishida
- Division of Materials Science
and Engineering, Faculty of Engineering, Hokkaido University, Kita 13 Nishi 8, Kita-ku, Sapporo, Hokkaido 060-8628, Japan
| | - Ryan D. Corpuz
- Division of Materials Science
and Engineering, Faculty of Engineering, Hokkaido University, Kita 13 Nishi 8, Kita-ku, Sapporo, Hokkaido 060-8628, Japan
| | - Tetsu Yonezawa
- Division of Materials Science
and Engineering, Faculty of Engineering, Hokkaido University, Kita 13 Nishi 8, Kita-ku, Sapporo, Hokkaido 060-8628, Japan
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22
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Li L, Chang L, Zhang X, Liu H, Jiang L. Surface Charge-Induced Efficient Recovery of Ionic Liquids from Aqueous Phase. ACS APPLIED MATERIALS & INTERFACES 2017; 9:29355-29362. [PMID: 28791862 DOI: 10.1021/acsami.7b09488] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Ionic liquids (ILs), which consist of pure cations and anions, are widely used in diverse applications and regarded as one of the best choices of "green solvents." However, the lack of effective green methods for recovering ILs and the safety issues caused by entering environment severely hinder the application of ILs in the green chemistry. Here, we show that rationally tuning the surface charge of a poly(tert-butyl acrylate) (PtBA)-coated porous mesh can selectively let ILs pass through, thus providing an efficient and convenient strategy to recover ILs. The surface charge of the porous mesh can be precisely controlled by regulating the hydrolysis degree of the chemically grafted PtBA coating. PtBA-coated porous mesh with a proper surface charge can be tuned to be IL-philic for a specific IL but hydrophobic, and thus can be applied to recover various kinds of ILs from the aqueous phase. This study offers a new platform for the development of functional membranes for efficient recovery of ILs.
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Affiliation(s)
- Li Li
- CAS Key Laboratory of Bio-Inspired Materials and Interfacial Science, CAS Center for Excellence in Nanoscience, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences , Beijing 100190, P. R. China
- College of Materials Science & Engineering, Beijing Institute of Petrochemical Technology , Beijing 102617, P. R. China
| | - Li Chang
- State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province and Department of Chemistry, Lanzhou University , Lanzhou 730000, P. R. China
| | - Xiqi Zhang
- CAS Key Laboratory of Bio-Inspired Materials and Interfacial Science, CAS Center for Excellence in Nanoscience, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences , Beijing 100190, P. R. China
| | - Hongliang Liu
- CAS Key Laboratory of Bio-Inspired Materials and Interfacial Science, CAS Center for Excellence in Nanoscience, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences , Beijing 100190, P. R. China
| | - Lei Jiang
- CAS Key Laboratory of Bio-Inspired Materials and Interfacial Science, CAS Center for Excellence in Nanoscience, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences , Beijing 100190, P. R. China
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23
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Hamada T, Sugioka D, Kameyama T, Kuwabata S, Torimoto T. Electrocatalytic Activity of Bimetallic Pd-Au Particle Films Prepared by Sequential Sputter Deposition of Pd and Au onto Hydroxyl-functionalized Ionic Liquid. CHEM LETT 2017. [DOI: 10.1246/cl.170242] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Takashi Hamada
- Graduate School of Engineering, Nagoya University, Chikusa-ku, Nagoya, Aichi 464-8603
| | - Daisuke Sugioka
- Graduate School of Engineering, Nagoya University, Chikusa-ku, Nagoya, Aichi 464-8603
| | - Tatsuya Kameyama
- Graduate School of Engineering, Nagoya University, Chikusa-ku, Nagoya, Aichi 464-8603
| | - Susumu Kuwabata
- Graduate School of Engineering, Osaka University, Suita, Osaka 565-0871
| | - Tsukasa Torimoto
- Graduate School of Engineering, Nagoya University, Chikusa-ku, Nagoya, Aichi 464-8603
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24
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Chiolerio A, Quadrelli MB. Smart Fluid Systems: The Advent of Autonomous Liquid Robotics. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2017; 4:1700036. [PMID: 28725530 PMCID: PMC5515117 DOI: 10.1002/advs.201700036] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2017] [Revised: 03/23/2017] [Indexed: 05/23/2023]
Abstract
Organic, inorganic or hybrid devices in the liquid state, kept in a fixed volume by surface tension or by a confining membrane that protects them from a harsh environment, could be used as biologically inspired autonomous robotic systems with unique capabilities. They could change shape according to a specific exogenous command or by means of a fully integrated adaptive system, and provide an innovative solution for many future applications, such as space exploration in extreme or otherwise challenging environments, post-disaster search and rescue in ground applications, compliant wearable devices, and even in the medical field for in vivo applications. This perspective provides an initial assessment of existing capabilities that could be leveraged to pursue the topic of "Smart Fluid Systems" or "Liquid Engineered Systems".
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Affiliation(s)
- A. Chiolerio
- Center for Sustainable Future TechnologiesIstituto Italiano di TecnologiaCorso Trento 2110129TorinoItaly
| | - Marco B. Quadrelli
- Jet Propulsion LaboratoryCalifornia Institute of TechnologyPasadenaCA91109‐8099U.S.A.
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25
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Mohammad Kazemi M, Namboodiri M, Donfack P, Materny A, Kerlé D, Rathke B, Kiefer J. Influence of the alkyl side-chain length on the ultrafast vibrational dynamics of 1-alkyl-3-methylimidazolium bis(trifluoromethylsulfonyl)amide (C nmimNTf 2) ionic liquids. Phys Chem Chem Phys 2017; 19:15988-15995. [PMID: 28594004 DOI: 10.1039/c7cp02686b] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Probing the vibrational dynamics of 1-alkyl-3-methylimidazolium bis(trifluoromethylsulfonyl)amide (CnmimNTf2) ionic liquids (ILs) using femtosecond time-resolved coherent anti-Stokes Raman scattering (fs-CARS) has indicated the ultrafast vibrational energy transfer between counter ions which is governed by interionic interactions and facilitated by hydrogen bonds. In this study, fs-CARS is used to investigate the ultrafast dynamics of the vibrational modes of the CnmimNTf2 ILs with n = 6, 8, 10, and 12 in a spectral region, which involves the imidazolium ring and the alkyl side-chain vibrations. The vibrational Raman modes with wavenumbers around 1418 cm-1 are excited through the CARS process and the ultrafast time evolution of the consequently excited vibrational modes is monitored. The investigation of the life times of the fs-CARS transient signals indicates that the time scale of the dynamics becomes much faster when the alkyl side-chain length of the CnmimNTf2 is longer than n = 8. This observation suggests an increase in the hydrogen bonding interactions due to the nano-structuring of the ionic liquids, which became evident with an increasing length of the alkyl side-chain. This behavior is also found in molecular dynamics simulations. There, an increase of the oxygen density around the C(2)-H moiety of the imidazolium ring, which is the predominant site for hydrogen bond formation, is observed. In other words, the longer the alkyl side-chain, the more reorganization of the ionic liquid into polar and non-polar domains occurs and the higher the probability of finding interionic hydrogen bonds at the C(2)-H position becomes.
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Affiliation(s)
- Mehdi Mohammad Kazemi
- Jacobs University Bremen, Department of Physics & Earth Sciences, Campus Ring 1, 28759, Bremen, Germany.
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26
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Chang L, Liu H, Ding Y, Zhang J, Li L, Zhang X, Liu M, Jiang L. A smart surface with switchable wettability by an ionic liquid. NANOSCALE 2017; 9:5822-5827. [PMID: 28244540 DOI: 10.1039/c7nr00304h] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
Smart control of surface wettability by ionic liquids (ILs) is significant for designing IL-related intelligent materials and devices. Herein, we present mixed molecular brushes comprised of poly(phenylethyl methacrylate) and 1H,1H,2H,2H-perfluorodecyltrimethoxysilane (PPhEtMA-co-PFDMS) grafted surfaces that are capable of dynamically regulating 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ([EMIm][NTf2]) wettability. 1H NMR and quartz crystal microbalance characterization demonstrate that the wettability changes result from a temperature-dominated cation-π interaction between [EMIm][NTf2] and PPhEtMA-co-PFDMS brushes.
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Affiliation(s)
- Li Chang
- State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province and Department of Chemistry, Lanzhou University, Lanzhou 730000, P. R. China.
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27
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Nancarrow P, Mohammed H. Ionic Liquids in Space Technology - Current and Future Trends. CHEMBIOENG REVIEWS 2017. [DOI: 10.1002/cben.201600021] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Paul Nancarrow
- American University of Sharjah; Department of Chemical Engineering; PO Box 26666 Sharjah United Arab Emirates
| | - Hanin Mohammed
- American University of Sharjah; Department of Chemical Engineering; PO Box 26666 Sharjah United Arab Emirates
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28
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Izgorodina EI, Seeger ZL, Scarborough DLA, Tan SYS. Quantum Chemical Methods for the Prediction of Energetic, Physical, and Spectroscopic Properties of Ionic Liquids. Chem Rev 2017; 117:6696-6754. [PMID: 28139908 DOI: 10.1021/acs.chemrev.6b00528] [Citation(s) in RCA: 151] [Impact Index Per Article: 21.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The accurate prediction of physicochemical properties of condensed systems is a longstanding goal of theoretical (quantum) chemistry. Ionic liquids comprising entirely of ions provide a unique challenge in this respect due to the diverse chemical nature of available ions and the complex interplay of intermolecular interactions among them, thus resulting in the wide variability of physicochemical properties, such as thermodynamic, transport, and spectroscopic properties. It is well understood that intermolecular forces are directly linked to physicochemical properties of condensed systems, and therefore, an understanding of this relationship would greatly aid in the design and synthesis of functionalized materials with tailored properties for an application at hand. This review aims to give an overview of how electronic structure properties obtained from quantum chemical methods such as interaction/binding energy and its fundamental components, dipole moment, polarizability, and orbital energies, can help shed light on the energetic, physical, and spectroscopic properties of semi-Coulomb systems such as ionic liquids. Particular emphasis is given to the prediction of their thermodynamic, transport, spectroscopic, and solubilizing properties.
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Affiliation(s)
- Ekaterina I Izgorodina
- Monash Computational Chemistry Group, School of Chemistry, Monash University , 17 Rainforest Walk, Clayton, Victoria 3800, Australia
| | - Zoe L Seeger
- Monash Computational Chemistry Group, School of Chemistry, Monash University , 17 Rainforest Walk, Clayton, Victoria 3800, Australia
| | - David L A Scarborough
- Monash Computational Chemistry Group, School of Chemistry, Monash University , 17 Rainforest Walk, Clayton, Victoria 3800, Australia
| | - Samuel Y S Tan
- Monash Computational Chemistry Group, School of Chemistry, Monash University , 17 Rainforest Walk, Clayton, Victoria 3800, Australia
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29
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Majhi D, Sarkar M. Probing the microscopic structural organization of neat ionic liquids (ILs) and ionic liquid-based gels through resonance energy transfer (RET) studies. Phys Chem Chem Phys 2017; 19:23194-23203. [DOI: 10.1039/c7cp04728b] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
With the aim to understand the role of the ionic constituents of ionic liquids (ILs) in their structural organization, resonance energy transfer (RET) studies between ionic liquids (donor) and rhodamine 6G (acceptor) have been investigated.
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Affiliation(s)
- Debashis Majhi
- School of Chemical Sciences
- National Institute of Science Education and Research
- HBNI
- Bhubaneswar
- India
| | - Moloy Sarkar
- School of Chemical Sciences
- National Institute of Science Education and Research
- HBNI
- Bhubaneswar
- India
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30
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Jegatheeswaran S, Selvam S, Sri Ramkumar V, Sundrarajan M. Novel strategy for f-HAp/PVP/Ag nanocomposite synthesis from fluoro based ionic liquid assistance: Systematic investigations on its antibacterial and cytotoxicity behaviors. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2016; 67:8-19. [DOI: 10.1016/j.msec.2016.04.097] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2015] [Revised: 04/15/2016] [Accepted: 04/29/2016] [Indexed: 12/15/2022]
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31
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Mehrkesh A, Karunanithi AT. Life-Cycle Perspectives on Aquatic Ecotoxicity of Common Ionic Liquids. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2016; 50:6814-6821. [PMID: 26599072 DOI: 10.1021/acs.est.5b04721] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
This study compares the aquatic ecotoxicity impacts of production- and use-phase release of five common ionic liquids (ILs). Integrating toxicity data, physical properties, and fate and transport parameters with the USEtox model, we report, for the first time, the freshwater ecotoxicity characterization factors for [Bmim](+)[Br](-), [Bmim](+)[Cl], [Bmim](+)[BF4](-), [Bmim](+)[PF6](-), and [BPy](+)[Cl](-) as 624, 748, 823, 927, and 1768 CTUe/kg, respectively. IL Production life cycle inventories were modeled and utilized to estimate their production-side ecotoxicity impacts. Literature on environmental aspects of ILs propagates either their green characteristics (no air emissions and high recyclability) or their nongreen aspects due to toxicity concerns of their release to water. This study adds a third dimension by showing that the upstream ecotoxicity impacts of producing ILs could outweigh the potential ecotoxicity impacts of direct release during use. Furthermore, for the studied ILs, an average of 83% of ecotoxicity impacts associated with their production can be linked to chemicals and materials released during the upstream synthesis steps, while only 17% of ecotoxicity impacts relate to life-cycle energy consumption. The findings underscore the need to develop sustainable synthesis routes, tight control over chemical releases during production, and careful selection of precursor materials and production processes.
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Affiliation(s)
- Amirhossein Mehrkesh
- Center for Sustainable Infrastructure Systems, University of Colorado Denver , Denver, Colorado 80217, United States
| | - Arunprakash T Karunanithi
- Center for Sustainable Infrastructure Systems, University of Colorado Denver , Denver, Colorado 80217, United States
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32
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p-Si(1 1 1):H/ionic liquid interface investigated through a combination of electrochemical measurements and reflection high energy electron diffraction surface analysis in vacuum. Chem Phys Lett 2016. [DOI: 10.1016/j.cplett.2016.05.026] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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33
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Smirnov E, Peljo P, Scanlon MD, Gumy F, Girault HH. Self-healing gold mirrors and filters at liquid-liquid interfaces. NANOSCALE 2016; 8:7723-7737. [PMID: 27001646 DOI: 10.1039/c6nr00371k] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The optical and morphological properties of lustrous metal self-healing liquid-like nanofilms were systematically studied for different applications (e.g., optical mirrors or filters). These nanofilms were formed by a one-step self-assembly methodology of gold nanoparticles (AuNPs) at immiscible water-oil interfaces, previously reported by our group. We investigated a host of experimental variables and herein report their influence on the optical properties of nanofilms: AuNP mean diameter, interfacial AuNP surface coverage, nature of the organic solvent, and nature of the lipophilic organic molecule that caps the AuNPs in the interfacial nanofilm. To probe the interfacial gold nanofilms we used in situ (UV-vis-NIR spectroscopy and optical microscopy) as well as ex situ (SEM and TEM of interfacial gold nanofilms transferred to silicon substrates) techniques. The interfacial AuNP surface coverage strongly influenced the morphology of the interfacial nanofilms, and in turn their maximum reflectance and absorbance. We observed three distinct morphological regimes; (i) smooth 2D monolayers of "floating islands" of AuNPs at low surface coverages, (ii) a mixed 2D/3D regime with the beginnings of 3D nanostructures consisting of small piles of adsorbed AuNPs even under sub-full-monolayer conditions and, finally, (iii) a 3D regime characterised by the 2D full-monolayer being covered in significant piles of adsorbed AuNPs. A maximal value of reflectance reached 58% in comparison with a solid gold mirror, when 38 nm mean diameter AuNPs were used at a water-nitrobenzene interface. Meanwhile, interfacial gold nanofilms prepared with 12 nm mean diameter AuNPs exhibited the highest extinction intensities at ca. 690 nm and absorbance around 90% of the incident light, making them an attractive candidate for filtering applications. Furthermore, the interparticle spacing, and resulting interparticle plasmon coupling derived optical properties, varied significantly on replacing tetrathiafulvalene with neocuproine as the AuNP capping ligand in the nanofilm. These interfacial nanofilms formed with neocuproine and 38 nm mean diameter AuNPs, at monolayer surface coverages and above, were black due to aggregation and broadband absorbance.
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Affiliation(s)
- Evgeny Smirnov
- Laboratoire d'Electrochimie Physique et Analytique, Ecole Polytechnique Fédérale de Lausanne, Rue de l'Industrie 17, CH-1951 Sion, Switzerland.
| | - Pekka Peljo
- Laboratoire d'Electrochimie Physique et Analytique, Ecole Polytechnique Fédérale de Lausanne, Rue de l'Industrie 17, CH-1951 Sion, Switzerland.
| | - Micheál D Scanlon
- Department of Chemistry, the Tyndall National Institute and the Analytical & Biological Chemistry Research Facility (ABCRF), University College Cork, Cork, Ireland
| | - Frederic Gumy
- Laboratoire d'Electrochimie Physique et Analytique, Ecole Polytechnique Fédérale de Lausanne, Rue de l'Industrie 17, CH-1951 Sion, Switzerland.
| | - Hubert H Girault
- Laboratoire d'Electrochimie Physique et Analytique, Ecole Polytechnique Fédérale de Lausanne, Rue de l'Industrie 17, CH-1951 Sion, Switzerland.
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34
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Theoretical Studies on the Adsorption of 1-Butyl-3-methyl-imidazolium-hexafluorophosphate (BMI/PF $$_6$$ 6 ) on Au(100) Surfaces. Top Catal 2016. [DOI: 10.1007/s11244-016-0552-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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35
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Dong K, Zhang S, Wang J. Understanding the hydrogen bonds in ionic liquids and their roles in properties and reactions. Chem Commun (Camb) 2016; 52:6744-64. [PMID: 27042709 DOI: 10.1039/c5cc10120d] [Citation(s) in RCA: 162] [Impact Index Per Article: 20.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Ionic liquids (ILs) have many potential applications in the chemical industry. In order to understand ILs, their molecular details have been extensively investigated. Intuitively, electrostatic forces are solely important in ILs. However, experiments and calculations have provided strong evidence for the existence of H-bonds in ILs and their roles in the properties and applications of ILs. As a structure-directing force, H-bonds are responsible for ionic pairing, stacking and self-assembling. Their geometric structure, interaction energy and electronic configuration in the ion-pairs of imidazolium-based ILs and protic ionic liquids (PILs) show a great number of differences compared to conventional H-bonds. In particular, their cooperation with electrostatic, dispersion and π interactions embodies the physical nature of H-bonds in ILs, which anomalously influences their properties, leading to a decrease in their melting points and viscosities and thus fluidizing them. Using ILs as catalysts and solvents, many reactions can be activated by the presence of H-bonds, which reduce the reaction barriers and stabilize the transition states. In the dissolution of lignocellulosic biomass by ILs, H-bonds exhibit a most important role in disrupting the H-bonding network of cellulose and controlling microscopic ordering into domains. In this article, a critical review is presented regarding the structural features of H-bonds in ILs and PILs, the correlation between H-bonds and the properties of ILs, and the roles of H-bonds in typical reactions.
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Affiliation(s)
- Kun Dong
- State Key Laboratory of Multiphase Complex System, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, P. R. China.
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36
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Ionic liquids based gemini cationic surfactants as corrosion inhibitors for carbon steel in hydrochloric acid solution. J Mol Liq 2016. [DOI: 10.1016/j.molliq.2016.01.066] [Citation(s) in RCA: 77] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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37
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Fujita A, Matsumoto Y, Takeuchi M, Ryuto H, Takaoka GH. Growth behavior of gold nanoparticles synthesized in unsaturated fatty acids by vacuum evaporation methods. Phys Chem Chem Phys 2016; 18:5464-70. [PMID: 26821883 DOI: 10.1039/c5cp07323e] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Physical vapor evaporation of metals on low vapor pressure liquids is a simple and clean method to synthesize nanoparticles and thin films, though only little work has been conducted so far. Here, gold nanoparticles were synthesized by vacuum evaporation (VE) methods in ricinoleic acid and oleic acid, two typical unsaturated fatty acids (UFAs). The two solvents formed black aggregates after deposition and then shrunk and finally disappeared with the progress of time. By transmission electron microscopy (TEM) images, nanoparticles in ricinoleic acids formed aggregates and then dispersed by time, while in oleic acid big aggregates were not observed in all timescales. From TEM images and small angle X-ray scattering (SAXS) measurements, the mean size of the nanoparticles was about 4 nm in both ricinoleic and oleic acids. UV-Vis spectra were also taken as a function of time and the results were consistent with the growth behavior presumed by TEM images. Air exposure had an influence on the behavior of the sample triggering the nanoparticle formation in both solvents. From control experiments, we discovered that oxygen gas triggered the phenomenon and nanoparticles function as a catalyst for the oxidation of the UFAs. It stimulates the phenomenon and in ricinoleic acid, specifically, electrons are transferred from riconleic acid to the gold nanoparticles, enhancing the surface potential of the nanoparticles and the repulsive force between their electronic double layers.
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Affiliation(s)
- Akito Fujita
- Photonics and Electronics Science and Engineering Center, Kyoto University, Kyoto 615-8510, Japan.
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38
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Liu H, Jiang L. Wettability by Ionic Liquids. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2016; 12:9-15. [PMID: 26619157 DOI: 10.1002/smll.201501526] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2015] [Revised: 07/20/2015] [Indexed: 06/05/2023]
Abstract
Ionic liquids (ILs) have become particularly attractive recently because they have demonstrated themselves to be important construction units in the broad fields of chemistry and materials science, from catalysis and synthesis to analysis and electrochemistry, from functional fluids to clean energy, from nanotechnology to functional materials. One of the greatest issues that determines the performance of ILs is the wettability of correlated surfaces. In this concept article, the key developments and issues in IL wettability are surveyed, including the electrowetting of ILs in gas-liquid-solid systems and liquid-liquid-solid systems, ILs as useful probe fluids, the superwettability of Ils, and future directions in IL wettability. This should generate extensive interest in the field and encourage more scientists to engage in this area to tackle its scientific challenges.
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Affiliation(s)
- Hongliang Liu
- Laboratory of Bio-inspired Smart Interface Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, PR China
| | - Lei Jiang
- Laboratory of Bio-inspired Smart Interface Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, PR China
- Beijing National Laboratory of Molecular Sciences (BNLMS), Key Laboratory of Organic Solid, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, PR China
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39
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Abstract
The ionic liquid literature has grown at a remarkable rate since 1998, making it increasingly difficult to assess the important research directions and the underlying, fundamental understanding of ionic liquids.
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Affiliation(s)
- Maggel Deetlefs
- QUILL Research Centre
- School of Chemistry and Chemical Engineering
- The Queen’s University of Belfast
- Belfast
- UK
| | - Markus Fanselow
- QUILL Research Centre
- School of Chemistry and Chemical Engineering
- The Queen’s University of Belfast
- Belfast
- UK
| | - Kenneth R. Seddon
- QUILL Research Centre
- School of Chemistry and Chemical Engineering
- The Queen’s University of Belfast
- Belfast
- UK
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40
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Xiao-Dan W, Chun H, Hong-Tao F. Research on the Thermodynamic Properties of the Room Temperature Ionic Liquid [BMIM][ClO3]. J SOLUTION CHEM 2015. [DOI: 10.1007/s10953-015-0380-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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41
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Sippel P, Lunkenheimer P, Krohns S, Thoms E, Loidl A. Importance of liquid fragility for energy applications of ionic liquids. Sci Rep 2015; 5:13922. [PMID: 26355037 PMCID: PMC4564824 DOI: 10.1038/srep13922] [Citation(s) in RCA: 83] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2015] [Accepted: 08/11/2015] [Indexed: 01/27/2023] Open
Abstract
Ionic liquids (ILs) are salts that are liquid close to room temperature. Their possible applications are numerous, e.g., as solvents for green chemistry, in various electrochemical devices, and even for such "exotic" purposes as spinning-liquid mirrors for lunar telescopes. Here we concentrate on their use for new advancements in energy-storage and -conversion devices: Batteries, supercapacitors or fuel cells using ILs as electrolytes could be important building blocks for the sustainable energy supply of tomorrow. Interestingly, ILs show glassy freezing and the universal, but until now only poorly understood dynamic properties of glassy matter, dominate many of their physical properties. We show that the conductivity of ILs, an essential figure of merit for any electrochemical application, depends in a systematic way not only on their glass temperature but also on the so-called fragility, characterizing the non-canonical super-Arrhenius temperature dependence of their ionic mobility.
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Affiliation(s)
- P. Sippel
- Experimental Physics V, Center for Electronic Correlations and Magnetism, University of Augsburg, 86159 Augsburg, Germany
| | - P. Lunkenheimer
- Experimental Physics V, Center for Electronic Correlations and Magnetism, University of Augsburg, 86159 Augsburg, Germany
| | - S. Krohns
- Experimental Physics V, Center for Electronic Correlations and Magnetism, University of Augsburg, 86159 Augsburg, Germany
| | - E. Thoms
- Experimental Physics V, Center for Electronic Correlations and Magnetism, University of Augsburg, 86159 Augsburg, Germany
| | - A. Loidl
- Experimental Physics V, Center for Electronic Correlations and Magnetism, University of Augsburg, 86159 Augsburg, Germany
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42
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Simple one step synthesis of gemini cationic surfactant-based ionic liquids: Physicochemical, surface properties and biological activity. J Mol Liq 2015. [DOI: 10.1016/j.molliq.2015.05.054] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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43
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Gupta R, Gamare J, Jayachandran K, Gupta SK, Lohithakshan KV, Kamat JV. Electrochemical, Thermodynamic and Spectroscopic Investigations of Ce
III
in a 1‐Ethyl‐3‐methylimidazolium Ethyl Sulfate (EMIES) Ionic Liquid. Eur J Inorg Chem 2015. [DOI: 10.1002/ejic.201500671] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Ruma Gupta
- Fuel Chemistry Division, Bhabha Atomic Research Centre, Mumbai 400085, India http://www.barc.gov.in/
| | - Jayashree Gamare
- Fuel Chemistry Division, Bhabha Atomic Research Centre, Mumbai 400085, India http://www.barc.gov.in/
| | - Kavitha Jayachandran
- Fuel Chemistry Division, Bhabha Atomic Research Centre, Mumbai 400085, India http://www.barc.gov.in/
| | - Santosh K. Gupta
- Radiochemistry Division, Bhabha Atomic Research Centre, Mumbai 400085, India
| | - Kaiprath V. Lohithakshan
- Fuel Chemistry Division, Bhabha Atomic Research Centre, Mumbai 400085, India http://www.barc.gov.in/
| | - Jayashree V. Kamat
- Fuel Chemistry Division, Bhabha Atomic Research Centre, Mumbai 400085, India http://www.barc.gov.in/
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44
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Abstract
Ionic liquids have become commonplace materials found in research laboratories the world over, and are increasingly utilised in studies featuring water as co-solvent. It is reported herein that proton activities, aH (+) , originating from auto-protolysis of H2O molecules, are significantly altered in mixtures with common ionic liquids comprised of Cl(-), [HSO4 ](-), [CH3SO4 ](-), [CH3COO](-), [BF4](-), relative to pure water. paH (+) values, recorded in partially aqueous media as -log(aH (+)), are observed over a wide range (∼0-13) as a result of hydrolysis (or acid dissociation) of liquid salt ions to their associated parent molecules (or conjugate bases). Brønsted-Lowry acid-base character of ionic liquid ions observed is rooted in equilibria known to govern the highly developed aqueous chemistry of classical organic and inorganic salts, as their well-known aqueous pKs dictate. Classical salt behaviour observed for both protic and aprotic ions in the presence of water suggests appropriate attention need be given to relevant chemical systems in order to exploit, or avoid, the nature of the medium formed.
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Affiliation(s)
- Gordon W Driver
- Department of Chemistry, Umeå University, KBC-huset, Linnaeus väg 10, 90187 Umeå (Sweden).
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45
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The antimicrobial potential of ionic liquids: A source of chemical diversity for infection and biofilm control. Int J Antimicrob Agents 2015; 46:131-9. [DOI: 10.1016/j.ijantimicag.2015.02.016] [Citation(s) in RCA: 123] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2014] [Revised: 02/12/2015] [Accepted: 02/13/2015] [Indexed: 01/09/2023]
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46
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Affiliation(s)
- Robert Hayes
- Discipline
of Chemistry, The University of Newcastle, NSW 2308, Callaghan, Australia
| | - Gregory G. Warr
- School
of Chemistry, The University of Sydney, NSW 2006, Sydney, Australia
| | - Rob Atkin
- Discipline
of Chemistry, The University of Newcastle, NSW 2308, Callaghan, Australia
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47
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Liu H, Ding Y, Ao Z, Zhou Y, Wang S, Jiang L. Fabricating surfaces with tunable wettability and adhesion by ionic liquids in a wide range. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2015; 11:1782-1786. [PMID: 25408487 DOI: 10.1002/smll.201403021] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/13/2014] [Indexed: 06/04/2023]
Abstract
A series of surfaces that can either be fully wetted or non-wetted by three kinds of ionic liquids (ILs) are successfully designed by rationally controlling surface chemistries and structures. Meanwhile, the adhesion forces between these surfaces and the ILs can also be effectively modulated in a wide range. This fundamental research will greatly promote the development of IL-based materials in practical applications.
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Affiliation(s)
- Hongliang Liu
- Laboratory of Bio-inspired Smart Interface Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
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48
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Sugioka D, Kameyama T, Kuwabata S, Torimoto T. Single-step preparation of two-dimensionally organized gold particles via ionic liquid/metal sputter deposition. Phys Chem Chem Phys 2015; 17:13150-9. [DOI: 10.1039/c5cp01602a] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Sputter deposition of Au onto an ionic liquid with a hydroxyl-functionalized cation produces a uniform monoparticle film on the liquid surface. The size of nanoparticles is controlled by the sputtering conditions.
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Affiliation(s)
- Daisuke Sugioka
- Graduate School of Engineering
- Nagoya University
- Furo-cho
- Chikusa-ku
- Japan
| | - Tatsuya Kameyama
- Graduate School of Engineering
- Nagoya University
- Furo-cho
- Chikusa-ku
- Japan
| | | | - Tsukasa Torimoto
- Graduate School of Engineering
- Nagoya University
- Furo-cho
- Chikusa-ku
- Japan
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49
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Gupta AK, Gardas RL. The constitutive behavior of ammonium ionic liquids: a physiochemical approach. RSC Adv 2015. [DOI: 10.1039/c5ra02391b] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A huge number of possible molecular variants often forms a puzzle about their identity and integrity to processes, which can be resolved by adopting a concrete selection procedure of significance.
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Affiliation(s)
- Akash Kumar Gupta
- Department of Chemistry
- Indian Institute of Technology Madras
- Chennai-600 036
- India
| | - Ramesh L. Gardas
- Department of Chemistry
- Indian Institute of Technology Madras
- Chennai-600 036
- India
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50
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Haller PD, Gupta M. Synthesis of Polymer Nanoparticles via Vapor Phase Deposition onto Liquid Substrates. Macromol Rapid Commun 2014; 35:2000-4. [DOI: 10.1002/marc.201400436] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2014] [Revised: 08/29/2014] [Indexed: 11/08/2022]
Affiliation(s)
- Patrick D. Haller
- Mork Family Department of Chemical Engineering and Materials Science; University of Southern California; 925 Bloom Walk Los Angeles CA 90089 USA
| | - Malancha Gupta
- Mork Family Department of Chemical Engineering and Materials Science; University of Southern California; 925 Bloom Walk Los Angeles CA 90089 USA
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