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Anion Architecture Controls Structure and Electroresponsivity of Anhalogenous Ionic Liquids in a Sustainable Fluid

Li, Sichao (författare)
Division of Surface and Corrosion Science, School of Engineering Sciences in Chemistry, Biotechnology and Health, KTH Royal Institute of Technology, Stockholm SE-100 44, Sweden
Hammond, Oliver S. (författare)
Department of Materials and Environmental Chemistry, Stockholm University, Stockholm SE-114 18, Sweden; intelligent Advanced Materials, Department of Biological & Chemical Engineering and iNANO, Aarhus University, Aarhus C 8000, Denmark
Nelson, Andrew (författare)
Australian Centre for Neutron Scattering, ANSTO, Lucas Heights, New South Wales 2234, Australia
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de Campo, Liliana (författare)
Australian Centre for Neutron Scattering, ANSTO, Lucas Heights, New South Wales 2234, Australia
Moir, Michael (författare)
National Deuteration Facility, ANSTO, Lucas Heights, New South Wales 2234, Australia
Recsei, Carl (författare)
National Deuteration Facility, ANSTO, Lucas Heights, New South Wales 2234, Australia
Shimpi, Manishkumar R. (författare)
Luleå tekniska universitet,Kemiteknik,Department of Materials and Environmental Chemistry, Stockholm University, Stockholm SE-114 18, Sweden,Department of Materials and Environmental Chemistry, Stockholm University, Stockholm, Sweden; Chemistry of Interfaces, Department of Civil and Environmental Engineering, Luleå University of Technology, Luleå, Sweden
Glavatskih, Sergei (författare)
System and Component Design, Department of Engineering Design, KTH Royal Institute of Technology, Stockholm SE-100 44, Sweden; School of Chemistry, University of New South Wales, Sydney, New South Wales 2052, Australia; Department of Electromechanical, Systems and Metal Engineering, Ghent University, Ghent B-9052, Belgium
Pilkington, Georgia A. (författare)
Division of Surface and Corrosion Science, School of Engineering Sciences in Chemistry, Biotechnology and Health, KTH Royal Institute of Technology, Stockholm SE-100 44, Sweden
Mudring, Anja-Verena (författare)
Umeå universitet,Institutionen för fysik,Department of Materials and Environmental Chemistry, Stockholm University, Stockholm SE-114 18, Sweden; intelligent Advanced Materials, Department of Biological & Chemical Engineering and iNANO, Aarhus University, Aarhus C 8000, Denmark; Department of Physics, Umeå University, Umeå SE-901 87, Sweden
Rutland, Mark W. (författare)
Division of Surface and Corrosion Science, School of Engineering Sciences in Chemistry, Biotechnology and Health, KTH Royal Institute of Technology, Stockholm SE-100 44, Sweden; School of Chemistry, University of New South Wales, Sydney, New South Wales 2052, Australia; Bioeconomy and Health Department Materials and Surface Design, RISE Research Institutes of Sweden, Stockholm SE-114 28, Sweden; Laboratoire de Tribologie et Dynamique des Systèmes, École Centrale de Lyon, Ecully Cedex 69134, France
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 (creator_code:org_t)
American Chemical Society, 2024
2024
Engelska.
Ingår i: Journal of Physical Chemistry B. - : American Chemical Society. - 1520-6106 .- 1520-5207. ; 128:17, s. 4231-4242
Relaterad länk:
https://doi.org/10.1...
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https://doi.org/10.1...
https://urn.kb.se/re...
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  • Tidskriftsartikel (refereegranskat)
Abstract Ämnesord
Stäng  
  • Three nonhalogenated ionic liquids (ILs) dissolved in 2-ethylhexyl laurate (2-EHL), a biodegradable oil, are investigated in terms of their bulk and electro-interfacial nanoscale structures using small-angle neutron scattering (SANS) and neutron reflectivity (NR). The ILs share the same trihexyl(tetradecyl)phosphonium ([P6,6,6,14]+) cation paired with different anions, bis(mandelato)borate ([BMB]−), bis(oxalato)borate ([BOB]−), and bis(salicylato)borate ([BScB]−). SANS shows a high aspect ratio tubular self-assembly structure characterized by an IL core of alternating cations and anions with a 2-EHL-rich shell or corona in the bulk, the geometry of which depends upon the anion structure and concentration. NR also reveals a solvent-rich interfacial corona layer. Their electro-responsive behavior, pertaining to the structuring and composition of the interfacial layers, is also influenced by the anion identity. [P6,6,6,14][BOB] exhibits distinct electroresponsiveness to applied potentials, suggesting an ion exchange behavior from cation-dominated to anion-rich. Conversely, [P6,6,6,14][BMB] and [P6,6,6,14][BScB] demonstrate minimal electroresponses across all studied potentials, related to their different dissociative and diffusive behavior. A mixed system is dominated by the least soluble IL but exhibits an increase in disorder. This work reveals the subtlety of anion architecture in tuning bulk and electro-interfacial properties, offering valuable molecular insights for deploying nonhalogenated ILs as additives in biodegradable lubricants and supercapacitors.

Ämnesord

NATURVETENSKAP  -- Kemi -- Fysikalisk kemi (hsv//swe)
NATURAL SCIENCES  -- Chemical Sciences -- Physical Chemistry (hsv//eng)

Nyckelord

Chemistry of Interfaces
Gränsytors kemi

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