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Molecular Architect...
Molecular Architecture Effects on Bulk Nanostructure in Bis(Orthoborate) Ionic Liquids
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- Hammond, Oliver S. (author)
- Stockholms universitet,Institutionen för material- och miljökemi (MMK),Department of Materials and Environmental Chemistry, Stockholm University, Stockholm, SE-114 18, Sweden; Department of Biological and Chemical Engineering and iNANO, Aarhus University, Aarhus C, 8000, Denmark
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- Bousrez, Guillaume (author)
- Stockholms universitet,Institutionen för material- och miljökemi (MMK),Department of Materials and Environmental Chemistry, Stockholm University, Stockholm, SE-114 18, Sweden; Department of Biological and Chemical Engineering and iNANO, Aarhus University, Aarhus C, 8000, Denmark
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- Mehler, Filip (author)
- Division of Surface and Corrosion Science, School of Engineering Sciences in Chemistry, Biotechnology and Health, KTH Royal Institute of Technology, Stockholm, SE-100 40, Sweden
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- Li, Sichao (author)
- Division of Surface and Corrosion Science, School of Engineering Sciences in Chemistry, Biotechnology and Health, KTH Royal Institute of Technology, Stockholm, SE-100 40, Sweden
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- Shimpi, Manishkumar R., 1980- (author)
- Luleå tekniska universitet,Stockholms universitet,Institutionen för material- och miljökemi (MMK),Stockholm University, Sweden; Luleå University of Technology, Sweden,Kemiteknik,Department of Materials and Environmental Chemistry, Stockholm University, Stockholm, SE-114 18, Sweden
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- Doutch, James (author)
- ISIS Neutron & Muon Source, Science and Technology Facilities Council, Rutherford Appleton Laboratory, Harwell-Oxford, OX11 0QX, UK
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- Cavalcanti, Leide (author)
- ISIS Neutron & Muon Source, Science and Technology Facilities Council, Rutherford Appleton Laboratory, Harwell-Oxford, OX11 0QX, UK
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- Glavatskih, Sergei (author)
- Department of Engineering Design, KTH Royal Institute of Technology, Stockholm, SE-10044, Sweden; School of Chemistry, University of New South Wales, Sydney, 2052, Australia; Department of Electromechanical, Systems and Metal Engineering, Ghent University, Ghent, B-9052, Belgium
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- Antzutkin, Oleg N. (author)
- Luleå tekniska universitet,Kemiteknik
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- Rutland, Mark W., Professor (author)
- RISE,Material- och ytdesign,Division of Surface and Corrosion Science, School of Engineering Sciences in Chemistry, Biotechnology and Health, KTH Royal Institute of Technology, Stockholm, SE-100 40, Sweden; School of Chemistry, University of New South Wales, Sydney, 2052, Australia; Bioeconomy and Health Department Materials and Surface Design, RISE Research Institutes of Sweden, Stockholm, SE-114 86, Sweden; Laboratoire de Tribologie et Dynamique des Systèmes, École Centrale de Lyon, Lyon, 69130, France
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- Mudring, Anja-Verena, 1971- (author)
- Stockholms universitet,Institutionen för material- och miljökemi (MMK),Department of Materials and Environmental Chemistry, Stockholm University, Stockholm, SE-114 18, Sweden; Department of Biological and Chemical Engineering and iNANO, Aarhus University, Aarhus C, 8000, Denmark
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(creator_code:org_t)
- John Wiley and Sons Inc, 2023
- 2023
- English.
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In: Small. - : John Wiley and Sons Inc. - 1613-6810 .- 1613-6829. ; 29
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Abstract
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- A series of 19 ionic liquids (ILs) based on phosphonium and imidazolium cations of varying alkyl-chain lengths with the orthoborate anions bis(oxalato)borate [BOB]−, bis(mandelato)borate, [BMB]− and bis(salicylato)borate, [BScB]−, are synthesized and studied using small-angle neutron scattering (SANS). All measured systems display nanostructuring, with 1-methyl-3-n-alkyl imidazolium-orthoborates forming clearly bicontinuous L3 spongelike phases when the alkyl chains are longer than C6 (hexyl). L3 phases are fitted using the Teubner and Strey model, and diffusely-nanostructured systems are primarily fitted using the Ornstein-Zernicke correlation length model. Strongly-nanostructured systems have a strong dependence on the cation, with molecular architecture variation explored to determine the driving forces for self-assembly. The ability to form well-defined complex phases is effectively extinguished in several ways: methylation of the most acidic imidazolium ring proton, replacing the imidazolium 3-methyl group with a longer hydrocarbon chain, substitution of [BOB]− by [BMB]−, or exchanging the imidazolium for phosphonium systems, irrespective of phosphonium architecture. The results suggest there is only a small window of opportunity, in terms of molecular amphiphilicity and cation:anion volume matching, for the formation of stable extensive bicontinuous domains in pure bulk orthoborate-based ILs. Particularly important for self-assembly processes appear to be the ability to form H-bonding networks, which offer additional versatility in imidazolium systems. © 2023 The Authors.
Subject headings
- NATURVETENSKAP -- Kemi -- Fysikalisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Physical Chemistry (hsv//eng)
Keyword
- ionic liquids
- nanostructures
- orthoborates
- small angle neutron scattering
- Alkylation
- Negative ions
- Network architecture
- Neutron scattering
- Positive ions
- Alkyl chain lengths
- Bicontinuous
- Imidazolium
- Imidazolium cation
- Molecular architecture
- Nanostructured systems
- Ortho-borates
- Oxalato
- Phosphonium cations
- Small-angle neutron scattering
- Chemistry of Interfaces
Publication and Content Type
- ref (subject category)
- art (subject category)
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Hammond, Oliver ...
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Bousrez, Guillau ...
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Mehler, Filip
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Li, Sichao
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Shimpi, Manishku ...
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Doutch, James
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Cavalcanti, Leid ...
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Glavatskih, Serg ...
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Antzutkin, Oleg ...
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Rutland, Mark W. ...
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Mudring, Anja-Ve ...
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- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Chemist ...
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Small
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RISE
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Stockholm University
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Luleå University of Technology