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Evolution of structural dimensions in mesoporous template precursor from hexagonal lyotropic liquid crystals
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- Wang, Guang (författare)
- Deakin University, Institute for Frontier Materials, Locked Bag 20000, Geelong, 3220, VIC, Australia; Institute of Macromolecular Chemistry, Czech Academy of Sciences, Heyrovského nám.2, Prague 6, 162062, Czech Republic
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- Garvey, Christopher J. (författare)
- Malmö universitet,Institutionen för biomedicinsk vetenskap (BMV),Biofilms Research Center for Biointerfaces,Australian Nuclear Science and Technology Organization, Locked Bag 2001, Kirrawee DC, 2232, NSW, Australia; Lund Institute for Advanced Neutron and X-ray Scattering, Sweden
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- Zhang, Juan (författare)
- Deakin University, Institute for Frontier Materials, Locked Bag 20000, Geelong, 3220, VIC, Australia
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- Deakin University, Institute for Frontier Materials, Locked Bag 20000, Geelong, 3220, VIC, Australia; Institute of Macromolecular Chemistry, Czech Academy of Sciences, Heyrovského nám2, Prague 6, 162062, Czech Republic Institutionen för biomedicinsk vetenskap (BMV) (creator_code:org_t)
- Institute of Physics (IOP), 2020
- 2020
- Engelska.
- Ingår i: Journal of Physics. - : Institute of Physics (IOP). - 0953-8984 .- 1361-648X. ; 32:7
- Tidskriftsartikel (refereegranskat)
Abstract
Ämnesord
Stäng
- Producing nanopores from hexagonal lyotropic liquid crystals (LLCs) templates requires not only retaining phase morphology of the templates but also precisely controlling structural dimensions of unit cells. In this study, SAXS and H-2 NMR are used to investigate dimensional evolutions of ternary systems consisting of polymerizable species, (ethylene glycol) diacrylate (PEGDA) and/or 2-hydroxyethyl methacrylate (HEMA), in a LLCs template of hexagonally packed cylinders formed from dodecyl trimethylammonium bromide (DTAB) and water. With the addition of those polymerizable species, the system rearranges into a new hexagonal system with a smaller aggregation number, smaller pores and a thicker pore wall thickness. The hexagonal system will coexist with an aqueous-rich phase containing isotropically distributed DTAB if sufficient PEGDA is applied but the single hexagonal system could be restored by partially replacing the PEGDA with HEMA. The mobility of DTAB molecules within the aggregates varies depending on monomer compositions. The changes in structural dimensions of the unit cells and phase behaviors after adding polymerizable monomers allow dimensional control of mesochannels and potentially enable the control of selectivity and robustness of polymerized nanomaterials via molecular design.
Ämnesord
- NATURVETENSKAP -- Kemi -- Fysikalisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Physical Chemistry (hsv//eng)
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