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Time-Resolved SAXS ...
Time-Resolved SAXS Study of Polarity- and Surfactant-Controlled Superlattice Transformations of Oleate-Capped Nanocubes During Solvent Removal
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- Lv, Zhong-Peng (författare)
- Stockholms universitet,Institutionen för material- och miljökemi (MMK),Stockholm University, Sweden; Aalto University, Finland,Stockholm Univ, Dept Mat & Environm Chem, SE-10691 Stockholm, Sweden.;Aalto Univ, Dept Appl Phys, FI-00076 Espoo, Finland
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- Kapuscinski, Martin, 1989- (författare)
- Uppsala universitet,Stockholms universitet,Institutionen för material- och miljökemi (MMK),Stockholm University, Sweden; Uppsala University, Sweden,Institutionen för materialvetenskap,Stockholm Univ, Dept Mat & Environm Chem, SE-10691 Stockholm, Sweden
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- Járvás, Gabor (författare)
- University of Pannonia, Hungary,Univ Pannonia, Res Inst Biomol & Chem Engn, HU-8200 Veszprem, Hungary
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- Yu, Shun (författare)
- RISE,Material- och ytdesign,RISE Res Inst Sweden, Dept Mat & Surface Design, SE-22370 Lund, Sweden
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- Bergström, Lennart (författare)
- Stockholms universitet,Institutionen för material- och miljökemi (MMK),Stockholm University, Sweden,Stockholm Univ, Dept Mat & Environm Chem, SE-10691 Stockholm, Sweden
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(creator_code:org_t)
- 2022-05-06
- 2022
- Engelska.
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Ingår i: Small. - : John Wiley and Sons Inc. - 1613-6810 .- 1613-6829. ; 18:22
- Relaterad länk:
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Abstract
Ämnesord
Stäng
- Structural transformations and lattice expansion of oleate-capped iron oxide nanocube superlattices are studied by time-resolved small-angle X-ray scattering (SAXS) during solvent removal. The combination of conductor-like screening model for real solvents (COSMO-RS) theory with computational fluid dynamics (CFD) modeling provides information on the solvent composition and polarity during droplet evaporation. Evaporation-driven poor-solvent enrichment in the presence of free oleic acid results in the formation of superlattices with a tilted face-centered cubic (fcc) structure when the polarity reaches its maximum. The tilted fcc lattice expands subsequently during the removal of the poor solvent and eventually transforms to a regular simple cubic (sc) lattice during the final evaporation stage when only free oleic acid remains. Comparative studies show that both the increase in polarity as the poor solvent is enriched and the presence of a sufficient amount of added oleic acid is required to promote the formation of structurally diverse superlattices with large domain sizes. © 2022 The Authors.
Ämnesord
- NATURVETENSKAP -- Fysik -- Annan fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Other Physics Topics (hsv//eng)
- NATURVETENSKAP -- Kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences (hsv//eng)
- NATURVETENSKAP -- Kemi -- Fysikalisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Physical Chemistry (hsv//eng)
Nyckelord
- anisotropic nanoparticles
- small angle X-ray scattering
- superlattice transformation
- time-dependent measurements
- Computation theory
- Computational fluid dynamics
- Evaporation
- Iron oxides
- Oleic acid
- Solvents
- Nanocubes
- Poor solvents
- Solvent removal
- Structural transformation
- Surfactant-controlled
- Time dependent measurements
- Time-resolved
- X ray scattering
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- ref (ämneskategori)
- art (ämneskategori)
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