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  Manufacturing nanoparticles with orthogonally adjustable dispersibility in hydrocarbons, fluorocarbons, and water

Zeininger, L., Stiegler, L., Portilla, L., Halik, M., & Hirsch, A. (2018). Manufacturing nanoparticles with orthogonally adjustable dispersibility in hydrocarbons, fluorocarbons, and water. ChemistryOpen, 7(4), 282-287. doi:10.1002/open.201800011.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0005-4609-3 Version Permalink: http://hdl.handle.net/21.11116/0000-0005-460C-0
Genre: Journal Article

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Zeininger, Lukas1, Author              
Stiegler, L.M.S., Author
Portilla, L., Author
Halik, M., Author
Hirsch, A., Author
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1External Organizations, ou_persistent22              

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 Abstract: We describe a universal wet-chemical shell-by-shell coating procedure resulting in colloidal titanium dioxide (TiO2) and iron oxide (Fe3O4) nanoparticles with dynamically and reversibly tunable surface energies. A strong covalent surface functionalization is accomplished by using long-chained alkyl-, triethylenglycol-, and perfluoroalkylphosphonic acids, yielding highly stabilized core–shell nanoparticles with hydrophobic, hydrophilic, or superhydrophobic/fluorophilic surface characteristics. This covalent functionalization sequence is extended towards a second noncovalent attachment of tailor-made nonionic amphiphilic molecules to the pristine coated core–shell nanoparticles via solvophobic (i.e. either hydrophobic, lipophobic, or fluorophobic) interactions. Thereby, orthogonal tuning of the surface energies of nanoparticles via noncovalent interactions is accomplished. As a result, this versatile bilayer coating process enables reversible control over the colloidal stability of the metal oxide nanoparticles in fluorocarbons, hydrocarbons, and water. © 2017 The Authors. Published by Wiley-VCH Verlag GmbH Co. KGaA.

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 Dates: 2018
 Publication Status: Published in print
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 Identifiers: DOI: 10.1002/open.201800011
DOI: 10.1002/open.201800031
BibTex Citekey: Zeininger2018282
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Title: ChemistryOpen
Source Genre: Journal
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Publ. Info: Weinheim : Wiley-VCH
Pages: - Volume / Issue: 7 (4) Sequence Number: - Start / End Page: 282 - 287 Identifier: ISSN: 2191-1363