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Highly Efficient Encapsulation and Phase Separation of Apolar Molecules by Magnetic Shell‐by‐Shell‐Coated Nanocarriers in Water
Author(s) -
Luchs Tobias,
Sarcletti Marco,
Zeininger Lukas,
Portilla Luis,
Fischer Christian,
Harder Sjoerd,
Halik Marcus,
Hirsch Andreas
Publication year - 2018
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201802419
Subject(s) - nanocarriers , amphiphile , chemistry , supramolecular chemistry , chemical engineering , nanoparticle , molecule , miniemulsion , shell (structure) , covalent bond , nanotechnology , materials science , organic chemistry , copolymer , polymerization , polymer , engineering , composite material
We report on the development of a supramolecular nanocarrier concept that allows for the encapsulation and separation of small apolar molecules from water. The nanocarriers consist of shell‐by‐shell‐coated nanoparticles such as TiO 2 and ferromagnetic Fe 3 O 4 . The first ligand shell is provided by covalently bound hexadecyl phosphonic acid (PAC 16 ) and the second shell by noncovalently assembled amphiphiles rendering the hybrid architecture soluble in water. Agitation of these constructs with water containing the hydrocarbons G1 – G4 , the fluorescent marker G5 , the polychlorinated biphenyl PCB 77, or crude oil leads to a very efficient uptake (up to 411 %) of the apolar contaminant. In case of the hybrids containing a Fe 3 O 4 core, straightforward phase separation by the action of an external magnet is provided. The load can easily be released by a final treatment with an organic solvent.