Premium
Viologen‐Templated Arrays of Cucurbit[7]uril‐Modified Iron‐Oxide Nanoparticles
Author(s) -
Benyettou Farah,
Nchimio Katia,
Jouiad Mustapha,
Lalatonne Yoann,
Milosevic Irena,
Motte Laurence,
Olsen JohnCarl,
Saleh Na'il,
Trabolsi Ali
Publication year - 2015
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.201405774
Subject(s) - viologen , cucurbituril , nanoparticle , iron oxide nanoparticles , supramolecular chemistry , molecule , magnetic nanoparticles , chemistry , fluorescence , iron oxide , nanotechnology , self assembly , adsorption , materials science , chemical engineering , inorganic chemistry , photochemistry , organic chemistry , physics , quantum mechanics , engineering
Magnetic and fluorescent assemblies of iron‐oxide nanoparticles (NPs) were constructed by threading a viologen‐based ditopic ligand, DPV 2+ , into the cavity of cucurbituril (CB[7]) macrocycles adsorbed on the surface of the NPs. Evidence for the formation of 1:2 inclusion complexes that involve DPV 2+ and two CB[7] macrocycles was first obtained in solution by 1 H NMR and emission spectroscopy. DPV 2+ was found to induce self‐assembly of nanoparticle arrays (DPV 2+ ⊂CB[7]NPs) by bridging CB[7] molecules on different NPs. The resulting viologen‐crosslinked iron‐oxide nanoparticles exhibited increased saturation magnetization and emission properties. This facile supramolecular approach to NP self‐assembly provides a platform for the synthesis of smart and innovative materials that can achieve a high degree of functionality and complexity and that are needed for a wide range of applications.
Accelerating Research
Robert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom
Address
John Eccles HouseRobert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom