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Viologen‐Templated Arrays of Cucurbit[7]uril‐Modified Iron‐Oxide Nanoparticles |
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| Authors: | Dr Farah Benyettou Dr Katia Nchimi‐Nono Dr Mustapha Jouiad Dr Yoann Lalatonne Dr Irena Milosevic Prof Laurence Motte Prof John‐Carl Olsen Prof Na'il Saleh Prof Ali Trabolsi |
| Institution: | 1. New York University Abu Dhabi, Abu Dhabi (United Arab Emirates);2. Masdar Institute of Science and Technology, Department of Mechanical and Materials Engineering, Abu Dhabi (United Arab Emirates);3. Université Paris?13, Sorbonne Paris Cité, Laboratoire CSPBAT, CNRS, (UMR 7244), 93017, Bobigny (France);4. School of Sciences, Indiana University Kokomo, Kokomo, IN 46904 (USA);5. United Arab Emirates University, College of Science, Department of Chemistry, P.O. Box?15551, Al‐Ain (United Arab Emirates) |
| Abstract: | Magnetic and fluorescent assemblies of iron‐oxide nanoparticles (NPs) were constructed by threading a viologen‐based ditopic ligand, DPV2+, into the cavity of cucurbituril (CB7]) macrocycles adsorbed on the surface of the NPs. Evidence for the formation of 1:2 inclusion complexes that involve DPV2+ and two CB7] macrocycles was first obtained in solution by 1H NMR and emission spectroscopy. DPV2+ was found to induce self‐assembly of nanoparticle arrays (DPV2+?CB7]NPs) by bridging CB7] 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. |
| Keywords: | microporosity self‐assembly solid‐state fluorescence superparamagnetic nanoparticles surface modification |