Viologen-templated arrays of cucurbit[7]uril-modified iron-oxide nanoparticles

Farah Benyettou; Katia Nchimi- Nono; Mustapha Jouiad; Yoann Lalatonne; Irena Milosevic; Laurence Motte; John Carl Olsen; NA'Il Saleh; Ali Trabolsi

doi:10.1002/chem.201405774

Viologen-templated arrays of cucurbit[7]uril-modified iron-oxide nanoparticles

Farah Benyettou, Katia Nchimi- Nono, Mustapha Jouiad, Yoann Lalatonne, Irena Milosevic, Laurence Motte, John Carl Olsen, NA'Il Saleh, Ali Trabolsi

Chemistry

Research output: Contribution to journal › Article › peer-review

Abstract

Magnetic and fluorescent assemblies of iron-oxide nanoparticles (NPs) were constructed by threading a violo-gen-based ditopic ligand, DPV²⁺ , 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 DPV²⁺ and two CB[7] macrocycles was first obtained in solution by 1H NMR and emission spectroscopy. DPV²⁺ was found to induce self-assembly of nanoparticle arrays (DPV² + ⊂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.

Original language	English (US)
Pages (from-to)	4607-4613
Number of pages	7
Journal	Chemistry - A European Journal
Volume	21
Issue number	12
DOIs	https://doi.org/10.1002/chem.201405774
State	Published - Mar 16 2015

Keywords

Microporosity
Self-assembly
Solid-state fluorescence
Superparamagnetic nanoparticles
Surface modification

ASJC Scopus subject areas

General Chemistry
Catalysis
Organic Chemistry

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10.1002/chem.201405774

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title = "Viologen-templated arrays of cucurbit[7]uril-modified iron-oxide nanoparticles",

abstract = "Magnetic and fluorescent assemblies of iron-oxide nanoparticles (NPs) were constructed by threading a violo-gen-based ditopic ligand, DPV2+ , 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 DPV2+ and two CB[7] macrocycles was first obtained in solution by 1H NMR and emission spectroscopy. DPV2+ was found to induce self-assembly of nanoparticle arrays (DPV2 + ⊂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.",

keywords = "Microporosity, Self-assembly, Solid-state fluorescence, Superparamagnetic nanoparticles, Surface modification",

author = "Farah Benyettou and {Nchimi- Nono}, Katia and Mustapha Jouiad and Yoann Lalatonne and Irena Milosevic and Laurence Motte and Olsen, {John Carl} and NA'Il Saleh and Ali Trabolsi",

note = "Publisher Copyright: {\textcopyright} 2015 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim.",

year = "2015",

month = mar,

day = "16",

doi = "10.1002/chem.201405774",

language = "English (US)",

volume = "21",

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T1 - Viologen-templated arrays of cucurbit[7]uril-modified iron-oxide nanoparticles

AU - Benyettou, Farah

AU - Nchimi- Nono, Katia

AU - Jouiad, Mustapha

AU - Lalatonne, Yoann

AU - Milosevic, Irena

AU - Motte, Laurence

AU - Olsen, John Carl

AU - Saleh, NA'Il

AU - Trabolsi, Ali

PY - 2015/3/16

Y1 - 2015/3/16

N2 - Magnetic and fluorescent assemblies of iron-oxide nanoparticles (NPs) were constructed by threading a violo-gen-based ditopic ligand, DPV2+ , 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 DPV2+ and two CB[7] macrocycles was first obtained in solution by 1H NMR and emission spectroscopy. DPV2+ was found to induce self-assembly of nanoparticle arrays (DPV2 + ⊂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.

AB - Magnetic and fluorescent assemblies of iron-oxide nanoparticles (NPs) were constructed by threading a violo-gen-based ditopic ligand, DPV2+ , 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 DPV2+ and two CB[7] macrocycles was first obtained in solution by 1H NMR and emission spectroscopy. DPV2+ was found to induce self-assembly of nanoparticle arrays (DPV2 + ⊂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.

KW - Microporosity

KW - Self-assembly

KW - Solid-state fluorescence

KW - Superparamagnetic nanoparticles

KW - Surface modification

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Viologen-templated arrays of cucurbit[7]uril-modified iron-oxide nanoparticles

Abstract

Keywords

ASJC Scopus subject areas

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