Viologen-templated arrays of cucurbit[7]uril-modified iron-oxide nanoparticles.
Chemistry
; 21(12): 4607-13, 2015 Mar 16.
Article
em En
| MEDLINE
| ID: mdl-25582844
ABSTRACT
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 12 inclusion complexes that involve DPV(2+) and two CB[7] macrocycles was first obtained in solution by (1)Hâ
NMR and emission spectroscopy. DPV(2+) was found to induce self-assembly of nanoparticle arrays (DPV(2+)âCB[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.
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1
Coleções:
01-internacional
Base de dados:
MEDLINE
Idioma:
En
Revista:
Chemistry
Assunto da revista:
QUIMICA
Ano de publicação:
2015
Tipo de documento:
Article