access icon free Surfactant-assisted fabrication of microsheets of organic radical: interesting magnetic property and strong emission

Microstructured materials assembled from organic small molecules through non-covalent interactions have been relatively less explored but are a very fascinating field. A surfactant-assisted self-assembly process was applied to fabricate two-dimensional (2D) sheet-like microstructures of (E)-3-(3-oxo-3-phenylprop-1-enyl)-2,3′-biimidazo[1,2-a]pyridin-2′(3′H)-one (OPBIPO) radicals. The obtained results indicate that compared to the bulk OPBIPO counterpart, the coercive force of a 2D OPBIPO microsheet sample is enhanced, which can be attributed to the morphology anisotropy of microsheet structures. In addition, the photoluminescence spectra show that the emission intensity of the microsheet sample is higher than that of the bulk material. This surfactant-assisted self-assembly technology will provide useful information on the fabrication of organic radical microstructures with novel morphology-dependent magnetic behaviours.

Inspec keywords: photoluminescence; coercive force; organic compounds; magnetic anisotropy; crystal microstructure; self-assembly

Other keywords: coercive force; (E)-3-(3-oxo-3-phenylprop-1-enyl)-2,3′-biimidazo[1,2-a]pyridin-2′(3′H)-one radicals; surfactant-assisted self-assembly process; morphology anisotropy; organic small molecules; emission property; 2D sheet-like microstructures; organic radicals; emission intensity; noncovalent interactions; magnetic property; morphology-dependent magnetic behaviours; microsheet structures; organic radical microstructure fabrication; 2D OPBIPO microsheets; microstructured materials; two-dimensional sheet-like microstructure fabrication; photoluminescence spectra

Subjects: Magnetic anisotropy; Photoluminescence in organic materials; Microstructure; Other methods of preparation of materials; Magnetization curves, hysteresis, Barkhausen and related effects

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http://iet.metastore.ingenta.com/content/journals/10.1049/mnl.2014.0100
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