Anisotropically luminescent hydrogels containing magnetically-aligned MWCNTs-Eu(III) hybrids.

Maggini, Laura; Liu, Mingjie; Ishida, Yasuhiro; Bonifazi, Davide · Adv Mater · 2013

basic_science · Level V

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Abstract

The anisotropic emission properties of an Eu(III)-MWCNTs-based nanocomposite PNIPAAm hydrogel is induced upon application of a 10 T magnetic field, the latter dictating the alignment of the carbon nanotubes. This structuration creates directional highways for light to be preferentially absorbed, giving rise to orientation-dependent light emission intensity. Thermal control of the transparency of the aqueous matrix also allowed a stimulus-induced switching of the materials' emission properties.

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