Construction Of Luminescence-Electricity-Magnetism Multifunctional Flexible Janus Nanoribbon

Recently, study on multifunctional materials has attracted much attention of scientists. Especially, investigation on the multifunctional materials with luminescence-electricity-magnectism multifunctionality has become one of the hot subjects in the field of materials science. Compared to the single functional nanomaterials, multifunctional nanomaterials with special structures have more wide applications. Electrospinning has been proved to be one of the best methods to fabricate one-dimensional nanomaterials owing to its simple operation, strong controllability and reproducibility.In this dissertation, [Eu(BA)3phen+Tb(BA)3phen]/PMMA composite nanobelts were via electrospinning, luminescent-electrical-magnetic trifunctional {[Eu(BA)3phen+Tb(BA)3phen]/PMMA}//[PANI/Fe3O4/PMMA] Janus nanoribbons,{[Dy(BA)3phen+Eu(BA)3phen]/PMMA}//[PANI/Fe3O4/PMMA] Janus nanoribbons and their arrays were fabricated by using the electrospinning with a specially designed parallel spinneret. The as-prepared samples were systematically characterized by various measurement techniques. The results reveal that the fluorescence color of [Eu(BA)3phen+Tb(BA)3phen]/PMMA composite nanobelts could be tuned by adjusting the mass ratios of Eu(BA)3phen complexes to Tb(BA)3phen complexes in a wide color range of red-yellow-green under the excitation of 290-nm single-wavelength ultraviolet light. Moreover, the fluorescence color of the products can be also tuned by varying the excitation wavelengths. {[Eu(BA)3phen+Tb(BA)3phen]/PMMA}//[PANI/Fe3O4/PMMA] Janus nanoribbons, {[Dy(BA)3phen+Eu(BA)3phen]/PMMA}//[PANI/Fe3O4/PMMA] Janus nanoribbons and their arrays possess excellent and tunable luminescence, electrical conduction and magnetic properties owing to the special Janus nanostructure. The emitting color, electrical conductivity and magnetic property of Janus nanoribbons and arrays can be tuned by adjusting the different amounts of Eu(BA)3phen, Tb(BA)3phen, Dy(BA)3phen, PANI or Fe3O4 NPs. The new trifunctional Janus nanoribbons and their arrays have potential applications in many fields, such as full-color display, electromagnetic shielding, molecular electronics, microwave absorption and nanodevices.