Janus nanobelts: fabrication, structure and enhanced magnetic–fluorescent bifunctional performance

Abstract

A new nanostructure of magnetic-fluorescent bifunctional Janus nanobelts with Fe3O4/PMMA as one half and Tb(BA)3phen/PMMA as the other half has been successfully fabricated by a specially designed parallel spinneret electrospinning technology. The morphology and properties of the final products were investigated in detail by X-ray diffractometry (XRD), scanning electron microscopy (SEM), energy dispersive spectrometry (EDS), biological microscopy (BM), vibrating sample magnetometry (VSM) and fluorescence spectroscopy. The results revealed that the [Fe3O4/PMMA]//[Tb(BA)3phen/PMMA] magnetic-fluorescent bifunctional Janus nanobelts possess superior magnetic and fluorescent properties due to their special nanostructure. Compared with Fe3O4/Tb(BA)3phen/PMMA composite nanobelts, the magnetic-fluorescent bifunctional Janus nanobelts provided better performance. The new magnetic-fluorescent bifunctional Janus nanobelts have potential applications in novel nano-bio-label materials, drug target delivery materials and future nanodevices due to their excellent magnetic-fluorescent properties, flexibility and insolubility. Moreover, the construction technique for the Janus nanobelts is of universal significance for the fabrication of other multifunctional Janus nanobelts.

Luminescent and Magnetic Properties of Fe3O4@SiO2:phen:Eu3+

“…The use of multifunctional materials will, and in some cases already do, allow savings in number of parts, reducing the need for joining operations 9 . Moreover, materials that present both magnetic and luminescent properties have been developed [10][11][12][13][14] and applied to biotechnological processes such as imaging, tracking, and separation of biological molecules or cells [15][16][17][18][19] . One way to obtain both properties in a single multifunctional material is by using the core-shell strategy, which involves coating Fe 3 O 4 nanoparticles with an actively fluorescent material, resulting in a system with magnetic and luminescent properties 16,[20][21][22] .…”

“…It has been proven that the Fe 3 O 4 will greatly decrease the luminescence of Eu 3+ ion if they are directly blended with them. Therefore, the Eu 3+ should be effectively isolated to avoid direct contact with Fe 3 O 4 if the strong luminescence of the magnetic-fluorescent bifunctional is to be achieved 13 . Thus, Core/shell structure reduces the interaction of the earthrare ion with the magnetic material.…”

Single Flexible Nanofiber to Simultaneously Realize Electricity-Magnetism Bifunctionality

“…[22][23][24] Recently, Ma, et al have prepared Fe 3 O 4 /RE complex magnetic-fluorescent bifunctional composite nanofibers and nanobelts via electrospinning process. [25][26][27][28][29] Wang et al, have prepared PANI particles/rare earth complex/PVP luminescent-electrical bifunctional composite nanofibers via electrospinning process. 30 It is found from the above discussion that multifunctional composite materials have attracted extensive academic researches and become one of the popular subjects of study in materials science.…”

A Novel Scheme to Obtain Y2O2S:Er3+ Upconversion Luminescent Hollow Nanofibers via Precursor Templating

“…To solve this problem, a double-crucible sulfurization method is adopted for succeeding to the morphology of the Y 2 O 3 :RE 3+ hollow nanofibers used as precursors, and it is expected that unbroken Y 2 O 2 S: RE 3+ hollow nanofibers will be obtained. Electrospinning is a simple and effective method to fabricate one-dimensional micro-and nanomaterials, 28 such as nanofibers, 29 nanotubes, 30 ribbon-shaped coaxial nanocables, 31 core-shell-structured coaxial nanofibers, 32,33 Janus nanobelts, 34 Janus nanofibers, 35 and nanobelts. 36,37 …”