Magnetism and white-light-emission bifunctionality simultaneously assembled into flexible Janus nanofiber via electrospinning

Abstract

New-typed magnetic and color-tunable bifunctional Janus nanofibers have been successfully fabricated by electrospinning technology using a specially designed parallel spinneret. The Janus nanofiber consists of two strands of nanofibers assembled side-by-side, one strand nanofiber has tuned magnetism and the other one possesses color-tunable photoluminescence. The Janus nanofibers possess superior magnetic and luminescent properties due to their special nanostructure. Tunable colors from bluish green to orange can be realized in the flexible Janus nanofibers by varying the content of Eu(BA) 3 phen complex, and furthermore, white-lightemitting flexible Janus nanofibers are achieved using rareearth complexes as luminescent centers. In particular, it is the first time to report the influence of Fe 3 O 4 nanoparticles on the fluorescent color of the magnetic-fluorescent nanomaterials. The synthesized products have potential applications in color displays, nano-bio-label materials, and anti-counterfeit materials.

Efficient Synthesis of PVDF/PI Side-by-Side Bicomponent Nanofiber Membrane with Enhanced Mechanical Strength and Good Thermal Stability

“…Composite fibers, such as islands-in-sea, sheath-core, and side-by-side, can be prepared using melt-blown, spunbonded, and electrospinning techniques [5,6,7,8], which are widely used in many fields, such as filtration, catalysis, energy, electronics, bioengineering, and so on [9,10,11,12]. Electrospinning is one of the most effective methods to obtain continuous composite nanofibers, which can efficiently and conveniently fabricate composite nanofibers with different structures [13,14,15,16]. The side-by-side bicomponent composite fiber, with two different polymers orienting parallel in one fiber, can be made by side-by-side electrospinning [17,18].…”

A review on electrospun magnetic nanomaterials: methods, properties and applications

“…Lv et al 87 added polyaniline (PANI) to the magnetic half of the Janus structure and the electrical conductivity 33,67 and (c) Fe 3 O 4 NPs in PVP. 14,[68][69][70] values of the Janus NFs increased with increasing PANI loading. However, the conductivity of the Janus NFs decreased with increasing amounts of Fe 3 O 4 NPs due to the influence of Fe 3 O 4 on the polymerisation process of aniline.…”

“…Common examples of pre-treatment include sol-gel treatment of the polymer solution and dispersive pre-treatment of composite nanoparticles, such as ultrasonic dispersion [10][11][12][13] or coating with oleic acid (or grafting with a coupling agent) to prevent undesirable aggregation. [14][15][16][17] 2.1.2 Electrospinning rigs. Fig.…”

“…Additionally, polymers can guide the assembly of Fe 3 O 4 NPs to form novel structures. 14,33,[63][64][65][66][67][68][69][70] Since polymeric materials can encapsulate and bind the nanoparticles as a matrix, research groups mix polymer materials with Fe 3 O 4 NPs by uniaxial electrospinning, coaxial electrospinning and parallel-plate electrospinning. The method of electrospinning used affects the structure and properties of the composite material.…”

A facile synthesis of 1,3,6,8-pyrenesulfonic acid tetrasodium salt as a hydrosoluble fluorescent ink for anti-counterfeiting applications

“…Due to their eco-friendliness, they have aroused wide attention. Traditional water-based anti-fake materials consist of rare-earth (Er, Tb, Y et al) [2][3][4] or other nanophase materials (Au, Ag, CQDs et al), [5][6][7][8] which not only involve harsh conditions during the preparation process but are vulnerable to duplication.…”