2D Dual Anisotropic Conductive Janus Nanostrips Array Pellicle and Derivative 3D Janus‐structural Pipe Concurrently Endowed with Magnetism and Red‐green Two‐colored Fluorescence

Abstract

2D dual anisotropic conductive left-to-right structured special Janus array pellicle (SJAP) synchronously functionalized by red-green two-colored fluorescence and magnetism was constructed by electrospinning. SJAP is assembled by two closely joint films, viz. {[CoFe 2 O 4 /polymethylmethacrylate (PMMA)]@[polyaniline (PANI)/PMMA]}//[Tb (acac) 3 bipy/PMMA] special Janus nanostrip array film as leftside (L-SJAF) and {[CoFe 2 O 4 /PMMA]@[PANI/PMMA]}//[Eu (TTA) 3 (TPPO) 2 /PMMA] special Janus nanostrip array film as right-side (R-SJAF). Microscopically, Janus nanostrip with coaxial//monaxial structure effectively limits three functional substances to their own regions, avoiding adverse impact among conduction, magnetism and fluorescence to achieve enhanced fluorescence and strong anisotropic conduction. Macroscopically, SJAP realizes the division of green and red fluorescence regions, and close binding of L-SJAF and R-SJAF with single anisotropy enables SJAP to obtain dual anisotropic conduction. The high integration of micro and macro portion endues SJAP with dual anisotropic conduction, magnetism and red-green two-colored fluorescence. Two types of 3D Janus-structural pipe were created by curling SJAP, achieving the structural evolution from 1D nanostrip to 2D SJAP then to 3D pipe. The new 3D pipes exhibit identical properties with SJAP. The novel SJAP and 3D pipe have wide prospect in electronic skin. This design theory and technology provide an idea to prepare other polyfunctional materials.

Electrospun light stimulus response-enhanced anisotropic conductive Janus membrane with up/down-conversion luminescence

“…According to the UV-Vis absorbance spectrum of PANI, it can be seen that PANI has an absorption at 270 nm, 365 nm, 520 nm and 615 nm, and thus it can absorb the excitation and emission light of L-ACJM, leading to a reduction in the excitation and emission light intensity. 31,35,36 Therefore, the luminescence intensity of the characteristic peaks of DF and Eu(TTA) 3 (TPPO) 2 of L-ACJM decreased with an increase in the quantity of PANI.…”

“…PMMA, Eu(TTA) 3 (TPPO) 2 , and NaYF 4 :Yb 3+ , Tm 3+ nanoparticles (NPs) were prepared according to the methods reported in references. 30–32…”

“…5b, ESI †), resulting from the pp* transition of the ligands in Eu(TTA) 3 (TPPO) 2 . 30,31 When the EX wavelength was 350 nm, the EM of L-ACJM (Fig. 5d) exhibited obvious EM peaks of Eu(TTA) 3 (TPPO) 2 at 580 nm, 593 nm and 615 nm, and simultaneously the intensity of the characteristic peak of DF at 520 nm was very weak.…”

“…† Synthesis of PMMA, Eu(TTA) 3 (TPPO) 2 , NaYF 4 :Yb 3+ , Tm 3+ nanoparticles PMMA, Eu(TTA) 3 (TPPO) 2 , and NaYF 4 :Yb 3+ , Tm 3+ nanoparticles (NPs) were prepared according to the methods reported in references. [30][31][32]…”

Electrospun dual-aeolotropic conductive exceptive Janus membrane and Janus tubule functionalized by up-/down-converting fluorescence and magnetism

“…However, matching type-II ACF to electronic devices in the market remains a huge challenge, mainly because research on it to date only exists at the laboratory stage. 10,11 Therefore, the design of a novel ACF with polyfunctional properties is a crucial research topic.…”