Robust, simple, and scalable touch- brush-spinning methods for the drawing of nanofibers, core–shell their aligned 2D 3D meshes using polymer solutions melts are discussed. As a service to our authors readers, this journal provides supporting information supplied by authors. Such materials peer reviewed may be re-organized online delivery, but not copy-edited or typeset. Technical support issues arising from (other than missing files) should addressed Please note: The publisher is...

Supramolecular nanotubes prepared through macrocycle assembly offer unique properties that stem from their long-range order, structural predictability, and tunable microenvironments. However, assemblies rely on weak non-covalent interactions often have limited aspect ratios poor mechanical integrity, which diminish utility. Here pentagonal imine-linked macrocycles are by condensing a pyridine-containing diamine either terephthalaldehyde or 2,3,5,6-tetrafluoroterephthalaldehyde. Atomic force...

Abstract Resorbable, implantable bioelectronic devices are emerging as powerful tools to reliably monitor critical physiological parameters in real time over extended periods. While degradable magnesium-based electronics have pioneered this effort, relatively short functional lifetimes slowed clinical translation. Barrier films that both flexible and resorbable predictable timelines would enable tunability device lifetime expand the viability of these devices. Herein, we present a library...

In the current study, we examined potential for neural stem cell (NSCs) proliferation on novel aligned touch-spun polycaprolactone (PCL) nanofibers. Electrospun PCL nanofibers with similar diameter and alignment were used as a control. Confocal microscopy images showed that NSCs grew differentiated all over scaffolds up to 8 days. Neurite quantification analysis revealed cultured fibers incorporated bovine serum albumin promoted expression of neuron-specific class III β-tubulin after More...

Biodegradable shape memory elastomers have the potential for use in soft tissue engineering, drug delivery, and device fabrication applications. Unfortunately, few materials are able to meet targeted degradation mechanical properties needed long-term implantable devices. In order overcome these limitations, we designed synthesized a series of unsaturated polyurethanes that elastic, degradable, nontoxic cells vitro. The polymerization included nucleophilic thiol–yne Michael addition between...

A simple and versatile touchspinning method is demonstrated for the fabrication of core-sheath nanofibrous piezoelectric yarns with a single filament electroconductive core. The polyvinylidene fluoride (PVDF) nanofibers are fabricated in continuous spinning process relatively controlled structure, orientation, dimensions to form sheath layer. PVDF nanoyarn assembled into nanogenerator (PNG) capable convert mechanical energy body motion electricity. It was that an electrical potential...

Field-effect transistors (FETs) that incorporate single-walled carbon nanotube (SWNT) networks experience decreased on-off current ratios (I(on)/I(off)) due to the presence of metallic nanotubes. Herein, we describe a method increase I(on)/I(off) without need for either specialized SWNT growth methods or post processing steps remove SWNTs were grown using conventional arc discharge deposited from aqueous suspension. Then, in network decorated with Cu2O nanoparticles acted as controllable...

Abstract This work introduces a gravity fiber drawing (GFD) method of making single filament nanofibers from polymer solutions and precise alignment the fibers in 3D scaffolds. is advantageous for nanofiber contrast to other known methods. GFD provides technology fabrication freestanding well‐controlled diameter, draw ratio, organization with controllable spacing angular orientation between nanofibers. The capable fabricating complex scaffolds combining different diameters, chemical...

<p>Nanotubes assembled from macrocyclic precursors offer a unique combination of low dimensionality, structural rigidity, and distinct interior exterior microenvironments. Usually the weak stacking energies macrocycles limit length or strength resultant nanotubes. Imine-linked were recently found to assemble into high-aspect ratio (>10<sup>3</sup>), lyotropic nanotubes in presence excess acid. Yet these harsh conditions are incompatible with many functional groups...

Reactive spinning of nano- and microfibers that involves very fast chemical reactions ion exchange is a challenge for the common methods nanofiber formation. Herein, we introduce reactive magnetospinning method. This procedure based on magnetic-field-directed collision ferrofluid droplets with liquid contain complementary reactants. The collision, start reaction, fiber drawing are self-synchronized. method used to synthesize, cross-link, chemically modify fiber-forming polymers in stage...

Hybrid molecular brushes (HMBs) are macromolecular constructs made up of a backbone polymer and side-chain polymers with distinct properties. They adapt to changing microenvironment via the conformational mechanism thus may affect mammalian cell proliferation. Two biobenign HMBs were synthesized in this work: (1) polylactide (PLA) grafted chitosan (CHI) form chitosan-graft-polylactide (CHI-g-PLA), two-component brush, (2) poly(N-vinyl pyrrolidone) (PNVP) moieties CHI-g-PLA three-component...

Abstract Nanotubes assembled from macrocyclic precursors offer a unique combination of low dimensionality, structural rigidity, and distinct interior exterior microenvironments. Usually the weak stacking energies macrocycles limit length mechanical strength resultant nanotubes. Imine‐linked were recently found to assemble into high‐aspect ratio (>10 3 ), lyotropic nanotubes in presence excess acid. Yet these harsh conditions are incompatible with many functional groups processing methods,...

Peripheral nerve regeneration across large gaps remains clinically challenging and scaffold design plays a key role in tissue engineering. One strategy to encourage has utilized nanofibers or conduits exploit contact guidance within the neural regenerative milieu. Herein, we report effect of nanofiber topography on two aspects regeneration: Schwann cell migration neurite extension. Substrates possessing distinct diameter distributions (300 ± 40 900 70 nm) highly aligned poly(ε-caprolactone)...

Abstract Reactive spinning of nano‐ and microfibers that involves very fast chemical reactions ion exchange is a challenge for the common methods nanofiber formation. Herein, we introduce reactive magnetospinning method. This procedure based on magnetic‐field‐directed collision ferrofluid droplets with liquid contain complementary reactants. The collision, start reaction, fiber drawing are self‐synchronized. method used to synthesize, cross‐link, chemically modify fiber‐forming polymers in...

Abstract Resorbable, implantable bioelectronic devices are emerging as powerful tools to reliably monitor critical physiological parameters in real time over extended periods. While degradable magnesium-based electronics have pioneered this effort, relatively short functional lifetimes slowed clinical translation. Barrier films that both flexible and resorbable predictable timelines would enable tunability device lifetime expand the viability of these devices. Herein, we present a library...

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Nanotubes assembled from macrocyclic precursors offer a unique combination of low dimensionality, structural rigidity, and distinct interior exterior microenvironments. Usually the weak stacking energies macrocycles limit length or strength resultant nanotubes. Imine-linked were recently found to assemble into high-aspect ratio (>10 3 ), lyotropic nanotubes in presence excess acid. Yet these harsh conditions are incompatible with many functional groups processing methods, lower acid...