The development of pressure sensors is crucial for the implementation electronic skins and health monitoring integrated into novel wearable devices. Tremendous effort devoted toward improving their sensitivity, e.g., by employing microstructured electrodes or active materials through cumbersome processes. Here, a radically new type piezoresistive sensor based on millefeuille-like architecture reduced graphene oxide (rGO) intercalated covalently tethered molecular pillars holding on-demand...

In this article, we report evidence of β-cyclodextrin (β-CD) self-aggregation in water. A critical aggregation concentration (cac) between 2 and 3 mM was determined by using dynamic (DLS) static (SLS) light scattering to investigate the presence aggregates. Transmission electron microscopy at cryogenic temperature (Cryo-TEM) used detect structural features cyclodextrin self-aggregates. The results show occurrence polymorphism depending on β-CD concentration: polydisperse nearly spherical...

The works of art and artifacts that constitute our cultural heritage are subject to deterioration, both from internal external factors. Surfaces interact with the environment most prone aging decay; accordingly, soiling is a prime factor in degradation surfaces attendant disfigurement piece. Coatings were originally intended protect or contribute aesthetically an artwork should be removed if they begin have destructive impact on its appearance surface chemistry. Since mid-19th century,...

We study the formation of four supramolecular bicomponent networks based on linear modules (linkers) bridging melamine via triple hydrogen-bonds. explore at nanoscale level phenomena polymorphism and phase segregation which rule generation highly crystalline nanoporous patterns self-assembled solid−liquid interface. The investigated linkers include two systems exposing diuracil groups in α ω position, naphthalene tetracarboxylic diimide pyromellitic diimide. In situ scanning tunneling...

The brewery industry annually produces huge amounts of byproducts that represent an underutilized, yet valuable, source biobased compounds. In this contribution, the two major beer wastes, is, spent grains and yeasts, have been transformed into carbon dots (CDs) by a simple, scalable, ecofriendly hydrothermal approach. prepared CDs characterized from chemical, morphological, optical points view, highlighting high level N-doping, because chemical composition starting material rich in...

Gelatin-based hydrogels are exploited in a variety of fields, including food, pharmaceuticals, medical, and cosmetics, due to their biocompatibility, versatility, availability. Gelatin's use is, although, hampered by its poor thermal stability at physiological temperature, cross-linking treatment is often necessary improve against dissolution. Glutaraldehyde the most used agent, but biomedical field has raised some toxicity issues. Glyceraldehyde was proposed as more biocompatible...

Abstract Materials combining stretchability and sensitivity to external stimuli are key for wearable electronics applications enable the emergence of disruptive technologies in biosensing, health monitoring, photodetection human motion recognition. Conductive organohydrogels have gained significant attention due their high cost‐effective preparation. Biopolymers like gelatin alginate offer unique opportunities developing responsive devices, owing biocompatibility toward environmental...

Silver−poly(acrylate) clusters have been synthesized in water by reduction of AgNO3 the presence poly(acrylates) different molecular weights through two methods, NaBH4 and UV exposure. The structure effect synthesis parameters on size polydispersity particles were evaluated means small-angle X-ray scattering (SAXS) confirmed UV−visible absorption transmission electron microscopy (TEM). results clearly show that method polymer chain length play key roles achievement few-nanometer-sized...

In this work we have studied the effect of a low-frequency alternating magnetic field (LF-AMF) on permeability magnetoliposomes, i.e. liposomes including nanoparticles within their water pool. Large unilamellar loaded with cobalt ferrite (CoFe2O4) been prepared and characterized. Structural characterization liposomal dispersion has performed by dynamic light scattering (DLS). The enhancement liposome upon exposure to LF-AMF measured as self-quenching decrease fluorescent hydrophilic molecule...

The paper describes the effect of a low-frequency alternating magnetic field (LF-AMF) on permeability and release properties large (LUVs) giant (GUVs) unilamellar vesicles loaded with citrate coated cobalt ferrite nanoparticles (NPs). shell allows high loading NPs in lipid without modifying their properties. increase LUVs upon exposure to LF-AMF has been evaluated as fluorescence self-quenching carboxyfluorescein (CF) entrapped inside liposome aqueous pool. Liposome leakage monitored...

This letter reports the synthesis and characterization of functionalized magnetic nanoparticles associated with chemical gels their application to conservation cultural heritage. Magnetic nanoparticles, which are acrylamide ethylene oxide polymers, produce a sponge that can be loaded oil-in-water microemulsions, forming magnetically responsive gel-like system acting as permanent hydrogel. The used for specific applications in detergents or release material. manipulated cleaned from materials...

In this paper, we report for the first time a microstructural characterization of pyrolysis oils obtained from biomass. Bio crude (BCOs) are good candidates as substitutes mineral fuels. By using small-angle neutron scattering (SANS), show that BCOs nanostructured fluids constituted by complex continuous phase and nanoparticles mainly formed association units pyrolytic lignins. The aggregation these during produces branched structures with fractal dimension Df between 1.4 1.5, which...

The ability to control cell alignment represents a fundamental requirement toward the production of tissue in vitro but also create biohybrid materials presenting functional properties human organs. However, cultures on standard commercial supports do not provide selective organization morphology, and different techniques, such as use patterned or stimulated substrates, are developed induce cellular alignment. In this work, new approach muscular morphogenesis is presented exploiting liquid...

Functional materials obtained through green and sustainable routes are attracting particular attention due to the need reduce environmental impact of chemical industry. In this work we propose a bioinspired approach for preparation alginate fibers containing silver nanoparticles (AgNPs), be used antimicrobial purposes. We demonstrate that filiform polymeric structures with length few meters can easily by extruding an solution in aqueous Ag+-containing bath (i.e. wet spinning) treating...

Abstract The use of materials from renewable sources instead fossil fuels is a crucial step forward in the industrial transition toward sustainability. Among polysaccharides, alginate stands out as versatile and eco‐friendly candidate due to its ability form functional complexes with cations. This review provides an up‐to‐date comprehensive description complexation specific cations, focusing on how interaction forces can be harnessed tailor physicochemical properties cation‐alginate‐based...

The control over the formation of a bicomponent porous network was attained by self-assembly at solid–liquid interface, exploiting triple H-bonds between melamine and bis-uracyl modules.

Conservation of works art often involves the inappropriate application synthetic polymers. We have proposed use alternative methodologies for conservation and formulated innovative cleaning nanostructured systems to remove previously applied polymer films grime from painted surfaces. In particular, a novel "micellar system" composed water, SDS, 1-pentanol, ethyl acetate propylene carbonate was recently successfully used acrylic vinyl/acrylic copolymers Mesoamerican wall paintings in...

The thermodynamics and kinetics of formation host-guest complexes between a series bolaform surfactants type C n Me 6 (2+)2Br (-) ( = 8, 10, 12) alpha-cyclodextrin beta-cyclodextrin were studied with the aid isothermal titration calorimetry (ITC) at 298.15 308.20 K. association constant, enthalpy, entropy determined. obtained thermodynamic parameters are compared for micelle related cationic surfactant. difference in magnitude sign alpha-CD beta-CD is discussed based on curvature cavity CD....