Materials Literature
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The present work is a comparative evaluation of physical and biological properties of electrospun biodegradable fibrous scaffolds based on polycaprolactone (PCL) and its blend with polycaprolactone-polyethyleneglycol-polycaprolactone (CEC) with and without nanohydroxyapatite (nHAP) particles. The fiber morphology, por…
The paper reports robust ferromagnetic Cu-doped ZnO micron-scale polycrystalline films via spin-coating using high-quality doped nanocrystals. A reliable magnetic response is observed in the 900 °C vacuum annealed film without any ferromagnetic contribution from other sources. Post-annealing treatment in terms of atmo…
We synthesized uniform crimped microfibers with controlled dimensions using a microfluidic approach, whereby a liquid jet flows from a narrow channel into a wider channel. The liquid jet, sheathed by an immiscible non-reacting liquid, undergoes ultraviolet (UV)-initiated gelation upstream of the channel widening. At t…
7-(Fur-2-yl)benzotriazinyl 1 is the first example of a hydrazyl radical dimer with a thermally accessible triplet state. The triplet exciton (|D| = 0.018 cm(-1), |E| = 0.001 cm(-1)) was observed by solid-state VT-EPR spectroscopy between 5 and 140 K. VT crystallography, DFT calculations and magnetic susceptibility stu…
Single-wall carbon nanotubes (SWNTs) possess superior geometrical, electronic, chemical, thermal, and mechanical properties and are very attractive for applications in electronic devices and circuits. To make this a reality, the nanotube orientation, density, diameter, electronic property, and even chirality should be…
A cyanostilbene-based derivative with aggregation induced-emission was obtained, which exhibited multi-luminescent intensity under external stimuli. The as-prepared crystals of the desired dye showed a rather faint luminescence. Upon heating, its fluorescence could be turned on with the quantum yields of 13.3%. The qu…
Silica nanoparticles are being developed and tested vigorously in drug delivery systems to treat various diseases. There are many advantages of using silica nanoparticles as a nanodelivery system because they are relatively inexpensive to produce, chemically inert, thermally stable and can be tailored to contain porou…
In this study, large-scale multifunctional transparent ITO nanorod films that exhibit extreme wetting states (superhydrophobicity or superhydrophilicity), high transmittance, low resistivity to infer antistatic properties, antifogging, and self-cleaning were fabricated on 2-in. glass wafers and various substrates (gla…
Hydrogen released from ammonia borane in MIL-101(Cr) can be significantly improved by the attached amino and amide groups. The release with minimum impurities starts at 68 °C, reaching 1.6 equivalent of ammonia borane at 85 °C for the amino modified MOFs (NH2-MIL-101).
We report the temperature dependent photoluminescence (PL) properties of monolayer graphene-Au-nanoparticle-ZnO (GAZ) microwire hybrid structures. By comparing with the bare ZnO wire without coverage of graphene, a three times enhancement of PL was found in the GAZ hybrid structures. The enhancement is attributed to t…
This paper reports on the sensing of proteins using water-gated organic field-effect transistors. As a proof-of-concept, streptavidin and avidin were used, with a biotinylated polymer as the active sensing material. The latter is a copolythiophene modified to graft biotin by peptidic coupling. After characterization o…
A superhydrophobic catalyst was prepared by immobilizing Pt nanoparticles on superhydrophobic organic-inorganic hybrid silicas, which showed high activity and selectivity in the oxidation of aliphatic alcohols to carboxylic acids.
Vanadium dioxide is an intriguing candidate for use in intelligent devices such as sensors, magnetic refrigeration and particularly as solar modulating smart window materials. A facile sol–gel route is developed to produce pure VO2 with different nanostructures in a CO2 atmosphere. It was found that the nanoporous str…
The spherulitic growth rates for the lower polylactide (PLA) layer in poly(ε-caprolactone)/polylactide (PCL/PLA), poly(ethylene oxide)/polylactide (PEO/PLA), and poly(ethylene glycol)/polylactide (PEG/PLA) double-layer films during isothermal crystallization at various temperatures above the melting points of PCL, PEO…
Four single-phase isostructural mononuclear complexes (HNEt₃)[DyxYb1-x(bpyda)2]·3H₂O (x = 1 (1), 0 (2), 0.367 (3), 0.135 (4), bpyda = 2,2'-bipyridine-6,6'-dicarboxylate) show characteristics of controllable slow relaxation and photoluminescence. The molecular hybrids 3 and 4 exhibit the Orbach process for the DyIII co…
We determine potentials of the mean force for interactions of amino acids with four common surfaces of ZnO in aqueous solutions. The method involves all-atom molecular dynamics simulations combined with the umbrella sampling technique. The profiled nature of the density of water with the strongly adsorbed first layer…
Cooperative aggregation of monomers into one-dimensional nanostructures typically results in elongated objects. Here we analyse in depth the self-assembly of an N-monoarylated perylene bisimide which shows characteristics of a cooperative growth mechanism but unexpectedly yields objects of small size, due to anti-coop…
Chitin agglomerated scaffolds were produced and functionalized using green chemistry principles and clean technologies. This combination enabled the functionalization of chitin microparticles prepared by dissolution of the polymer in ionic liquids, followed by the application of a sol–gel method. Finally, the 3D const…
The need for human tissues is fundament in certain genetic diseases or accidents of everyday life, they are a primary source for public health. In recent years, to alleviate these effects there was an improvement in the development of tissue engineering, scaffolds or matrices, to support an adequate mechanical and bio…
Mill scale is very attractive industrial waste due to its richness in iron (about = 72% Fe). In this paper, the characterizations of mill scale were studied by different methods of analyses. The produced mill scale briquettes were reduced with hydrogen at varying temperatures, and the reduction kinetics was determined…