Materials Literature
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Based on first principle calculations, a graphene monolayer shows a complicated deformation behavior under uniaxial tension. The maximum stress of graphene is reached when the bond stretching ratio is far less than its breaking value, which means that graphene shows the typical "ductile-like" behavior but not the conv…
AIM: Layered double hydroxide nanoparticles (LDH NPs) are promising for stem cell research and applications. In this study, we investigated the size-dependent interactions of LDH NPs with mouse embryonic stem cells (mESCs). MATERIALS & METHODS: LDH NPs with diameters of 100 and 50 nm were synthesized and characterized…
13-atom platinum nanoclusters have been synthesized quantitatively in the pores of the zeolites NaY and KL. They reveal highly interesting magnetic properties like high-spin states, a blocking temperature, and super-diamagnetism, depending heavily on the loading of chemisorbed hydrogen. Additionally, EPR active states…
As is well established, mastery to precise control of the layer number, stacking order of graphene, and the size of single-crystal monolayer graphene is very important for both fundamental interest and practical applications. In this report, millimeter-sized single-crystal monolayer graphene has been synthesized to mu…
We designed and synthesized new kinds of near-infrared catechol-based multidentate polymers which were intended to yield compact NIR-active iron oxide nanoparticles with excellent stability and biocompatibility. The resulted multifunctional nanoprobes showed great potential as multimodal contrast agents for NIRF/PA/MR…
Crude glycerol (CG), a by‐product from biodiesel production, is a carbon source with potential as feedstock for polyhydroxyalkanoate (PHA) production. PHAs are biological macromolecules synthesized by microorganisms as intracellular carbon and energy storage granules. PHA production and its properties were investigate…
The growing interest in environmental issues and increasing demands to develop materials that do not burden the natural environment significantly are currently observed. In this connection many studies on polymer degradation in different environments are carried out. It is important to consider the influence of synerg…
Combinatorial AACVD has achieved the production of various niobium/nitrogen co-doped TiO 2 materials in a single film. The co-doping concentrations have been correlated with functional properties.
The protocols used give a range of behaviours comparable to previous experiments and an insight into the structure of ACC.
The crystallization of weakly fluorescent 4-amino-2,2′-bipyridine ( AMBPY ) in solution phase under ambient conditions afforded three conformational polymorphs possessing enhanced emission.
Abstract Aufgrund der hohen Verfügbarkeit in der Erdkruste und seiner geringen Toxizität im Vergleich zu einigen anderen Halbleitern ist Silicium der Vorreiter in der Elektroindustrie. Daher finden Silicium‐Nanokristalle (SiNKs) insbesondere aufgrund ihrer einzigartigen optoelektronischen Eigenschaften ein hohes Inter…
Detailed experimental and theoretical studies of the temperature dependence of the effect of different scattering mechanisms on electrical transport properties of graphene devices are presented. We find that for high mobility devices the transport properties are mainly governed by completely screened short range impur…
Abstract Thermoelectric performances are usually enhanced by minimizing the thermal conductivity of materials, either by introducing superlattice structures or nanostructuring. Here, a new approach to performance enhancement, based on Seebeck coefficient improvement, is presented for Ge2Sb2Te5 thin films. The electron…
Triple-doped (Yb(3+)/Er(3+)/Tm(3+)) KMnF3 nanocubes with uniform sizes of 250 nm were synthesized by a facile hydrothermal route using the oleic acid as the capping agent. It was found that these nanocubes can simultaneously exhibited four-color (blue, green, red and NIR) upconversion emissions under a single 980 nm n…
Controlled surface modification of nanocarbons is crucial for their use in applications. The paper deals with the functionalization of carbon nanotubes (CNTs) with HNO 3 vapors. Sub‐azeotropic HNO 3 + H 2 O + Mg(NO 3 ) 2 solution is used for the generation of nitric acid vapors. Because this approach allows tuning the…
Two pyrene based organogelators in which the pyrene moiety has been linked to the diphenylalanine dipeptide have been synthesized. We show how the solvent can tune both the morphology and the optical properties of the organogels: spherical aggregates with quenched emission were obtained in acetonitrile, whereas an ent…
Riboflavin kinases (RFKs) catalyse the phosphorylation of riboflavin to produce FMN. In most bacteria this activity is catalysed by the C-terminal module of a bifunctional enzyme, FAD synthetase (FADS), which also catalyses the transformation of FMN into FAD through its N-terminal FMN adenylyltransferase (FMNAT) modul…
Drug delivery across mucus membranes is a particularly effective route of administration due to the large surface area. However, the unique environment present at the mucosa necessitates altered drug formulations designed to (1) deliver sensitive biologic molecules, (2) promote intimate contact between the mucosa and…
This work is devoted to investigate the available agricultural Tunisian waste: the date pits as reinforcing filler for thermoplastic matrix. The chemical composition of this reinforcing filler is found to be comparable to nonwood plants: its content comprises of 13% of extractibles, 22% of lignin, and 61% of holocellu…
Abstract Polycyclic, highly-conjugated, and ortho-fused aromatic compound, 9-tetraethyleneglycoxy-11-oxa[9]helicene (TO9H), was synthesized and used to explore the feasibility of fabricating thin films and the photoelectrochemical properties of resultant films. Since TO9H has both the hydrophobic helicene part and the…