Single and repeated dose toxicity of citric acid-based carbon dots and a derivative in mice
Single and repeated dose toxicity experiments demonstrated citric acid-based carbon dots and a derivative had low toxicity in mice.
Materials Literature
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Facile and efficient exfoliation of inorganic layered materials using liquid alkali metal alloys
A facile and efficient exfoliation process has been reported to produce single- and few-layer nanosheets of MoS2, WS2 and BN using liquid alloys of alkali metals at room temperature. The colloidal dispersions of MoS2 and WS2 layers were highly stable over several months, which allowed us to easily prepare films of MoS…
Vertically and compactly rolled-up reduced graphene oxide film/epoxy composites: a two-stage reduction method for graphene-based thermal interfacial materials
Schematic of the fabrication procedure of thermal-reduced vertically aligned reduced graphene oxide (TR-VArGO)/epoxy composite. This efficient and simple method includes two reduction stages to fabricate a thermal-reduced VArGO (TR-VArGO)/epoxy composite.
Covalent functionalization of graphene with polythiophene through a Suzuki coupling reaction
A promising graphene-based material covalently modified with polythiophene by a C–C bond was synthesized by a Suzuki coupling reaction and characterized by various techniques.
Strong emission of 2,4,6-triphenylpyridine-functionalized polytyrosine and hydrogen-bonding interactions with poly(4-vinylpyridine)
The emission intensity of Pyridine-PTyr decreased after blending with P4VP and underwent a hypsochromic shift from 536 to 489 nm due to the release of the restricted intramolecular rotation of the triphenyl pyridine unit in the center of the polymer.
Graphene oxide-assisted preparation of poly(vinyl alcohol)/carbon nanotube/reduced graphene oxide nanofibers with high carbon content by electrospinning technology
Electrospun PVA/RGO/MWCNT nanofibers with high carbon content prepared via a well-dispersed MWCNT/PVA solution with a assistance of GO have a relatively high electrical conductivity.
Variation of redox activity and synergistic effect for improving the preferential oxidation of CO in H 2 -rich gases in porous Pt/CeO 2 –Co 3 O 4 catalysts
The porous Pt/CeO 2 –Co 3 O 4 catalysts show superior catalytic performance for CO preferential oxidation in H 2 -rich gases.
Singlet–triplet annihilation in single LHCII complexes
In light harvesting complex II (LHCII) of higher plants and green algae, carotenoids (Cars) have an important function to quench chlorophyll (Chl) triplet states and therefore avoid the production of harmful singlet oxygen. The resulting Car triplet states lead to a non-linear self-quenching mechanism called singlet-t…
Group 1 and group 2 metal complexes supported by a bidentate bulky iminopyrrolyl ligand: synthesis, structural diversity, and ε-caprolactone polymerization study
We report here a series of alkali and alkaline earth metal complexes, each with a bulky iminopyrrolyl ligand [2-(Ph3CN=CH)C4H3NH] (1-H) moiety in their coordination sphere, synthesized using either alkane elimination or silylamine elimination methods or the salt metathesis route. The lithium salt of molecular composit…
Structure–barrier property relationship of biodegradable poly(butylene succinate) and poly[(butylene succinate)-co-(butylene adipate)] nanocomposites: influence of the rigid amorphous fraction
Composites composed of polyesters, poly(butylene succinate) (PBS) or poly[(butylene succinate)-co-(butylene adipate)] (PBSA), and 5 wt% of montmorillonite (CNa) or organo-modified montmorillonite (C30B) were melt-processed and transformed into films by either compression-molding or extrusion-calendering. XRD, rheologi…
Ultrathin γ-Al 2 O 3 nanofibers with large specific surface area and their enhanced thermal stability by Si-doping
Ultrathin boehmite nanofibers were synthesized via a parallel flow co-precipitation method and then transformed into γ-Al 2 O 3 nanofibers by calcination.
Catalytically engineered reduced graphene oxide/ZnO hybrid nanocomposites for the adsorption, photoactivity and selective oil pick-up from aqueous media
Microwave mediated in situ growth of nanocrystalline ZnO on rGO nanosheets is achieved using APTMS as the crosslinking agent. The deposition of hydrophobic ZnO/Si@rGO on a simple cotton textile results in the selective adsorption of oil from aqueous media.
Development of rare-earth-free phosphors for eco-energy lighting based LEDs
Several phosphors without rare-earth elements were synthesized by a simple and practical method.
Experimental Investigation of the Properties of Electrospun Nanofibers for Potential Medical Application
Polymer based nanofibers using ethylene‐co‐vinyl alcohol (EVOH) were fabricated by electrospinning technology. The nanofibers were studied for potential use as dressing materials for skin wounds treatment. Properties closely related to the clinical requirements for wound dressing were investigated, including the fluid…
Porous PCL/Chitosan and nHA/PCL/Chitosan scaffolds for tissue engineering applications: fabrication and evaluation
Two semicrystalline polymers were blended to fabricate porous scaffolds for tissue engineering applications. Scaffolds containing polycaprolactone (PCL)/chitosan and nanohydroxyapatite (nHA) incorporated nHA/PCL/chitosan were produced using the freeze-drying technique. A model drug, tetracycline hydrochloride (tetracy…
Biocomposite of Cassava Starch Reinforced with Cellulose Pulp Fibers Modified with Deposition of Silica (SiO 2 ) Nanoparticles
Eucalyptus pulp cellulose fibers were modified by the sol‐gel process for SiO 2 superficial deposition and used as reinforcement of thermoplastic starch (TPS). Cassava starch, glycerol, and water were added at the proportion of 60/26/14, respectively. For composites, 5% and 10% (by weight) of modified and unmodified p…
Dynamics of suspensions of hydrodynamically structured particles: analytic theory and applications to experiments
We present an easy-to-use analytic toolbox for the calculation of short-time transport properties of concentrated suspensions of spherical colloidal particles with internal hydrodynamic structure, and direct interactions described by a hard-core or soft Hertz pair potential. The considered dynamic properties include s…
Preparation and Characterization of Transparent Conductive SnO2-F Thin Film Deposited by Spray Pyrolysis: Relationship between Loading Level and Some Physical Properties
Relationship between loading level and some physical properties of the SnO2-F film has been investigated. SnO2-F thin films were prepared by spray pyrolysis technique using modified respiratory therapist nebulizer at substrate temperature in the range of 400-520̊C. A stannous chloride solution was used as precursor an…
Lanthanide-based Single Molecule Magnets
Single-molecular magnets (SMMs) that display magnetic bistability and slow relaxation process have unique potential in ultrahigh-density memory components and spintronic devices. Lanthanide-based SMMs (Ln-SMMs) have sparked increasing interest recently due to the large magnetic moments and large magnetic anisotropy. A…
Analysis of optoelectronic properties and development of new persistent phosphor in Ce3+-doped garnet ceramics
Ce3+-doped garnet materials have attracted a great deal of attention in w-LEDs and scintillators applications because of their various optical properties. In 2011, we reported intense photocurrent by blue light excitation in Y3Al5−xGaxO12 (Yttrium Aluminum Gallium Garnet, YAGG):Ce3+ phosphors with high Ga content. Wit…