Materials Literature
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We report near-infrared to ultraviolet (UV) upconversion emissions in triply-doped Gd 3+ –Tm 3+ –Yb 3+ fluoride–phosphate glasses. Emission at 310 nm, originated from the Gd 3+: 6 P 7/2 → 8 S 7/2 transition, was observed for the first time in glasses. The high-purity glasses prepared exhibit extended transparency in t…
Abstract In materials where two or more ordering degrees of freedom are closely matched in their free energies, coupling between them, or multiferroic behavior can occur. These phenomena can produce a very rich phase behavior, as well as emergent phases that offer useful properties and opportunities to reveal novel ph…
Here, we have exploited the heightened extracellular concentration of matrix metalloproteinase-9 (MMP-9) to induce surface-conversional properties of nanogels with the aim of tumor-specific enhanced cellular uptake. A modular polymeric nanogel platform was designed and synthesized for facile formulation and validation…
In this study, the structure-activity relationship of amphiphilic block copolymer micelles as nanosized drug delivery system was revealed. Firstly, a biodegradable triblock polymers PEG-DiHyd-PLA containing hydrazone bond was synthesized through the ring-opening polymerization. In this method, PEG-DiHyd-Phenol was use…
Chromatic aberrations are a primary limiting factor in thin, high-quality imaging systems. Recent advances in nanoscale manufacturing, however, have enabled the creation of metasurfaces: ultra-thin optical components with sub-wavelength features that can locally manipulate the wavefront phase. Meanwhile, there has bee…
Abstract Here, we report a novel magnetic resonance imaging (MRI)/fluorescence bimodal amplification platform for the detection of glutathione (GSH) on the basis of redoxable manganese dioxide (MnO 2 ) nanosheets, which can be readily applied as a DNA nanocarrier, fluorescence quencher, and intracellular GSH-activated…
The thermal and mechanical properties of two types of polyester nanofiber, poly (1,4-cyclohexanedimethylene isosorbide terephthalate) (PICT) copolymers and the terpolyester of isosorbide, ethylene glycol, 1,4-cyclohexane dimethanol, and terephthalic acid (PEICT), were investigated. This is the first attempt to fabrica…
Abstract Characterization of soil corrosivity in archaeological sites is an important subject to understand the conservation conditions of archaeological bronze collections and helps conservators to prepare a conservation strategy for long term preservation of bronze objects. In this paper, a research approach is esta…
Although nanotechnology has led to important advances in in vitro diagnostics, the development of nanosensors for in vivo detection remains very challenging. Here, we demonstrated the proof-of-principle of in vivo detection of nucleic acid targets using a promising type of surface-enhanced Raman scattering (SERS) nano…
A series of symmetric poly(solketal methacrylate- b -styrene) (PSM- b -PS) copolymers with varying molecular weights that can transform a hydrophobic PSM block to a hydrophilic poly(glycerol monomethacrylate) (PGM) block through an acid hydrolysis were investigated. This simple chemical transformation significantly en…
Migration of fibroblasts into wound area is a critical phenomenon in wound healing process. We used an appropriate system to fabricate an electrospun bioactive scaffold with controlled release of PDGF-BB in order to induce migration of primary skin fibroblast cells. First of all, protein-loaded chitosan nanoparticles…
Liquid marbles (LMs) have recently attracted interest for use as cargo carriers in digital microfluidics and have successfully been implemented as signal carriers in collision-based unconventional computing circuits. Both application domains require LMs to roll over substantial distances and to survive a certain numbe…
In this paper, we have investigated a resistive ammonia (NH3) gas sensor fabricated with a combination of polyaniline (PANI) as a conductive polymer and different weight percentages of nitrogen-doped graphene quantum dots (N-GQDs). We used two different metals of silver (Ag) and aluminium (Al) as electrodes to the sen…
The surface and electrokinetic properties of chitosan–TiO 2 biomaterial have been investigated. Both carbohydrate polymer and titanium dioxide demonstrate unique physicochemical properties appropriate for biotechnological applications. However, the changing stability of such systems restricts its usage. Improved stabi…
Abstract In this study, novel porous three‐dimensional (3D) scaffolds from silk fibroin (SF) and functionalized (amidated and oxidized) citrus pectin (PEC) were developed for skin tissue engineering applications. Crosslinking was achieved by Schiff's reaction in borax presence as crosslinking coordinating agent and Ca…
We report extraordinary Hall effect and room-temperature ferromagnetism in undoped Q-carbon, which is formed by nanosecond pulsed laser melting and subsequent quenching process. Through detailed structure–property correlations in Q-carbon thin films, we show the excess amount of unpaired electrons near the Fermi energ…
Conjugated donor–acceptor copolymers based on naphthalene diimide (NDI) as acceptor and thiophene-terminated oligophenylenevinylene as donor moieties (P 1 and P 2, respectively) were synthesized using the direct (hetero) arylation (DHAP) polymerization route. Nitrile groups were introduced at the vinylene linkage in o…
Abstract Selective catalytic reduction (SCR) is now an established NO x removal technology for industrial flue gas as well as for diesel engine exhaust gas. However, it is still a big challenge to develop a novel low-temperature catalyst for NH 3 -SCR of NO x , especially at a temperature below 200°C. In the past few…
The tetranuclear cobalt cluster compound [Co 4 (μ-NP t Bu 3 ) 4 ][B(C 6 F 5 ) 4 ] ( t Bu = tert -butyl) was synthesized by chemical oxidation of Co 4 (NP t Bu 3 ) 4 with [FeCp 2 ][B(C 6 F 5 ) 4 ] and magnetically characterized to study the effect of electronic communication between low-coordinate metal centers on slow…
Glasses and gels are the two dynamically arrested, disordered states of matter. Despite their importance, their similarities and differences remain elusive, especially at high density, where until now it has been impossible to distinguish them. We identify dynamical and structural signatures which distinguish the gel…