Materials Literature
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Abstract Temperature‐responsive carbon nanotube (CNT)/poly( N ‐isopropylacrylamide) (PNIPAM) hybrid brush films were prepared by combining the layer‐by‐layer and surface‐initiated polymerization (LbL‐SIP) techniques. Atom transfer radical polymerization (ATRP) is employed for the preparation of PNIPAM polymer brushes.…
Aqueous dispersions of partially deacetylated α-chitin (PDACh) were prepared using various organic and inorganic acids in water under various pH and ionic strength conditions. The degree of PDACh nanofibrillation in the dispersions was investigated by measuring their light transmittances, nanofibrillation yields, and…
Polymers have become common materials of our everyday lives due to their superior properties. However, polymer applications also contribute to the growing amounts of solid waste generated, as polymer products are often used only once before disposal. The disposal problem is not simply technical, but it also has social…
Abstract Background Functionalization of aliphatic biopolymers such as bacterial polyhydroxyalkanoates ( PHA ) using biologically active hydrophilic moieties like sugars helps to improve the hydrophilicity and biodegradability of the biomaterial . Results The effects of reaction variables reaction time, temperature, e…
Abstract Pyrochlore‐structured yttrium titanate phosphors activated by trivalent europium ions (Y 2 Ti 2 O 7 (YT):Eu 3+ ), with spherical morphology, were synthesized at different pH values by a solvothermal process. From the structural and morphological measurements, the annealing temperature had no effect on the sph…
It is shown that the sign of the product of three Zeeman splitting factors corresponding to the main magnetic axes defines the sign of the Berry phase of a (pseudo) spin in an applied magnetic field. Ab initio calculations show that g(X)g(Y)g(Z)< 0 is often the case for lanthanide and transition metal complexes, while…
The high negative bias of a sample in a scanning electron microscope constitutes the “cathode lens” with a strong electric field just above the sample surface. This mode offers a convenient tool for controlling the landing energy of electrons down to units or even fractions of electronvolts with only slight readjustme…
The solubility of ceftazidime in pure water and in aqueous electrolyte solution with different pH values was measured by using the laser monitoring method in the temperature range of 278.15 K to 298.15 K. The modified Apelblat equation was adopted to investigate the dependency of the solubility on temperature. The dis…
Fundamentals Strategic Directions, Peter C. Johnson Silks, Monica A. Serban and David L. Kaplan Calcium Phosphates, Kemal Sariibrahimoglu, Joop G.C. Wolke, Sander C.G. Leeuwenburgh, and John A. Jansen Engineered Protein Biomaterials, Andreina Parisi-Amon and Sarah C. Heilshorn Synthetic Biomaterials, Joshua S. Katz an…
Inspite of demanding research that has been undertaken for cancer treatment, cancer is a major cause of mortality. Available conventional treatment options of solid tumor are associated with serious side effects. Nanomedicines mediated fascinating approach may be effectively utilized for efficient tumor targeting by a…
Slow relaxation: Exergonic high-spin→low-spin relaxation after photoexcitation has been found to be exceedingly slow in a class of iron(II) complexes with hexadentate imine ligands. The thermal activation barriers that arise between the quintet- and singlet-spin manifolds are the highest ever recorded for spin crossov…
A series of chiral block copolymers (BCPs*), poly(4-vinylpyridine)- block -poly( l -lactide) (P4VP–PLLA), are synthesized through atom transfer radical polymerization and living ring-opening polymerization. Except for typical microphase-separated phases, such as lamellae (L) and hexagonally packed cylinders (HC), a he…
Polyethylene glycol (PEG)-based semi-IPNs have been widely used as hydrogel matrices in tissue engineering applications because of their inherent hydrophilicity and biocompatibility. Today, synthetic scaffolds are being widely used in tissue engineering and allied applications because they offer the ability to precise…
An approach to fabricate large-scale graphene nanoribbons (GNRs) with tunable ribbon widths is presented. Regular steps with variable heights from 1 to 100 nm can be prepared on a SiC substrate by a low-pressure etching process. Graphene can be epitaxially grown only on the side walls of the steps, thereby leading to…
Abstract In‐reactor blends of ultra‐high molecular weight polyethylene (UHMW‐PE) and high‐density medium molecular weight polyethylene (mMW‐PE) were prepared by precise multi‐stage slurry polymerizations. Correlations between polymerization conditions and polymer properties of the reactor powders were investigated by…
The patterning of graphene has gained a great deal of attention for practical applications such as electrical devices and sensors. Here we introduce a facile, versatile, and direct patterning method for the fabrication of electrically conductive graphene patterns on a flexible plastic substrate based on the laser tran…
An amphiphilic amino resorcinarene (T) was modified onto the surface of graphene oxide (GO) through covalent bond forces and non-covalent bond forces to prepare GO–T. The water-soluble graphene–T (GN–T) composite was prepared by the reduction of GO–T. Then, pre-prepared platinum nanoparticles (PtNPs) and different siz…
For the first time, well-dispersed submicrometer-sized YVO(4):Eu(3+) hollow spheres were successfully synthesized though a surfactant-free method by employing Y(OH)CO(3):Eu(3+) colloidal spheres as a sacrificial template and NH(4)VO(3) as a vanadium source. The synthetic process mainly consists of two steps, i.e., hyd…
The application of nanotechnology and nanoscience for medical purposes is anticipated to make significant contributions to enhance human health in the coming decades. However, the possible future mass production and use of these medical innovations exhibiting novel and multifunctional properties will very likely lead…
Gleich und entgegengesetzt: Chirale Tensidmoleküle bewirken die Bildung chiraler Nanokristalle aus der achiralen Phase von Quecksilbersulfid, indem vermutlich die Thiolatgruppen an die Hg-Ionen des wachsenden Kristalls binden. Die Erzeugung chiraler anorganischer Nanokristalle von gewünschter Größe und Form ist für vi…