Materials Literature
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We synthesized a spiropyran–cholesterol conjugate (1) and studied its gelation and photochromic properties. The compound 1, when dissolved in carbon disulfide (CS2), forms a homogeneous gel at −40 °C due to the van der Waals interaction between the cholesterol moieties. UV or visible light irradiation of the CS2 sol o…
In order to clarify the ultra low friction mechanism of Carbon Nitride (CNx) coatings under blowing dry Ar, thickness and area of transfer layers on mating surface were in-situ observed with an optical microscope during sliding against a sapphire hemisphere under blowing dry Ar. During sliding, thickness of transfer l…
The potential of surface self-propagating high-temperature synthesis (SSHS) for obtaining (CuO-CeO 2 )/glass cloth catalysts is demonstrated. The dependence of the structural and catalytic properties of the catalysts on their preparation conditions (nature of the fuel component) is considered. X-ray diffraction, elect…
Ultradisperse cubic silicon carbide (β-SiC) has been obtained by direct plasmadynamic synthesis in pulsed supersonic carbon-silicon plasma jet incident on a copper obstacle in argon atmosphere. The powdered product has a high content of β-SiC in the form of single crystals with average size of about 100 nm and nearly…
High-resolution multilayer plasmonic nanostructures are made in a single fabrication step by nanocutting a gold and parylene C bilayer.. A silicon stamp is used to cut the gold film and vertically displace the nanocut shapes into the polymer. Periodic Au nanopatterns in single and double-layer configurations are fabri…
We describe a convenient route to the alignment of cyclic peptide nanotubes (CPNs). The key lies in the use of nanostructured ionic liquids. An ionic liquid supported membrane with orientated domains is demonstrated, leading to aligned CPNs within a solid membrane.
One-dimensional (1D) ZnO nanostructures have been widely studied because of their electronic and optoelectronic applications. This report discusses the morphology, optical, electrical and sensory properties of polycrystalline ZnO nanofibers (NFs). We observed that the electrospun ceramic NFs interband emission increas…
At the vacuum-ultraviolet (VUV) beam line of a synchrotron, an end station for photoluminescence (PL) coupled to a system to detect absorption is used to investigate the luminescence and absorption of materials. We analyzed a CVD diamond window in wavelength range 160 -250 nm at 300 and 14 K. The PL excited with VUV l…
Directed self‐assembly (DSA) of block copolymer (BCP) holds great promise for many applications in nanolithography, including the next generation magnetic recording. In this work, directed self‐assembly of block copolymer technique has been combined with rotary stage electron beam mastering to fabricate a circular ful…
A novel class of chromophoric polyelectrolytes bearing phosphonium moieties in their backbones has been prepared to incorporate metal-binding 2,2′-bipyridyl (bipy) units. The effect of metal ion binding on the photophysical properties of the polyelectrolyte was probed. By binding metal ions to the polycation, the rela…
The Ceria doped Gadolinium (Gd2O3) nanopowder was synthesized by combustion synthesis by using urea as a fuel. The combustion synthesis method which is reported here is advantageous from the perspectives of small size of the nanoparticle. The structural and photoluminescence (PL) property of sample was studies. Gd2O3:…
DNA stabilized silver nanoclusters (AgNCs) are promising optical materials, whose fluorescence properties can be tuned by the selection of the DNA sequence employed. In this work we have used modified oligonucleotides in the preparation of AgNCs. The fluorescent intensity obtained was 60 times higher than that achieve…
Polyfluorenes with pendant alkoxysilyl groups have been used to prepare inorganic–organic composite nanoparticles (diameter = 80–220 nm) in which the conjugated polymer is dispersed within a silica matrix. Preparation of these nanoparticles is achieved by simultaneous nanoprecipitation of the conjugated polymer and hy…
The transverse acoustic excitation modes were detected by inelastic x-ray scattering in liquid Ga, Cu and Fe in the Q range around 10 nm-1 using a third-generation synchrotron radiation facility, SPring-8, although these liquid metals are mostly described by a simple hard-sphere liquid. Ab initio molecular dynamics si…
In recent years, flexible electronic devices pursued for potential applications. The design and the fabrication of a novel flexible nanoarchitecture by coating electrical conductive MWCNT fiber with ultrathin films of MnO2 to achieve high specific capacitance, for micro‐supercapacitors electrode applications, are demo…
Inspired by the chlorophyll–protein complex in photosynthesis, two types of micelles were formed by the noncovalent complexes between magnesium porphyrins and block copolymers. A series of electrostatic micelles were prepared from magnesium tetrakis(4-sulfonatophenyl) porphyrin (MgTPPS) and poly(ethylene glycol)-block…
BACKGROUND: Malyl-CoA lyase (MCL) is a promiscuous carbon-carbon bond lyase that catalyzes the reversible cleavage of structurally related Coenzyme A (CoA) thioesters. This enzyme plays a crucial, multifunctional role in the 3-hydroxypropionate bi-cycle for autotrophic CO2 fixation in Chloroflexus aurantiacus. A secon…
We have constructed a nanoconjugate composed of positively charged NaYF4:Yb3+,Er3+ upconversion nanoparticles (UCNPs) and negatively charged gold nanoparticles (AuNPs). Fluorescence resonance energy transfer occurs between the UCNPs and the AuNPs. If the AuNPs interact with thiols, this will cause aggregation and lead…
A method of using the superlattice nanowire with epitaxial growth to study the relationship between the crystal orientation and corresponding growth rate for the electrodeposited nanowire is proposed. The relationship between growth rate and orientation of two metals Ni and Cu was studied through analysis of the epita…
Self-organization of gold nanoparticles depends strongly on their organic coating. Lamellar structures were obtained by using double grafting – small Au nanoparticles were covered with n-alkyl thiol molecules and further with monomeric or dimeric type mesogenic molecules. Apart from positional correlations of metallic…