Materials Literature
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Two cyanide-bridged molecular cubes of general formula [{MCl}4{ReII(triphos)(CN)3}4], M=Fe, Co (depicted), triphos=1,1,1-tris(diphenylphosphanylmethyl)ethane, and their magnetic properties are reported. The cubes are prepared in good yields from the reaction of the ReII complex [Et4N][ReII(triphos)(CN)3] with the appr…
Electrogenerated chemiluminescence (ECL) was used to image the spatial variations in electrochemical activity at the heavily doped polycrystalline diamond surface. ECL was generated by the reaction of [Ru(bpy) 3 ] 2+ and tripropylamine. Images of the chemiluminescence patterns at the polycrystalline diamond surface we…
The dielectric environment surrounding poly(N-isopropylacrylamide) in aqueous solution was investigated by probing with spirobenzopyran covalently attached as a side chain to the polymer main chain. Inherent characteristics of the spirobenzopyran chromophore were analyzed, and the chromophore was confirmed to be suita…
Abstract Das Design, die Synthese und die Selbstorganisation einer neuen Klasse vollständig substituierter Arene, die kolumnare Überstrukturen bilden, werden in diesem Kurzaufsatz detailliert beschrieben. Die Selbstorganisation dieser Moleküle führt zur Bildung von helicalen und polaren Säulen, deren Anordnung mit ele…
Complex permittivity, permeability and electromagnetic wave absorption of α-Fe/C(amorphous) and Fe2B/C(amorphous) nanocomposites, Jiu Rong Liu, Masahiro Itoh, Takashi Horikawa, Masaru Itakura, Noriyuki Kuwano, Ken-ichi Machida
Reflectance calculations for diamond-like carbon (DLC) antireflection thin-film coatings on porous silicon (PS) have been carried out using the optical matrix approach method. Comparison with the reflectance spectrum obtained for other antireflection coatings shows a much lower reflectance with a larger energy range i…
Several sequencing projects unexpectedly uncovered the presence of genes that encode ribulose 1,5-bisphosphate (RuBP) carboxylase/oxygenase (RubisCO) in anaerobic archaea. RubisCO is the key enzyme of the Calvin-Benson-Bassham (CBB) reductive pentose phosphate pathway, a scheme that does not appear to contribute great…
Dramatic enhancement of the $n$-type conductivity of nanocrystalline diamond films by introducing up to $0.2\phantom{\rule{0.3em}{0ex}}\mathrm{at.}\phantom{\rule{0.2em}{0ex}}%$ of nitrogen into the film has been reported. Previously, there were some theoretical predictions about the change of electronic structure of t…
NAD-independent lactate dehydrogenases are commonly thought to be responsible for lactate utilization during the stationary phase of aerobic growth in Lactobacillus plantarum. To substantiate this view, we constructed single and double knockout mutants for the corresponding genes, loxD and loxL. Lactate-to-acetate con…
Magnetocaloric effect (MCE) in low-cost iron-based binary alloys R 2 Fe 17 (R = Y, Pr) has been investigated by measuring their magnetic properties. The Curie temperature of these alloys is found to be close to room temperature. The specific heat measurement of these materials indicates a second order ferromagnetic/pa…
A new technique for direct measurement and visualization of ion transport in electrochromic materials that will be instrumental in formulating and validating physics-based models of electrochemical reactions is presented (see Figure). Initial experimental and modeling results have been obtained by applying the method…
Suspended single-walled carbon nanotube devices comprised of high-quality electrical contacts and two electrostatic gates per device have been prepared. Compared to nanotubes pinned on substrates, the suspended devices exhibit little hysteresis related to environmental factors and act as cleaner Fabry-Perot interferom…
Mesoporous silica platelets with perpendicular nanochannels (see Figure) have been conveniently prepared by using a ternary cetyltrimethylammonium bromide–sodium dodecylsulfate–Pluronic123 surfactant system as a template and sodium silicate as the silica source. The diameter of the fabricated nanochannels is about 7.0…
A nonaqueous synthetic route for the preparation of a regular crystalline yttria mesostructure is presented. The reaction between yttrium alkoxides and benzyl alcohol results in the formation of a highly ordered lamellar nanocomposite consisting of yttria layers with a confined thickness of about 0.6 nm, separated fro…
Small-angle neutron scattering (SANS) has been used to investigate the conformation of linear and cyclic poly(dimethylsiloxane)s (PDMS) in chemically identical, undiluted blends. SANS measurements have been carried out on (1) linear hydrogenous (H) mixed with linear deuterated (D) PDMS and (2) cyclic H mixed with cycl…
An oxamato-bridged CoIICuII chain compound has been obtained via the self-assembly of mononuclear bis-bidentate copper(II) anionic building blocks and cobalt(II) cations. It is the first example of a heterobimetallic ferrimagnetic chain that incorporates slow magnetic relaxation behavior (see Figure).
It is well known that surface plasmon absorption (color) of Au nanoparticles highly depends on its size, shape, and surrounding surface environment, providing a great opportunity for the development of Au nanoparticles as a probe for chemical and biochemical sensing and as a building block for nano-optical devices. Cu…
One monolayer of C60 on one monolayer of hexagonal boron nitride on nickel is investigated by photoemission. Between 150 and 250 K the work function decreases and the binding energy of the highest occupied molecular orbital (HOMO) increases by approx. 100 meV. In parallel, the occupancy of the, in the cold state almos…
Gift wrapped: Biomolecules can be enveloped within an ultrathin shell of an aminopropyl-functionalized magnesium (organo)phyllosilicate to produce aqueous dispersions of discrete protein–inorganic nanoparticles. Similar procedures but with organoclay oligomers that have pendent long-chain hydrophobic moieties result i…
This Minireview details the design, synthesis, and self-assembly of a new class of crowded aromatics that form columnar superstructures. The assembly of these subunits produces helical and polar stacks, whose assembly can be directed with electric fields. In concentrated solutions, these self-assembled helical rods ex…