Materials Literature
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Gebündelte Proteine: Mit Streptavidin als Linker zwischen Eisen(II)-Terpyridinbis(biotin)-Einheiten entsteht ein eindimensionales metall-organisches Proteingerüst (MOPF). In Gegenwart von Calciumionen und Kohlendioxidgas bilden die MOPFs Proteinbündel, die als Templat der Biomineralisation von Calcit wirken.
At 2004, Osaka Gas Co., Ltd. and Kyocera Corporation launched joint development of SOFC residential cogeneration system, aiming for the commercialization. To demonstrate the technical achievement, we installed SOFC residential cogeneration system in a house and carried out operation. At rated power, ac 1kW, net ac eff…
We studied the effects of catalyst introduction methods using poly(amidoamine) (PAMAM) dendrimers on the nickel patterning of polyelectrolyte multilayer (PEM)-coated substrates. Three different approaches to palladium catalyst introduction using microcontact printing as the patterning technique were utilized and compa…
Mixed electronic/ionic conducting (MIEC) cathode materials are qualified for the application in intermediate-temperature SOFCs. The area specific resistance of MIEC cathodes is likewise determined by chemical composition and microstructure. A three-dimensional finite element method model, which is capable to analyze a…
While SOFCs are the most flexible fuel cells with respect to fuel selection, fuel impurities in practical SOFC fuels can cause degradation of electrodes and thus electrochemical performance. The understanding of fuel impurity poisoning and the increase in tolerance are therefore of technological relevance for SOFC com…
Countercation size specificity is presented for the electrolyte-induced aggregation of 3,3'-disulfopropyl-5,5'-dichloro-9-methyl thiacarbocyanine (TCC) dye in aqueous solution. Addition of electrolytes having a small monovalent cation (Na+, NH4+, or Cs+) induced pure H aggregates of TCC, whereas J aggregates were pref…
Metal supported solid oxide fuel cells (MSCs) show a high poten- tial predominantly for an application as light-weight planar cells for electricity supply systems in cars and other mobile systems. One of the most promising MSC concepts is the plasma sprayed thin film concept of DLR-Stuttgart in which powder metallurgi…
The synchrotron radiation excited emission and excitation spectra are reported at temperatures of 298 and $10\phantom{\rule{0.3em}{0ex}}\mathrm{K}$ for ${\mathrm{YAlO}}_{3}$ (YAP) doped with $1\phantom{\rule{0.3em}{0ex}}\mathrm{at.}\phantom{\rule{0.2em}{0ex}}%$ ${\mathrm{Nd}}^{3+}$ or ${\mathrm{Er}}^{3+}$. For both sy…
Malonyl-CoA: acyl carrier protein transacylase (MCAT) is a critical enzyme responsible for the transfer of the malonyl moiety to holo-acyl carrier protein (ACP) forming the malonyl-ACP intermediates in the initiation step of type II fatty acid synthesis (FAS II) in bacteria. MCAT has been considered as an attractive d…
Not what you'd expect: Contrary to what is usually believed for oxide surfaces, density functional calculations show that not F centers but missing ZnO dimers are the thermodynamically most favorable type of atomic defect on the nonpolar ZnO surface. Simulated STM data may serve as a fingerprint for experimental ident…
Abstract A conceptual model is proposed for the viscoelastic response of dilute polymer solutions containing well‐dispersed low volume fraction spherical particles. The equilibrium structure of the reversibly adsorbed polymer layer on the particle surface was characterized by a scaling theory. The dynamics of the poly…
We develop two nonequilibrium simulation methods which are suitable for calculation of thermal conductivity with good accuracy. These methods are based on simple algorithms, and it will be very easy to extend their range of application. In particular, there are no restrictions (from, e.g., the force field) to apply th…
Trans–cis isomerization was investigated in a room temperature liquid crystal mixture of two azoxybenzene compounds. Experiments were performed on isolated molecules in dilute solutions and on the liquid crystal phase composed of the pure compounds. The absorption spectra of the trans and cis isomers were found to be…
In this paper, a wealth of notations introduced in the past 30 years to denote second‐rank orientational order parameters for biaxial nematics are compared, stressing sources of possible confusion. A unifying, intrinsic treatment of the second‐rank orientational order parameters is also presented, which does not suffe…
The objective of this study was to synthesize and characterize a thermally responsive polymer-metal nanocomposite system comprised of a solid gold nanoparticle core and thermally responsive interpenetrating polymer network (IPN) shell, which was surface functionalized or PEGylated with a covalently bound linear poly(e…
The impact of nanoarchitecture on the electrical properties of sol–gel-derived Ce0.9Gd0.1O2 (CGO) is evaluated in O2 from 350 to 600 °C. The high degree of interconnectivity established between the < 10 nm crystallites in CGO aerogels (see figure) yields an electroceramic that responds as though it contains no grain b…
Human carbonic anhydrase (hCAII) is a metalloenzyme that catalyzes the reversible hydration of carbon dioxide to bicarbonate and is associated with glaucoma (a major cause of blindness). The present study focuses on the use of cerium oxide nanoparticles (nanoceria) as a potential delivery device for hCAII inhibitors.…
We investigated the influence of a substituent and a Lewis base on boron upon the thermodynamic stability of metal complexes of borane-Lewis base adducts, [M(CO)5(eta1-BH(2)R.L)] (M=Cr, W) and [CpMn(CO)2(eta1-BH2R.L)], where R=Cl, I, m-C6H4F, Ph, H, Me, Et; L=PMe3, PPh3, NMe3, quinuclidine. In these compounds, the sta…
Cellulose microfibers were coated with enzymes, laccase and urease, through layer-by-layer assembly by alternate adsorption with oppositely charged polycations. The formation of organized polyelectrolyte and enzyme multilayer films of 15-20 nm thickness was demonstrated by quartz crystal microbalance, zeta-potential a…
Porcine pancreatic lipase (PPL) has been successfully immobilized in the mesoporous channels of SBA-15 with different pore diameters (6.7, 8.0, and 13.0 nm). The amount of enzyme adsorbed in the channel of the supports is found to be related to the pore diameters of SBA-15. It is observed that SBA-15 with a pore size…