Materials Literature
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Two donor–acceptor copolymers (P1 and P2) containing isoindigo as the acceptor unit and the benzodithiophene and bisthiophene‐dithieno[3,2‐b:2′,3′‐d]‐pyrrole as the donor unit have been designed and synthesized by the Pd‐catalyzed Stille coupling reaction. The copolymers show broad and flat absorption, exhibit good so…
Using discontinuously rate thickening suspensions (DRTS) as a model system, we show that beads-on-a-string morphologies can arise as a result of external viscous drag acting during capillary-driven breakup of a non-Newtonian fluid. To minimize the perturbative effect of gravity, we developed a new experimental test pl…
The radical copolymerization kinetics of methyl methacrylate (MMA) and poly-ϵ-caprolactone macromonomer functionalized with a vinyl end group (HEMA-CL(n)) is studied using a pulsed-laser technique. The reactivity ratios for this system are near unity, while a linear relationship between k(p,cop), the copolymer-average…
The complete genome sequence of a novel halophilic archaeon, Salinarchaeum sp. strain HArcht-Bsk1(T), was determined using next-generation sequencing. The genome comprises a 3,255,260-bp circular chromosome with a G+C content of 66.7%. Automatic annotation of the genome revealed a single rRNA operon, 45 tRNAs, and 3,0…
Using the finite-difference time-domain simulation, we show that if a gradient-index or binary planar dielectric microlens that focuses light at the output surface has a near-focus subwavelength slit the focal spot width is determined by the slit width. Notably, the slit allows the output light proportion to be increa…
The variational theory of momentum dependent local-ansatz (MLA) has been generalized by introducing a hybrid (HB) wavefunction as a starting wavefunction, whose potential can flexibly change from the Hartree-Fock type to the alloy-analogy type by varying a weighting factor from zero to one. Numerical results based on…
Purpose The purpose of this paper is to assess the blast‐mitigation potential and the protection ability of an air‐vacated buffer placed in front of a target structure under realistic combat‐theatre conditions. Design/methodology/approach The blast‐mitigation efficacy of the air‐vacated buffer concept is investigated…
The electrochemical oxidation of a next generation low bandgap high performance photovoltaic material namely poly[4,8-bis-substituted-benzo[1,2-b:4,5-b0]dithiophene-2,6-diyl-alt-4-substituted-thieno[3,4-b] thiophene-2,6-diyl] (PBDTTT-c) thin film was investigated using a scanning droplet cell microscope. Cyclic voltam…
Inhibitionsmechanismen: Isocyanide inhibieren stark die [Fe]-Hydrogenase. Röntgenkristallographie und Röntgenabsorptionsspektroskopie belegen, dass das Isocyanid in trans-Stellung zum Acylkohlenstoffatom am Fe-Zentrum koordiniert und dort kovalent an das Sauerstoffatom der Pyridinol-Hydroxygruppe bindet. Diese Ergebni…
Reverse iodine transfer polymerization (RITP), offering the appealing potential of the in situ generation of transfer agents out of molecular iodine I2, is employed in the synthesis of anionic amphiphilic diblock copolymers of poly(styrene) and poly(acrylic acid). Starting with well-characterized poly(styrene) as macr…
The (13)C nuclear spin-lattice relaxation time of (13)CO and (13)CO2 molecules adsorbed in the metal-organic frameworks (MOFs) Cu2.97Zn0.03(btc)2 and Cu3(btc)2 is investigated over a wide range of temperatures at resonance frequencies of 75.468 and 188.62 MHz. In all cases a mono-exponential relaxation is observed, an…
We present an exhaustive study of the coherent heat transport through superconductor-ferromagnet (SF) Josephson junctions including a spin-filter (I${}_{\mathrm{sf}}$) tunneling barrier. By using the quasiclassical Keldysh Green's function technique we derive a general expression for the heat current flowing through a…
The cubic YbPd compound undergoes two first-order phase transitions at \(T_{1}=125\) K and \(T_{2}=105\) K. We report the experimental results of the X-ray diffraction (XRD) and electron diffraction of single crystals of YbPd at low temperatures. Below \(T_{1}\), the \((h00)\) Bragg peaks (\(h\): an integer) are split…
An extension of Onsager's second virial theory is developed to describe the isotropic-nematic phase transition of tangent hard-sphere chain fluids. Flexibility is introduced by the rod-coil model. The effect of chain-flexibility on the second virial coefficient is described using an accurate, analytical approximation…
The equivalent magnetic noise of magnetostrictive-piezoelectric composite sensors, in the passive mode or when magnetic modulation techniques are used, has been investigated theoretically and compared with measurements. Several main noise sources and their contributions to the equivalent magnetic noise spectral densit…
Low energy electron-attachment-induced damage in DNA, where dissociation channels may involve multiple bonds including complex bond rearrangements and significant nuclear motions, is analyzed here. Quantum mechanics/molecular mechanics (QM/MM) calculations reveal how rearrangements of electron density after vertical e…
Results on simultaneous atomic force microscopy (AFM) and fluorescence microspectroscopy on single nanoparticles of the conjugated polymer poly[2-methoxy-5-(2-ethylhexyloxy)-1,4-phenylenevinylene] (MEH-PPV) are presented. Single particle fluorescence spectra and defocused images confirm that the particles are composed…
Novel supramolecular phosphorescent polymers (SPPs) are synthesized as a new class of solution-processable electroluminescent emitters. The formation of these SPPs takes advantage of the efficient non-bonding assembly between bis(dibenzo-24-crown-8)-functionalized iridium complex monomer and bis(dibenzylammonium)-teth…
In this study, we modified a surface plasmon resonance immunosensor chip with a polymer using surface-initiated atom transfer polymerization (SI-ATRP) for the highly sensitive detection of 2,4,6-trinitrotoluene (TNT). To immobilize a TNT analogue on the polymer, mono-2-(methacryloyloxy)ethylsuccinate (MES), which has…
Abstract In this theoretical study, the sensitivity of Fe4S4 cluster properties, such as potential energy, spin coupling, adiabatic detachment energy, inner‐sphere reorganization energy, and reactivity, to structural distortions is investigated. [Fe4S4(SH)4]3−/2−/1− model clusters anchored by fixed hydrogen atoms are…