Materials Literature
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Well‐defined AB‐type miktoarm star‐shaped polymers with a polyhedral oligomeric silsesquioxane (POSS) core are prepared by combination of the “core‐first” and “arm‐first” approaches using ring‐opening polymerization (ROP) and copper‐catalyzed azide–alkyne cycloaddition (CuAAC) click reactions. The clickable octakis‐az…
For the purpose of improving the interface adhesion strength and thermal shock resistance of SiC coating for C/C–ZrC–SiC composites, a carbon nanotube (CNT)-toughened interlocking buffer layer was constructed between the SiC coating and C/C–ZrC–SiC substrates by pre-oxidation and chemical vapor deposition . After inco…
The relationship between particle size and cytogenotoxicity of ZnO particles was systematically studied in vitro using WIL2-NS human lymphoblastoid cells. Before toxicity measurements, the ZnO particles of three different sizes (26 nm, 78 nm, and 147 nm) were well characterized for their physical and chemical properti…
Molybdenum ditelluride (MoTe 2 ) is known to have two different crystal phases: α-MoTe 2 and β-MoTe 2 . α-MoTe 2 is the polytype stable below 815 °C, and β-MoTe 2 is stable above 900 °C. Here, we report changes in the structure and composition of each single crystal during heating in low and high vacuum conditions. Co…
Recently, using graphene oxide (GO) for “carbocatalysis” has been very attractive as a novel application of graphene-based nanomaterials and is expected to open a host of possibilities for chemical synthesis because of the abundance of natural carbon sources, as well as the low density, extensive chemical functionaliz…
The IQ Consortium reports on the current state of process analytical technology (PAT) for active pharmaceutical ingredient (API) manufacturing in branded pharmaceutical companies. The article describes the application of PAT in manufacturing and provides representative examples in four common pharmaceutical unit opera…
κ 5 -(Me 3 SiNCH 2 CH 2 ) 2 N(CH 2 CH 2 NSiMe 2 CH 2 )Zr ( 1 ) has been found to dehydrocouple amine borane substrates, RR′NHBH 3 (R = R′ = Me; R = t Bu, R′ = H; R = R′ = H), at low to moderate catalyst loadings (0.5–5 mol %) and good to excellent conversions, forming mainly borazine and borazane products. Other zirco…
This paper discloses the design, synthesis, and imaging applications of the first member of a new class of SPOTs, small-molecule photoactivatable optical sensors of transmembrane potential. SPOT2.1.Cl features an established voltage-sensitive dye, VoltageFluor2.1.Cl--or VF--capped with a dimethoxy-o-nitrobenzyl (DMNB)…
Learning nature's approach to modulate photophysical properties of NIR porphyrinoids by fine-tuning β-substituents including the number and position, in a manner similar to naturally occurring chlorophylls, has the potential to circumvent the disadvantages of traditional "extended π-conjugation" strategy such as stabi…
ABSTRACT Ionomers–polymers with bound ionic moieties—have received interest for their exceptional properties including high toughness and ion conductivity. One of the primary effects of introduction of covalently bound ions to a polymer is alteration of its glass transition and segmental dynamics. The standard model f…
Three neutral dinuclear p -cymene ruthenium complexes ( 1a – 1c ) of the general formula ( p -cymene) 2 Ru 2 (μ 4 -L)Cl 2, bridged by substituted hydroxybenzoquinonato spacers (L a = 2,5-dihydroxy-3-phenyl-1,4-benzoquinonato; L b = 2,5-dihydroxy-3,6-diphenyl-1,4-benzoquinonato; L c = 2,5-dihydroxy-3,6-(3,5-dimethylphe…
Fe 3 O 4 based magnetic polymer nanoparticles (MPNPs) are densely studied for several decades. These Fe 3 O 4 based MPNPs can be used in wastewater treatment and biological field such as magnetic resonance imaging contrast agents, hyperthermia therapy and protein separation. The Fe 3 O 4 based MPNPs are attractive bec…
In this study, ZnS powders with homogeneous morphology were synthesized using a colloidal processing method. Vacuum hot pressing was subsequently applied to consolidate the ZnS powders into infrared transparent ceramics (77.3% transmittance at wavelengths of 6.74 and 9.29 μm). The phase composition of the sintered ZnS…
Closed cell elastomeric polydimethylsiloxane (PDMS) based polymerized medium internal phase emulsions (polyMIPEs) containing an aqueous solution of sodium hydrogen carbonate (NaHCO3) have been produced. Via thermal decomposition of NaHCO3, carbon dioxide was released into the polyMIPE structure to act as a blowing age…
Nuclear magnetic resonance (NMR) spectroscopy has become a prime means of determining chemical structure. Currently nanoscale NMR has the sensitivity for single-spin detection, yet its resolution is too poor. The authors using diamond NV centers to improve spectral resolution by orders of magnitude, to the subkilohert…
Graphene has been heralded as a promising electrode material for high energy and power density electrochemical supercapacitors. This is in spite of recent work confirming the low double-layer capacitance ( C DL ) of the graphene/electrolyte interface limited by graphene’s low quantum capacitance ( C Q ), an effect kno…
BiCuSeO has recently been shown to be one of the best oxide-based thermoelectric materials. The electrical properties of this material have been widely studied; however, the reasons for its intrinsically low thermal conductivity have only been briefly discussed. In this paper, we calculated the band structure and the…
We report the synthesis and transfer of epitaxial germanane (GeH) onto arbitrary substrates by electrochemical delamination and investigate its optoelectronic properties. GeH films with thickness ranging from 1 to 600 nm (2–1000 layers) and areas up to ∼1 cm 2 have been reliably transferred and characterized by photol…
A triol-functional crosslinker combining the thermoreversible properties of Diels-Alder (DA) adducts in one molecule is designed, synthesized, and used as an ideal substitute of a traditional crosslinker to prepare thermal recyclable cross-linked polyurethanes with excellent mechanical properties and recyclability in…
Thanks to the MeCN hydrolysis in situ reaction, a [2 × 2] square grid Dy(III)4 cluster based on a polypyridyl triazolate ligand, [Dy4(OH)2(bpt)4(NO3)4(OAc)2] (1), was separated successfully and characterized through single-crystal X-ray diffraction and SQUID magnetometry. The frequency-dependent signals in the out-of-…