Materials Literature
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Thermochromic VO2 nanoparticles have been dispersed into polyvinyl pyrrolidone (PVP) fibers by electrospinning of a VO2-PVP blend solution. The structure and optical properties of the obtained composite fiber mat were studied by X-ray diffraction (XRD), scanning electron microscopy (SEM), ultraviolet-visible (UV-Vis)…
A well-crystallized Ti-incorporated metal organic framework, MIL-125(Ti), synthesized using a solvothermal method, was introduced into NaAlH4 as the catalyst precursor to improve the dehydrogenation–hydrogenation kinetics. Adding 5 wt% MIL-125(Ti) dramatically decreased the operating temperatures and improved the reac…
The synthesis and self-assembly of a series of copolyesters incorporating varying mol ratios of an achiral oligo(p-phenylenevinylene) (OPV) into the backbone of a chiral poly(L-lactic acid) (PLLA) via high temperature solution blending is reported. The polymers were characterized by 1H NMR spectroscopy and size exclus…
N-Fused [22]pentaphyrin(1.1.1.1.1) transformed into recombined N-fused pentaphyrin bromide after treatment with N-bromosuccinimide. This bromide was highly reactive to nucleophiles to give the corresponding substituted products including aminated, oxidized, and unsubstituted derivatives.
We have proposed recently that the DO3A-N-α-(amino)propionate chelator and its amide conjugates are leads to targeted, high relaxivity, safe contrast agents for magnetic resonance imaging. In this work we illustrate further the expeditious nature and robustness of the synthetic methodologies developed by preparing the…
A novel unsymmetrical diarylethene with an imidazo [4,5‐ f ] [1,10] phenanthroline unit has been synthesized, and its properties including photochromism and fluorescence have been investigated. It showed favorable photochromism and functioned as notable fluorescence switches by photoirradiation in both solution and a…
Uniform silica/ultrasmall silver composite microspheres have been successfully prepared from silica microspheres and [Ag(NH <sub>3</sub> ) <sub>2</sub> ] <sup>+</sup> <italic>via</italic> a hydrothermal process. The as-prepared silica/Ag microspheres exhibit an excellent antibacterial performance towards <italic>E. co…
Diblock brush terpolymers (DBTs) with different fluorinated methacrylate-based block segments are synthesized through sequential ring-opening metathesis polymerizations and are used to prepare polymer thin films with predictable film thicknesses. These DBTs exhibit preferable substrate vertical alignments within the f…
We use quasi-steady-state photoinduced absorption (PIA) to study charge generation in blends of poly(3-hexylthiophene-2,5-diyl) (P3HT) with PbS nanocrystal quantum dots as a function of excitation energy. We find that, per photon absorbed, the yield of photogenerated holes present on the conjugated polymer increases w…
The controlled patterning of anisotropic gold nanoparticles is of crucial importance for many applications related to their optical properties. In this paper, we report that gold nanorods prepared by a seed-mediated synthesis protocol (without any further functionalization) can be selectively deposited on hydrophilic…
The results of measurements on solar cells made from randomly aligned thin films of single walled carbon nanotubes (SWCNTs) on n-type monocrystalline silicon are presented. The films are made by vacuum filtration from aqueous TritonX-100 suspensions of large diameter arc-discharge SWCNTs. The dependence of the solar c…
Laser-ablated lanthanide metal atoms were condensed with OF2 in excess argon or neon at 4 K. New infrared absorption bands were observed and assigned to the oxidative addition products OLnF2 and OLnF on the basis of (18)O isotopic substitution and electronic structure calculations of the vibrational frequencies. The d…
A series of multifunctional phosphors Y2WO6: Ln(3+) (Ln = Eu, Sm, Dy) were prepared by solid state reaction. The phase purity, luminescent properties and energy transfer from WO66- to Ln(3+) are investigated by the X-ray diffractometer, photoluminescence and cathodoluminescence spectra, as well as decay lifetimes, res…
BN ‐ZrO 2 ‐SiC composites were fabricated with different ZrO 2 contents ranging from 0 to 40 vol%. The mechanical properties and corrosion resistance against molten steel increase with increasing ZrO 2 content, while thermal shock resistance decreases gradually. When ZrO 2 content is 40 vol%, the flexural strength is…
Composites of poly(3,4-ethylenedioxypyrrole) or PEDOP and poly(3,4-ethylenedioxythiophene) or PEDOT enwrapped Sb2S3 nanorods have been synthesized for the first time for use as supercapacitor electrodes. Hydrothermally synthesized Sb2S3 nanorods, several microns in length and 50-150 nm wide, offer high surface area an…
In this report, we explore the capability of macromolecules to interdigitate into densely grafted molecular brush copolymers. We demonstrate that by using the tendency for stereocomplexation between poly(l-lactide) and poly(d-lactide) as a driving force complementary linear polymers and brush copolymers can form a ste…
Interaction of solid KBH 4 with liquid Al(BH 4 ) 3 at room temperature yields a solid bimetallic borohydride KAl(BH 4 ) 4 . According to the synchrotron X-ray powder diffraction, its crystal structure (space group Fddd, a = 9.7405(3), b = 12.4500(4), and c = 14.6975(4) Å) contains a substantially distorted tetrahedral…
The aim of this study was to introduce bioactivity to the electrospun coating for implantable glucose biosensors. Coaxial fibre membranes having polyurethane as the core and gelatin as the shell were produced using a range of polyurethane concentrations (2, 4, 6 and 8% wt/v) while keeping gelatin concentration (10% wt…
The effects of doping ZnO nanowires with Al, Ga and Sb on their electronic structure and thermoelectric properties are investigated by first-principles calculations. We find that the band gap of ZnO nanowires is narrowed after doping with Al and Ga, while band gap broadening is observed in Sb doped ZnO nanowires. The…
Yolk–shell nanostructures, or nanorattles, are created by growing metal nanoparticles exclusively inside hollow porous polymer nanocapsules. Metal ions enter the nanocapsules through size-selective nanopores. Synthesis of metal nanoparticles is initiated by an agent entrapped in nanocapsules. Tannic acid, β-cyclodextr…