Materials Literature
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A set of new octupolar merocyanine chromophores was designed and synthesized. These compounds were prepared from the reaction of 1,3,5-triformyl-2,4,6-trihydroxybenzene with heterocyclic nucleophiles. Octupolar dyes were formed exclusively in their open-dye form. The one- and two-photon-absorption spectra of the dyes…
Abstract Bifunctional, trifunctional, and tetrafunctional epoxy (EP) resins were hardened with stoichiometric amount of 4,4′‐diaminodiphenyl methane in presence and absence of benzoxazine (BOX). The EP/BOX ratio of the hybrid systems was constant, viz. 50/50 wt %. For the bifunctional EP, the EP/BOX range covered the…
We report photocatalytic H(2) production by hydrogenase (H(2)ase)-quantum dot (QD) hybrid assemblies. Quenching of the CdTe exciton emission was observed, consistent with electron transfer from the quantum dot to H(2)ase. GC analysis showed light-driven H(2) production in the presence of a sacrificial electron donor w…
An arylated-carbazole conjugated polymer with a deep HOMO level has been developed. Solar cells based on blends of PCX3 and PC(71) BM show efficiency of 3.9% with a V(oc) of 0.96 V. The device performance can be improved to 5.1% by using polar solvent treatment, most likely as a result of modified interfacial properti…
Aligned carbon and titanium dioxide nanotubes are designed at the electrode interface to improve the charge separation and transport. The resulting organic photovoltaic wire exhibits high power conversion efficiency. This flexible photovoltaic wire can be easily integrated into a textile by a conventional weaving tech…
A combination of plasma and microwave flash sintering is used to sinter an inkjet-printed and tailored silver nanoparticle formulation. By using two sintering techniques sequentially, the obtained conductivity is 60%, while keeping the processing temperature well below the glass transition temperature (T(g)) of the us…
Gecko-inspired arrays of micropillars made of a liquid crystalline elastomer display thermoswitchable adhesive behavior as a consequence of elongation changes caused by reorientation of the mesogens at the nematic-isotropic (N-I) phase transition.
In recent years reusable and highly active metal-nanoparticle catalysts were developed for the selective transformation of hydrosilanes into the corresponding silanols using water as the oxidant. The catalysts are much more active than conventional homogeneous ones under ambient conditions. In this perspective, we sum…
We introduce a new approach to improve structural and dynamical determination of large metalloproteins using solid-state nuclear magnetic resonance (NMR) with (1)H detection under ultrafast magic angle spinning (MAS). The approach is based on the rapid and sensitive acquisition of an extensive set of (15)N and (13)C n…
Isostructural cubane-shaped catalysts [Co(III)(4)(μ-O)(4)(μ-CH(3)COO)(4)(p-NC(5)H(4)X)(4)], 1-X (X = H, Me, t-Bu, OMe, Br, COOMe, CN), enable water oxidation under dark and illuminated conditions, where the primary step of photoinduced electron transfer obeys to Hammett linear free energy relationship behavior. Ligand…
ABSTRACT We report on improvements to the energy conversion efficiency of wide bandgap (Eg > 1.2 eV) solar cells on the basis of CuIn1−xGaxSe2. Historically, attaining high efficiency (>16%) from these types of compound semiconductor thin films has been difficult. Nevertheless, by using (a) the alkaline‐containing hig…
Patterned metal-organic framework, ZIF-8 thin films can be generated by using standard photolithography or via selective growth with the aid of microcontact printing. The alternate chemical deposition (of ZIF-8) and physical deposition (of metallic materials) allow the insertion of metal layers in the ZIF-8 film that…
Engineered nanomaterials offer numerous and tantalizing opportunities in many sectors of society, including medicine. Needless to say, attention should also be paid to the potential for unexpected hazardous effects of these novel materials. To date, much of the nanotoxicology literature has focused on the assessment o…
Active sites and structure–activity relationships for methanol synthesis from a stoichiometric mixture of CO 2 and H 2 were investigated for a series of coprecipitated Cu-based catalysts with temperature-programmed reduction (TPR), X-ray diffraction (XRD), transmission electron microscopy (TEM), X-ray photoelectron sp…
Novel theranostics based on photosensitizer-conjugated carbon dots is reported. The prepared C-dots–Ce6 has good stability and high water dispersibility and solubility, non-cytotoxicity, good biocompatibility, enhanced photosensitizer fluorescence detection and remarkable photodynamic efficacy upon irradiation. The C-…
Solid films are usually metastable or unstable in the as-deposited state, and they will dewet or agglomerate to form islands when heated to sufficiently high temperatures. This process is driven by surface energy minimization and can occur via surface diffusion well below a film's melting temperature, especially when…
Abstract The short peptides that specifically bind to SnO2 nanoparticles (NPs) were selected by using a phage display method. After the fourth round selection, ten kinds of amino acid sequences were identified, and it was revealed that affinities of the obtained phages for SnO2 NPs were relatively higher than that of…
Single-walled carbon nanotube:poly(3,4-ethylenedioxythiophene)/poly(styrene sulfonate) hybrid film (SWCNT:PEDOT/PSS) hybrid conducting film was obtained by using spray-coating technique, based on which a white flexible organic light emitting diode (FOLED) was fabricated with the structure of SWCNT:PEDOT/PSS/N,N-diphen…
We report on a demonstration of top-gated graphene field-effect transistors (FETs) fabricated on epitaxial SiC substrate. Composite stacks, benzocyclobutene and atomic layer deposition Al 2 O 3 , are used as the gate dielectrics to maintain intrinsic carrier mobility of graphene. All graphene FETs exhibit n-type trans…
Abstract In order to obtain a high quality protective plating coating on Mg–16Li–5Al–0.5RE alloy, a zinc dipping technique at room temperature was investigated. The zinc dipping technique included two immersion processes, the primary immersion process and the secondary immersion process. Primary zinc transition layers…