Materials Literature
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Abstract A new heterometallo‐supramolecular polymer with alternating CuI and FeII ions (polyCuFe) was synthesized by simple 0.5:0.5:1 complexation of CuI and FeII salts with an unsymmetrical ditopic ligand (L1) bearing phenanthroline and terpyridine moieties as the metal coordination sites. Selective complexation was…
Green nanocomposites of poly(lactic acid)/banana fibre/nanoclay were successfully prepared using melt-blending technique followed by injection moulding. Untreated and chemically modified banana fibres and organically modified nanoclay (Cloisite 30B) were used as reinforcing agent within the poly(lactic acid) matrix. T…
Whether silver nanoparticles (AgNPs) degrade and release silver ions (Ag(+)) in vivo has remained an unresolved issue. To evaluate the biodistribution and dissolution behavior of intravenously administered AgNPs in living rats, we employed a knotted reactor (KR) device to construct a differentiation scheme for quantit…
Ni catalyst-based anodes in solid oxide fuel cells (SOFCs) operating with natural gas fuel are vulnerable to coking (carbon deposition) and sulfur poisoning, resulting in impaired anodes and eventual cessation of SOFC operation. The incorporation of as small as 1 atom% W to Ni is found to overcome this formidable chal…
Understanding the crystallization of organic molecules is a long-standing challenge. Herein, a mechanistic study on the self-assembly of crystalline arrays in aqueous solution is presented. The crystalline arrays are assembled from perylene diimide (PDI) amphiphiles bearing a chiral N-acetyltyrosine side group connect…
We present a coarse-grained, continuum kinetic theory for charging supercapacitors with narrow cylindrical nanopores. The theory reveals that the occupancy of a nonpolarized pore and the energy barrier for ion-ion interdiffusion are the key issues controlling the different regimes of dynamic response. For 'ionophobic'…
The efficient synthesis of a new tripodal platform based on a rigid 9,9'-spirobifluorene with three acetyl protected thiol groups in the positions 2, 3' and 6' for deposition on Au(111) surfaces is reported. The modular 9,9'-spirobifluorene platform provides both a vertical arrangement of the molecular rod in position…
The preparation of model, well-controlled colloidal assemblies has been a central approach to understanding and optimizing the characteristics and functionality of complex colloidal dispersion systems. This approach, which has created a significant literature and rather deep understanding for emulsions and foams, has…
It is crucial to understand hydrogen interactions with intrinsic point defects in the hydrogen permeation barrier (HPB) of α-Al2O3, finding underlying reasons for the not-so-low H-permeability of the barrier, and thereby produce samples with tailored defects for optimal performance. Using density functional theory (DF…
The solution-mediated polymorphic transformation from Form II to Form III 2-oxo-1-pyrrolidine acetamide (piracetam) was investigated in seven organic solvents over the temperature range of 5–50 °C. The transformation rate increased as a function of temperature, agitation, and the solubility of piracetam in the host so…
The synthesis of one-dimensional nanostructures with specific properties is often hindered by difficulty in tuning the material composition without sacrificing morphology and material quality. Here, we present a simple solid state diffusion method utilizing atomic layer deposition to controllably alter the composition…
Flower-like Ni–Pt nanoclusters assembled on graphene have been facilely synthesized by a co-reduction route. Thanks to the unique structure and strong interaction with graphene, the as-synthesized Ni3Pt7/graphene nanoclusters exhibit 100% hydrogen selectivity and exceedingly high activity toward hydrogen generation fr…
A self-consistent optimally tuned range-separated hybrid density functional (scOT-RSH) approach is developed. It can simultaneously predict accurate geometries, vibrational modes, and frontier orbital energies. This is achieved by optimizing the range-separation parameter, γ, to both satisfy the ionization energy theo…
Reaction of in situ prepared acylhydrazone ligand with Ln(NO3)3·6H2O and Cu(OAc)2·H2O resulted in the formation of novel isostructural octanuclear Cu6Ln2 compounds (Ln = Dy (1), Tb (2), Gd (3), Y (4)) with an unprecedented octametallic structure, which can be described as an oblate wheel built up from two structurally…
In this study, we report on the synthesis of novel thiol-reactive polymers containing a catechol moiety at their chain ends and demonstrate their application toward surface modification of magnetic nanoparticles. Poly(ethylene glycol) methyl ether acrylate (PEGMEA) based hydrophilic polymers incorporating maleimide gr…
We study lattice thermal transport in large-area polycrystalline graphene, such as the samples grown by chemical vapor deposition (CVD) of carbon on Cu. These systems are composed of single-crystalline grains with a broad range of sizes and crystal orientations, separated by atomically rough grain boundaries. We solve…
The spectroscopic behavior of ionic Eu(3+) or Tb(3+) complexes of an aromatic carboxyl-functionalized organic salt as well as those of the hybrid materials derived from adsorption of the ionic complexes on Laponite clay are reported. X-ray diffraction (XRD) patterns suggest that the complexes are mainly adsorbed on th…
Wetting behavior of a water droplet on nanostructured surfaces is studied by molecular dynamics simulations. The results show that the equilibrium states can be classified into four categories: the Wenzel, the metastable Cassie, the globally steady Cassie, and the Cross state. For the Wenzel state, the equilibrium sta…
The synthesis, structure, and properties of the ordered double perovskites Sr2FeOsO6, Ca2FeOsO6, and SrCaFeOsO6 are reported. The latter two compounds have monoclinic P2₁/n symmetry and a(-)a(-)b(+) tilting of the octahedra, while Sr2FeOsO6 is tetragonal with I4/m symmetry and a(0)a(0)c(-) tilting. Magnetic measuremen…
Abstract New heteroleptic iron complexes mixing a terpyridine bearing a protonable pyridyl substituent (pytpy) and a pyridyl carbene ligand (carb) have been prepared and characterised by UV/Vis spectroscopy, cyclic voltammetry and TD‐DFT computations. The absorption spectrum of [Fe(carb)(pytpy)]2+ showed a notable red…