Materials Literature
按标题、摘要、年份、主题和来源检索公开元数据。结果保留作者、摘要、分类与原始来源链接。
A series of symmetrical cationic phthalocyanines (Pcs) with either Zn(II) or Si(IV) metal ions and two bulky axial ligands on the silicon complexes was synthesized in high yields. The photophysical (absorption, emission, fluorescence, and singlet oxygen quantum yields) and cellular (uptake, toxicity, and subcellular l…
The synthesis of molecularly defined epsilon-caprolactone oligomers and polymers up to the 64-mer, via an exponential growth strategy, is described. By careful selection of orthogonal protecting groups, t-butyldimethylsilyl (TBDMS) ether for the hydroxyl group and benzyl (Bn) ester for the carboxylic acid group, a hig…
We perform density functional calculations on one-dimensional zigzag edge graphene nanoribbons (ZGNRs) of different widths, with and without edge doping including semilocal exchange correlations. Our study reveals that, although the ground state of edge-passivated (with hydrogen) ZGNRs prefers to be anti-ferromagnetic…
We report that a single dipeptide ( l -Phe- l -Phe, FF), which is probably one of the smallest peptide gelators, can self-assemble into long nanofibrils in organic solvents and entangle further to form gels. The obtained FF gels are responsive to temperature, and the FF sol–gel process is thermoreversible. The formati…
Polyvinylidene difluoride (PVDF) fibers were prepared by electrospinning from dimethyl formamide (DMF) solutions. The effects of the electrospinning processing conditions on the formation of the alpha and beta phases of PVDF were studied using infrared spectroscopy and differential scanning calorimetry. We have shown…
The development of quantitative, highly sensitive surface-enhanced Raman spectroscopy (SERS) substrates requires control over size, shape, and position of metal nanoparticles. Despite the fact that SERS has gained the reputation as an information-rich spectroscopy for detection of many classes of analytes, in some iso…
We study the light scattering and surface plasmon resonances of Au nanorods that are commonly used as optical nanoantennas in analogy to dipole radio antennas for chemical and biodetection field-enhanced spectroscopies and scanned-probe microscopies. With the use of the boundary element method, we calculate the nanoro…
Low-pressure chemical vapor deposition allows one to grow high structural quality monolayer graphene on Ir(111). Using scanning tunneling microscopy, we show that graphene prepared this way exhibits remarkably large-scale continuity of its carbon rows over terraces and step edges. The graphene layer contains only a ve…
Experimental solubilities are reported for anthracene dissolved in ternary cyclohexane + 1-propanol + 1-pentanol, cyclohexane + 2-propanol + 1-pentanol, cyclohexane + 1-butanol + 1-pentanol, and cyclohexane + 2-butanol + 1-pentanol solvent mixtures at 298.15 K and atmospheric pressure. For each of the four ternary sol…
Purpose This paper sets out to study the corrosion of No. 20 carbon steel without film and with films of different qualities in high‐temperature boiler water with different Cl − concentrations. Design/methodology/approach The static simulated experiment in high‐pressure autoclave and the surface analysis methods of EP…
Polarized Raman scattering measurements have been performed on ${\mathrm{Na}}_{0.5}\mathrm{Co}{\mathrm{O}}_{2}$ single crystal from $8\phantom{\rule{0.3em}{0ex}}\text{to}\phantom{\rule{0.3em}{0ex}}305\phantom{\rule{0.3em}{0ex}}\mathrm{K}$. Both the ${A}_{1g}$ and ${E}_{1g}$ phonon modes show a softening below ${T}_{c1…
A constitutive model, based on an ( n +1)-phase mixture of the Mori–Tanaka average theory, has been developed for stress-induced martensitic transformation and reorientation in single crystalline shape memory alloys. Volume fractions of different martensite lattice correspondence variants are chosen as internal variab…
A selective, sensitive and rapid liquid chromatography-tandem mass spectrometry method has been developed for the determination of caudatin-2,6-dideoxy-3-O-methy-beta-d-cymaropyranoside (CDMC) in rat plasma. This method involves a plasma clean-up step using liquid-liquid extraction, followed by LC separation and posit…
Si, Ge, and Ti substituted nanotubes have been theoretically investigated. We employed a mixed approach for the computation of the electronic structure of these systems under periodic conditions. Band energy methods were then employed at a pseudopotential and all-electron schemes. The optimized geometries, binding, an…
Abstract A new organic–organic salt, 2‐aminopyridinium‐4‐hydroxybenzenosulfonate, has been synthesised and characterised by means of FT‐IR and FT‐Raman spectroscopies, differential scanning calorimetry (DSC) and single crystal X‐ray crystallography. Its vibrational spectra have been discussed on the basis of quantum c…
Metal–ligand interactions can be used to create coordination polymer multilayers (see picture). Growth is linear with layer and bilayer number, and the bilayer thickness depends on deposition concentration. This approach combines the stability of covalent multilayers with the responsiveness of polyelectrolyte-based mu…
Abstract The substrate‐dependent surface‐enhanced Raman scattering (SERS) of 4‐aminobenzenethiol (4‐ABT) adsorbed on Au surfaces has been investigated. 4‐ABT is one of the very unique adsorbate molecules whose SERS spectral patterns are known to be noticeably dependent on the relative contribution of chemical enhancem…
Pure poly(lactide-co-glycolide) and polystyrene surfaces are not very suitable to support cell adhesion/spreading owing to their hydrophobic nature and low surface energy. The interior surfaces of large porous 3D scaffolds were modified and activated using radio-frequency, low-pressure air plasma. An increase in the w…
Abstract Terpolymers have been prepared by the condensation of 2,4‐dihydroxyacetophenone (2,4‐HA) and dithiooxamide (D) with formaldehyde (F) in the presence of hydrochloric acid as catalyst with varying the molar proportions of the reactant. Compositions of the terpolymer have been determined by elemental analysis. T…
Abstract In the present study, the effect of deposition pressure on the deposition rate and various properties of diamond‐like carbon (DLC) coatings were investigated. The DLC coatings were deposited on Si substrates using a bipolar‐type plasma‐based ion implantation and deposition plasma based ion implantation and de…