Materials Literature
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Transparent and conductive films were grafted covalently on glass and ITO substrates with polysilsesquioxane having octithiophene, and their charge transport properties, were studied by electrochemical means. The cyclic voltammogram of oligothiophene fixed in silsesquioxane network was found to be broad because the co…
We propose a simple approach to probe the formation dynamics of honeycomb structures induced by breath figures. A honeycomb film with different domains was obtained by interrupting the condensation of breath figures. The morphologies of different domains indicate that the condensed water droplets grow during their arr…
p-Phosphonic acid calix[4]arenes render high stability to exfoliated graphenes in water. These calix[4]arenes modified graphenes can be used as highly effective substrates to nucleate ultra-small Pd nanoparticles, which in turn serve as galvanic reaction templates for the generation of high density 2D arrays of Pt nan…
The serendipitous self-assembly of the complex [Mn(III)(2)Zn(II)(2)(Ph-sao)(2)(Ph-saoH)(4)(hmp)(2)] (1),whose magnetic core consists solely of two symmetry equivalent Mn(iii) ions linked by two symmetry equivalent -N-O- moieties, provides a relatively simple model complex with which to study the magneto-structural rel…
The silver nanoparticles are synthesized by using microbial reduction of silver ions in the presence of fungus Aspergillus flavus . The fungus , Aspergillus flavus when challenged with silver nitrate solution accumulated silver nanoparticles on the surface of its cell wall in 96 hr . The silver nanoparticles synthesiz…
We investigate the phase transition pressure, elastic and thermodynamic properties of CaPo by the first-principles plane wave pseudo-potential method in the framework of density functional theory. By the isoenthalpy principle, the phase transition pressure from B1 structure to B2 structure is found to be about 22.8GPa…
The surface of a p-Cu2O semiconductor photoelectrode was modified by electrodeposition of Pt nanoparticles and analyzed by XRD, SEM, XPS, and EIS (electrochemical impedance spectrometry) methods besides photocurrent measurements. The XRD, SEM, and XPS analyses showed the fabrication of Cu2O film and the deposition of…
Chiroptical activity tuning polymerization in liquid crystal (LC) electrolyte solution under irradiation of UV or Vis light was performed.
We report here for the first time a multi-scale study on the concept of spin-crossover compounds, which integrates improved density functionals, a polarizable force field and hybrid QM/MM calculations. This multi-scale setup is applied to the temperature dependence of spin states of a Fe(II) compound with trispyrazoly…
We report on the in situ synthesis of fluorescent poly(norbornene)/oxazine-1 (Ox1) dye loaded fluoromica mineral Somasif (SME) hybrid materials. SME acts as host for supramolecular arrangement of Ox1 molecules in their 2D interlayer region. The dye arrangement is easily tuned by modulating the dye loading as well as b…
Controlled growth of nanocrystals (NCs) is produced by self-seeded nucleation with preferential thermodynamic stability. The intermediate reactants undergo in situ phase transformation forming the final products. The growth followed by irreversible phase transformation leads to the complete separation of nucleation an…
Understanding of mechanisms affecting degradation, durability and performance of solid oxide fuel cell (SOFC) stacks and integrated systems has become important due to increasing worldwide deployment. A novel simulation approach accounting for state-of-the-art understanding of degradation mechanisms in the context of…
The new polymer presents a p-doping process with anion exchange and its electrochemical reduction with cation exchange during potential cycling. Stored specific charges of 38 mAh g(-1) for the polymer reduction and 13 mAh g(-1) for its oxidation make the material very promising for fast charge/discharge batteries or s…
The electrical properties of Y-doped barium cerate (BaCe 0.85 Y 0.15 O 3−δ ; BCY) were studied as a function of both oxygen partial pressure (−3.34 ≤ log /atm ≤ −2.72) and water vapor activity (−3.34 ≤ log /atm ≤ −2.72) in the temperature range of 700–800°C. The total conductivity slightly increased in reducing atmosp…
Colloidal cadmium chalcogenide quantum dots can exhibit a drastic change in structure and conformation by addition of a metal cation with a positive redox potential. CdTe and CdSe nanoparticles mixed with a mercury cation were transformed into alloyed anisotropic structures with red-shifted optical properties. Additio…
Using photoluminescence and infrared spectroscopy techniques, we have investigated the influence of surface molecular composition of porous silicon (PS) on the character of its photoluminescence spectra. The main absorption bands of PS in the infrared spectral range are found to be caused by hydride passivation of sil…
Depending on the Cu(II)/ligand molar ratio, a pyrimidine-based ligand generates a tetranuclear grid (1/1) or a dinuclear stick (2/1). EPR, MS and visible spectroscopy studies suggest that dilution produces partial dissociation of the grid in solution. Replacement of 2-H-pyrimidine by a 2-phenyl-triazine unit prevents…
The hydrogen embrittlement characteristics of a Mn–Al bainitic steel for railway crossings were studied by means of the slow strain rate test (SSRT), the delayed fracture test and X-ray diffraction (XRD) analysis. The binding energies and hydrogen diffusion barriers of an iron unit cell were tested separately with Al,…
We studied a hydrophilic, plasticized bionanocomposite system involving sorbitol plasticizer, amylose biopolymer, and montmorillonite (MMT) for the presence of competitive interactions among them at different moisture content. Synchrotron analysis via small angle X-ray scattering (SAXS) and thermal analysis using diff…
In this study, we combined atomic layer deposition and anodic aluminum oxide (AAO) on a silicon substrate and developed self-aligned nanotube arrays. We studied the growth mechanism of nanotubes on the inner wall of AAO at 100 and . We found that at , grew in a layer-by-layer manner. Therefore, it can be grown into na…