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Electrochromism of Polyaniline Film Incorporating a Red Quinone 1‐Amino‐4‐bromoanthraquinone‐2‐sulfonate
A red quinone 1‐amino‐4‐bromoanthraquinone‐2‐sulfonate (BA) was electroreduced to produce the corresponding colorless dihydroxy compound. The peak potential separation for the electrode reaction of BA was drastically decreased by covering it with polyaniline film: ca. 0.8 V for a bare ITO electrode, ca. 0.1 V for the…
Organic Electroluminescence Device Based on an Electrodeposited Poly(3‐substituted thiophen) Film
An electrochemically deposited composite film of poly(3‐substituted thiophen) and insulating nitrile butadiene rubber (NBR) was used as the emission layer of a polymer electroluminescence (EL) device. The composite film on an ITO substrate was uniform, and by using this film current leakage was prevented. The device w…
Vibrational entropy and microstructural effects on the thermodynamics of partially disordered and orderedNi3V
Samples of ${\mathrm{Ni}}_{3}$ V were prepared with two microstructures: (1) with equilibrium ${\mathrm{D}0}_{22}$ order, and (2) with partial disorder (having a large ${\mathrm{D}0}_{22}$ chemical order parameter, but without the tetragonality of the unit cell). For both materials, we measured the difference in their…
Comparative Study of XPS and DFT with Reference to the Distributions of Al in Tetrahedral and Octahedral Sheets of Phyllosilicates
Five phyllosilicate samples of dioctahedral smectite, mica, magnesium chlorite, saponite, and hectorite were studied using X-ray photoelectron spectroscopy (XPS) to determine the distribution of Al in the tetrahedral and octahedral sheets. The binding energies of the Al(2p) peaks in all the samples were obtained at 74…
Chemical Deposition of Ordered Conducting Polyaniline Film via Molecular Self-Assembly
Conducting polyaniline thin films were in situ deposited on silane-modified substrates through chemical polymerization. The resulting polymer films show good order and adhesion on the substrates. The thickness and conductivity of the resulting films can be tuned with the preparation conditions. The room temperature co…
Measuring Fiber Orientation in Nonwovens Part III: Fourier Transform
This paper addresses the development of an image analysis technique using the Fourier transform of the image to evaluate orientation in a fibrous assembly. The algorithms are evaluated using simulated images presented in Part I of the series. The results are compared with those for the tracking method presented in Par…
A Re-investigation of the Crystal Structure of the Perovskite PbZrO3 by X-ray and Neutron Diffraction
The crystal structure of the perovskite lead zirconate PbZrO 3 has been redetermined using single-crystal X-ray diffraction (Mo K α radiation, λ = 0.71069 Å). Single-crystal data at 100 K: space group. Pbam , a = 5.884 (1), b = 11.787 (3), c = 8.231 (2) Å, V = 570.85 Å 3 with Z = 8, μ = 612.6 cm −1 , D x = 8.06 Mg m −…
Advances in Texture Analysis from Diffraction Spectra
The orientation distribution of a textured polycrystal has been traditionally determined from a few individual pole figures of lattice planes hkl , measured by X-ray or neutron diffraction. A new method is demonstrated that uses the whole diffraction spectrum, rather than extracted peak intensities, by combining ODF c…
Polymer Aggregates with Crystalline Cores: The System Polyethylene−Poly(ethylenepropylene)
We have studied the aggregation behavior of polyethylene−poly(ethylenepropylene) (PE−PEP) diblock copolymers dissolved in decane. For this purpose PE−PEP diblock copolymers of various molecular weights, compositions, and degrees of deuteration were synthesized via an anionic route. The structure and morphology of the…
Use of Polyaniline and Its Derivatives in Corrosion Protection of Copper and Silver
This study examines the use of spin‐applied conjugated polymers such as polyanilines for corrosion and dissolution protection of silver and copper. In particular, attention is given to the protection that these polymers provide under conditions of an applied potential and at elevated temperature. These particular cond…
Photoreactivity of Polymers with Regioisomeric Cinnamate Side Chains and Their Ability To Regulate Liquid Crystal Alignment
Photoproduct distribution in films of cinnamate polymers was analyzed to reveal the contribution of both photoisomerization and photodimerization to LC alignment photoregulation. A polymethacrylate with o -cinnamate side chains displayed preferential formation of Z -isomer while the dimerization takes place more favor…
Aqueous Gold Sols of Rod-Shaped Particles
Aqueous dispersions of rodlike gold particles are obtained by electrodeposition in nanopores of anodized alumina attached to a conductive support followed by dissolution of the alumina and stabilization of the rods with poly(vinylpyrrolydon). The obtained sol of monodisperse gold rods is examined by electron microscop…
Electrochemical and In Situ Raman Spectroscopic Characterization of Nickel Hydroxide Electrodes: I. Pure Nickel Hydroxide
In situ laser Raman spectra of electrochemically precipitated thin‐film electrodes in alkaline NaOH electrolytes were recorded, and the effect of repeated charge‐discharge cycling on the structure and phase composition of the discharged and charged films was investigated. Careful deconvolution analyses of the Raman an…