Poly (dibenzazepine) (PAzep) was synthesized by Ni-promoted dehalogenative polycondensation of corresponding dibromide BrAzep, and the properties of PAzep were investigated. The bridging unit of diphemylamine unit of PAzep and substituent on the N atom influenced the optical properties. Polymerization method also changed optical properties of PAzep. Cyclic voltammogram of PAzep cast film was independent from cast solvent whereas cast solvent of poly (phenazasiline) (PPhenaz) changed electrochemical properties. PAzep was useful as fluorescent additive for resin.
Nanocomposites of magnetic materials and gold nanostructure that exhibit localized surface plasmon resonance are studied to apply to nanomedicine devices with both magnetic and optical functions. Gold nanostructures, such as nanoshells and nanoparticle-assemblies, are synthesized on magnetic particles via electroless plating to develop a heating source for photothermal therapy and a sensing label for magneto-optical diagnosis. Synthesis conditions of the gold nanostructures are investigated to tune their optical properties, which depend on their morphological features. Their optical absorption peak is shifted to a longer wavelength region by changing the morphology from nanoparticle-assembly to nanoshell structure.
Mono-Tsukuri (manufacturing) is significantly moving towards miniaturization, therefore advanced technologies in thin film and surface finishing are frequently needed. Evaluation technologies for this advanced technology consist of material analysis and mechanical properties but lack high resolution. The authors have achieved nanosized resolution from a newly developed MSE test method that visualizes binary mechanical properties such as hard but brittle and delegated distribution of surface to interior. In this paper, the details of the evaluation test method and multi-layer coating such as painting are discussed.
As global warming issues become more serious, we are working to reduce the emission of carbon dioxide, which is a greenhouse gas, in all countries around the world. Carbon dioxide emitted from transportation equipment is also subject to regulation, and in particular, each country decides the strict carbon dioxide emissions regulation value for automobiles, and is working on improving fuel consumption. In order to improve fuel consumption, weight reduction of the vehicle body is effective along with the performance improvement of the power train, and the use of ultra-high tensile strength steel and carbon fiber reinforced plastic etc. are effective for weight reduction of the vehicle body. In this paper, we describe the prospects for lightweight materials required for lightweight automobile bodies from the forecast of carbon dioxide emissions regulations in the future.