synopsisThe pyridine derivatives were combined to poiy(styrene) beads with spacer groups or a graft chain.These spacer-type and graft-type pyridine beads formed their Cu complexes with high rates and large stability constants; they act as an effective chelating resin. The pyridine residues were more mobile due to the spacer group and the graft chain, compared with the poly(4-vinylpyridine) powder.

We present a new type of aperture antenna with V-groove structures that are made of Au to enhance strong circularly polarized light (CPL). Simulations using the finite element method revealed that strong CPL was enhanced within the aperture with a diameter of 10 nm. The intensity of the electric field was enhanced and was 22,700 times greater than that of the incident light. The channel plasmon polaritons generated in the V-groove structures were responsible for the strong enhancement. The influence of the angle and length of the V-groove on the enhancement of the CPL was investigated.

In discharge denitrification, radical production by electron collision with combustion gas is a key process which determines the denitrification process and its performance. In this study N, O, OH and H radical densities have been measured by appearance mass spectrometry in a low-pressure discharge field with parallel electrodes (2 cm gap) under simulated combustion gas flow. Also, electric field, electron number density and electron temperature at the radical sampling position have been measured by the Langmuir probe method. Under constant discharge pressure the radical density (cm −3 ) was about 10 11 -10 12 cm −3 , and the density increased with increasing the discharge current. Under constant discharge current, both the radical concentration [−] and electron temperature increased with decreasing pressure. The radical concentration in the cathode fall region was greater than that for the outer region. Additionally, we measured the concentration change of NO mixed in the simulated combustion gas and observed a little change of the NO concentration.

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The surface chemical properties of cuprous-iodide (CuI) film evaporated on a polymer layer containing a precursor reducing agent, 2-isopropoxy-1,4-naphthoquinone (IPNQ), were markedly affected by UV irradiation. The CuI was reduced by photoproducts of the IPNQ and the surface reductants attracted the zinc vapor in a vacuum evaporation vessel. Thus the UV exposure resulted in the zinc vapor deposition.