Catalytic allylation of aryl halides with allyltributyltin in the presence of tetrakis(triphenylphosphine)palladium(O) was investigated. The reaction with aryl bromides proceeded efficiently to yield allylbenzenes.

A variety of fluoroalkyl end-capped oligomers/silver nanocomposites were prepared by the reactions of silver ions with poly(methylhydrosiloxane) in the presence of fluoroalkyl end-capped N,N-dimethylacrylamide oligomer, N-(1,1-dimethyl-3-oxobutyl)acrylamide oligomer, N,N-dimethylacrylamide cooligomer containing poly(dimethylsiloxane) segments in organic media such as toluene and 1,2dichloroethane. These fluorinated oligomers/silver nanocomposites thus obtained were found to exhibit clear plasmon absorption bands around 420 nm related to the formation of silver nanoparticles. In particular, these composites could display narrow plasmon absorptions around 420 nm in toluene by the addition of trioctylamine (TOA). On the other hand, the corresponding non-fluorinated N-(1,1dimethyl-3-oxobutyl)acrylamide oligomer was not able to afford such a plasmon absorption under similar conditions. These fluorinated oligomers/silver nanocomposites in organic media have been found to be stable for more than 10 days. Transmission electron microscopy (TEM) and dynamic light scattering (DLS) measurements showed that silver nanoparticles could be effectively encapsulated into fluorinated oligomeric aggregate cores to afford colloidal stable fluorinated oligomers/silver nanocomposites. Fluorinated oligomers/silver nanocomposites were also applied to the surface modification of traditional organic polymers such as polystyrene (PSt) and poly(methyl methacrylate) (PMMA) to exhibit not only a good oleophobicity imparted by fluorine but also a higher surface antibacterial activity related to the silver nanoparticles on their surface.

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The properties of PbCa(Cu, Nb)TiO3–NiSnO3 based pyroelectric ceramics were investigated. Microstructures were examined by a X-ray microanalysis. The pyroelectric ceramics were consisted of three individual of PbCa(Cu, Nb)TiO3 phase NiSnO3–NiTiO3 compound phase and SnO2 rich phase in a ceramic composition. Pyroelectric properties of the ceramics were F v of 8.5×10-11 C cm/J and Curie point of 272°. By an addition of NiSnO3 to Pb0.7Ca0.3(Cu1/3Nb2/3)0.05Ti0.95O3, F v were up to the high value with an increase of P(P=5.8×10-8 C/cm2°C) and a decrease of ε s (ε s =220).

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