self aggregation
1.The collapse behavior of nano-particle SiO 2(R972)is investigated in a 35 mm diameter fluidized bed. This powder can be easily and uniformly fluidized via self-aggregation.
2.Photo - to - electric conversion of a nanostructured TiO2 electrode cosensitized with dye pairs of ZnTSPP - H2TSPP and ZnTSPP - GaTSPc was investigated. Doping of ZnTSPP reduces self -aggregation of H2TSPP and GaTSPc in the surface of the electrode. Cosensitization markedly enhances the photoelectric response of Q band and in the meantime greatly decreases that of Soret band under monochromatic illumination.
3.Results indicate chitosan is able to self-aggregate and the aggregation could be obviously accelerated by the presence of sodium dodecylsulfate(SDS) in 0.1 mol/L acetic acid solution. The fluorescence emission of DPH was enhanced remarkably as the concentration of chitosan was 1.0 g/L.

