The ZnO ultrathin films were fabricated from annealing the ZnS nanoparticulate films. By the layer by layer self-assembly technique, we constructed the ZnS nanoparticulate films from alternating layers of ZnS nanoparticles and polydiallyldimethylammonium chloride (PDDA). The result of the emission spectra indicated that PDDA played a role of passivator. Annealing the ZnS/PDDA films at different temperatures led to the changes in absorption. The SEM images showed that the preannealed film was composed of the uniformly distributing domains, while on the annealed film, there exist some holes formed by the burning of the organic components. The EDS confirmed that ZnS could be converted to ZnO at 500℃

卟啉类化合物具有良好的电子转移和能量传递的功能 [1]，是很好的光敏剂和氧化还原剂 [2] 血卟啉及其衍生物在恶性肿瘤临床诊断及治疗中已得到应用 [3]，文献 [4] 曾研究了6种无脂链卟啉在花生酸单分子膜中的镶嵌行为，其结果是卟啉被挤出花生酸单分子层成团聚集。并用sEM直接观察到混合膜的相分离现象。本文是这一工作的继续、血卟啉分子自身在液一气界面上有一定的成膜能力，但稳定性较差，难于在固体基片上沉积、将血卟啉与硬脂酸混 合时，两者在单分子膜内有较好的相容性，易于沉积在固体基片上。

The silica-coated ZnS nanocomposites have been synthesized by a seeded-growth procedure in iso-propanol. The results of XRD, HRTEM and UV absorption show that the ZnS nanoparticles can be incorporated in the silica nanospheres without changing the particle size, and the composites are of multi-core structure. UV absorption and emission spectra have been performed to check the character of the composites, which show that the silica shell not only increases the PL intensity, but also greatly improves the anti-oxidation ability and thermal stability.

CdS nanoparticles were successfully synthesized through a simple and "green" route using starch as a capping agent. The nanoparticles were characterized by means of AFM, X-ray diffraction (XRD), UV-vis absorption and photoluminescence spectroscopy. The X-ray diffraction analysis suggested that the CdS nanoparticles were of the cubic structure. The AFM gave an average particle size of approximately 10nm.

The Langmuir film behavior of fluorine-containing side chain liquid crystal copolysiloxanes at the air-water interface has been studied over a temperature range of 277.5-310K. The surface pressure-area isotherms exhibited a transition from an expanded to a condensed phase. In the expanded phases the main chains of the polymers were anchored at the air-water interface. In the condensed phases the extension or partial exclusion of the main chains at the air-water interface was mainly controlled by the cross-sectional area of the side chain. The transferred Langmuir-Blodgett LB multilayer did not give any X-ray diffraction peak. With heating, a molecular ordering of the LB film was induced so that the film showed the Bragg diffraction peak.