A new type of self-assembled film was prepared by alternating deposition of oppositely charged meso-tetra-(4-trimethylaminophenyl) porphyrin nickel iodide (NiTAPPI) and citrate-stabilized CdSe nanoparticles. The stepwise deposition process was monitored by means of UV-vis spectroscopy. The interaction between the porphyrin and CdSe nanoparticles was characterized with UV-vis and fluorescence spectra. The SEM images showed the formation of densely packed two-dimensional array and the conversion of disorder-to-order of CdSe nanoparticles on the quartz substrate modified by PDDA when depositing positively charged NiTAPPI. The self-assembled film placed in ambient air exhibited significant enhancement of fluorescence intensity. The effects of heat treatment and UV-light irradiating on fluorescence properties of the composite films were investigated in details.

In this paper, Langmuir-Blodgett films of hematoporphyrin mixed with stcaric acid have been investigated. It was found that hematoporphyrin molecules were inlaid in monolayers of stearic acid. The UV-vis spectra of the LB films showed that there wasn't strong interaction between ematoporphyrin molecules when compared with the solution spectrum. The particular orientation of hematoporphyrin macrocycle in LB f'dm was con-firmed by polarized' UV-vis spectra.

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。

酞菁比合物是具有高稳定性的大键共轭体系。目前，酞菁LB膜研究大多采用单体小分子，其气敏特性已有报道。小分子LB膜机械强度及膜结构稳定性差、器件寿命短，无法达到实用阶段，而聚合物LB膜可以提高膜的机械强度，改善膜的性能。酞菁聚硅氧烷是具有优良氧比还原性质和光学性质的新型LB膜材料，膜分子堆集密度高，缺陷少，热和机械稳定性高，Vogel等，将其用作场效应晶体管的栅极膜材料，制作了性能优良的离子传感器。

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.