【摘要】 利用Langmuir-Blodgett(LB)膜技术能够使薄膜中聚合物分子链获得高度有序的排列与组装,并使沉积后的膜具备可控的特殊结构以及不同寻常的物理化学性质。高分子LB膜可用于制造非线性光学材料、光电子器件、传感器单元、电极修饰膜,也可作为研究催化反应、电子转移、仿生模拟的理想模型。本文评述了芳杂环类合成高分子(聚酰亚胺、聚噻吩、聚乙烯基咔唑和聚苯胺)与几种天然高分子(木质素、纤维素、壳聚糖和蛋白质)的LB膜最近的研究进展,并详细讨论了高分子LB膜的制备、结构与表征,指出了这两类高分子LB膜的研究重点,并对该两类高分子LB膜潜在的应用进行了展望。更多还原

【Abstract】 The highly-ordered arrangement and assembly for polymer molecular chains in a thin film is achieved by Langmuir-Blodgett (LB) technique,which gives the special controlled structure and the unusual physiochemical properties to the deposited films. Polymeric LB films could be used to fabricate nonlinear optical materials,optoelectronic devices,sensor elements,modified electrode films,as well as the idea models for research on catalytic reaction,electron transfer,and biomimetic mechanism. This review article gives the recent development in LB films made from aromatic heterocyclic polymers (polyimide,polythiophene,polyvinyl carbazol and polyaniline) and natural polymers (lignin,cellulose,chitosan and protein). It discusses the preparation methods,structures and characteristics of polymeric LB films in detail. Especially,the hot-point of the current research was emphasized and the potential applications were prospected for such above-mentioned two kinds of polymeric LB films.更多还原