两亲性聚对苯乙撑的合成及其LB膜研究

Synthesisand LB Films structure of Amphiphilic Poly （p-- phenylenevinylene） Derivatives

本文通过wittig反应合成出了具有两亲性的聚对苯乙撑（PPV）类衍生物，通过核磁和红外对其进行了相关鉴定，并将其铺展上水面上，制得了稳定的单分子膜，并通过计算其单分子面积，研究了其分子在空气／水界面上的取向排列。在对多层LB膜的紫外光谱研究中发现，紫外吸光强度和层数成正比，说明该聚合物的单分子膜在转移过程中膜内分子的取向、构象及堆积方式没有随层数的增加而改变。

This paper successfully synthetized amphipathic PPV by wittig reaction. NMR and IR measurement were tested in our research and steady monolayers were obtained by spreading out the synthetized PPV on the air/water surface. Orientation of the polymer molecules on the water surface was studied though the area computation of monolayers. UV absorbance is in proportion to the number of layers according to the UV spectrum measurement of multi--layer LB films, which explain that orientation, conformation and accumulation of molecules among the polymer PPV LB films do not change with the rising of the number of layers during the diversion.