混合单分子膜中二维微晶畴的制备及表征

PREPARATION AND CHARACTERIZATION OF TWO-DIMENSIONAL DOMAINS IN THE MIXED MONOLAYER FILMS

利用混合ＬＢ技术，在脂肪酸与５，１０，１５－三苯基－２０－（４－ｄｌ－α－苯丙氨酰氨基）苯基卟啉（简称ＴＰＰＰ）混合单分子膜内制备了二维微晶畴结构．原子力显微术观测表明；对于长链脂肪酸的情况；膜中形成了处于液态凝聚相的脂肪酸的微晶畴结构；而在短链脂肪酸的情况下，膜中出现的则是处于液态扩张相的ＴＰＰＰ的微晶畴结构．简要讨论了这一结构的实际应用．

Two-dimensional domain structures were prepared in the mixed monolayer films composed of fatty acid and 5, 10, 15-triphenyl -20-(4-dl-α-phenylalanylamindo) phenyl porphyrin(TPPP) by the mixed Langmuir-Blodgett technique. Through atomic force microscopy studies, we observed the fatty acid domains in the liquid-condensed phase for the conditions of long alkyl chain. By shortening the length of the hydrocarbon chain, TPPP domains in the liquidexpanded phase were observed. A brief discussion about the practical usage of this kind of struetures was presented in this paper.