四硫富瓦烯衍生物的合成及其成膜性

Synthesis of Tetrathiafulvalene Derivatives and Their LB Films

合成出三种新的四烷硫基取代的四硫富瓦烯衍生物，并用红外光谱、核磁共振谱、元素分析和质谱进行了表征，考察它们的成膜能力。结果表明这三种化合物的氯仿均可在亚相（水）上拉制出具有较好性质的ＬＢ膜，其成膜能力与烷基的碳链长度和亚相中甘酸的浓度有直接的关系。

Three new tetrathiafulvalenes substituted by tetraalkylthio, 3a, 3b, and 3c were synthe-sized and characterized by IR, 1H NMR, MS and elemental analysis. Surface pressure (π area (A) ) isotherms for the three kinds of compounds in chloroform solution in subphase(wa-ter) at 22 ℃ showed the high power of forming unimolecular layer film, which was directly related to the length of alkyl chains and appropriate amount of eicosanoic acid added into the subphase.