界面超分子手性因其在材料、催化、生物等领域的应用前景得到了人们的广泛关注。卟啉（porphyrin）衍生物因具有强的ππ堆垛能力、生物兼容性和出色的电子性能,常用于构建界面超分子结构。卟啉衍生物的表面超分子手性研究多数在固体基底上进行。利用二次谐波线二色谱方法分析卟啉衍生物在空气/水界面形成的超分子结构,通过界面层不同位置处产生的S偏振二次谐波强度随入射基频光偏振态的变化研究界面超分子结构的手性分布。实验表明,卟啉衍生物TPPS吸附在两亲分子CTAB在空气/水界面上形成的单层后会形成超分子结构,该结构具有手性,且手性的二维分布是非均匀的。

Second harmonic generationlinear dichroism (SHGLD) is used to investigate the twodimensional distributions of interfacial supramolecular chirality formed by achiral molecules at air/water interface. The sample measured is a complex monolayer formed by CTAB and TPPS. The Spolarized SHG intensities are measured as a function of the incident fundamental wave polarization angles. Data fitting and comparative analysis of experimental data indicate that the supramolecular chirality of complex monolayer is already present at the air/water interface before transferred on the solid substrate and the twodimensional distributions of interfacial supramolecular chirality are inhomogenous.