Schierbaum K D, Weiss T, van Veizen E U, Engbersen J F, Reinhoudt D N, Göpel W
Science. 1994 Sep 2;265(5177):1413-5. doi: 10.1126/science.265.5177.1413.
It is shown by angle-resolved x-ray photoelectron spectroscopy that cavitands derived from resorcin[4]arenes provided with four dialkylsulfide chains form stable monolayers on gold surfaces that are well organized by self-assembly. The cavitand headgroups at the surface of the resorcin[4]arene monolayer act as molecular recognition sites for small organic molecules with remarkable selectivity for perchloroethylene (C(2)Cl(4)). Comparative thermal desorption experiments indicate binding sites with high interaction energies of C(2)Cl(4) at the surface of the resorcin[4]arene monolayers. Fast and reversible "host-guest" interactions were found by the monitoring of extremely small mass changes (in the nanogram range) with a quartz microbalance oscillator provided with gold electrodes coated by resorcin[4]arene monolayers.
角分辨X射线光电子能谱表明，由具有四条二烷基硫醚链的间苯二酚[4]芳烃衍生的穴状配体在金表面形成稳定的单分子层，该单分子层通过自组装得到良好的组织。间苯二酚[4]芳烃单分子层表面的穴状配体头基作为小分子有机化合物的分子识别位点，对全氯乙烯（C(2)Cl(4)）具有显著的选择性。对比热脱附实验表明，间苯二酚[4]芳烃单分子层表面存在与C(2)Cl(4)相互作用能高的结合位点。通过使用涂有间苯二酚[4]芳烃单分子层的金电极的石英微天平振荡器监测极小的质量变化（纳克范围），发现了快速且可逆的“主客体”相互作用。
