Interaction of Organonitriles with Electron Rich Calix[4]arene Derivatives on Gold Substrates

We synthesized 25,26,27,28-tetrakis(mercaptobuthoxy)-5,11,17,23-[2,2′-thioxy(o-phenylene)thioxy-piperidino]calix[4]arene [1], 25,26,27,28-tetrakis(mercaptobuthoxy)-5,11,17,23-[2,2′-thioxy(o-phenylene)thioxy-amino]calix[4]arene [2] and 25,26,27,28-tetrakis(mercaptobuthoxy)-5,11,17,23-[2,2′-thioxy(o-phenylene)thioxy-aminopyrene] calix[4]arene [3] containing four alkyl thiol linkages, which allow the calix[4]arene to attach on the gold surface. We observed the binding of calix[4]arene derivatives and aromatic molecules with surface plasmon resonance and confirmed complexation of aromatic nitriles on calix[4]arene derivatives with FT-IR peak.