Supramolecular chemistry at the liquid/solid interface : a scanning tunneling microscopy approach

With scanning tunneling microscopy (STM), the intramol. conformational and intermol. ordering aspects have been investigated of a variety of org. mols. physisorbed at the liq.-solid interface. By balancing the interplay between intramol. and intermol. interactions (hydrogen bonding), leading to control of the mol. conformation, foldamers were created which order into well-defined two-dimensional crystals. The nature of the hydrogen bonding groups in conjugated oligomers leads to the formation of infinite stacks and cyclic multimers, expressing the chiral nature of the mols