Bond activation and coupling reactions on anisotropic surfaces

摘要

A method for activating covalent bonds (including alkyl C H bond) and coupling reactions at specific sites of the reactant molecules by surface con­straint. In said method an anisotropic surface with a one-dimensional constraint is used as the platform and catalyst for the reactions. The reactions include dimerization and. polymerization, depending on the structure of the respective molecules. The surface may be gold {110}, platinum{110}, iridium {110}, or iron {211}, or alloys thereof, but is preferably gold {110}. More preferably, the gold {110} surface has a missing-row construction induced by organic molecules, most preferably having a 1x2 and 1x3 reconstruction. Preferred reactant molecules include alyl-containing molecules, more preferably alaknes, most preferably dotriacontane, di(eicosanyl)benzene (DEB), eicosanylbenzene (EB), 1-(octadecyl)thymine and/or 9-(dodecyl)adenine. The activation and coupling reactions are preferably performed at temperatures up to 300 degrees Celsius.