Controlling molecular assembly in two dimensions:: The concentration dependence of thermally induced 2D aggregation of molecules on a metal surface

(Figure Presented) Dilution principle in two dimensions: One building block yields three forms of aggregation on variation of the surface concentration of the molecular precursor (see picture; ML = monolayer coverage). Upon annealing at 300°C, highly robust 2D aggregates are obtained on metal surfaces which lend themselves to the construction of hierarchic systems of higher complexity. © 2005 Wiley-VCH Verlag GmbH & Co. KGaA.