A two-dimensional molecular network structure of trimesic acid prepared by adsorption-induced self-organizationElectronic supplementary information (ESI) available: materials and methods. See http://www.rsc.org/suppdata/cc/b2/b207556c/

A two-dimensional molecular network of trimesic acid on Au(111) was visualized by in situ scanning tunneling microscopy with submolecular resolution. The supramolecular structures including an 'order to order' phase transition were constructed by precise potential-controlled adsorption based on adsorption-induced self-organization.