Publication in Nature Communications

Tessellation of the Euclidean plane into regular polygons – tiles – is a mathematical concept for description of intricate geometries associated with complex structures potentially displaying unique properties. Employing combination of experimental methods (LEEM, STM, XPS), we have revealed that a directed chemical transformation of a 4,4’-biphenyl-dicarboxylic acid on a silver substrate results in a mixture of intact, partially, and fully chemically transformed molecules. At certain composition of the system the molecules self-assemble into structures that can be associated with 2- and 3-uniform tilings.