Toward Regular Arrays of Dipolar Molecular Rotors Josef Michl Department of Chemistry and Biochemistry University of Colorado, Boulder, CO, U.S.A. and Institute of Organic Chemistry and Biochemistry, ASCR, Prague Regular arrays of artificial dipolar molecular rotors attached to a surface or contained in a thin layer are of interest for applications in nanoelectronics. Two approaches to such two-dimensional materials will be described. In one, the rotors are present as guests on the surface of a host material that contains suitably arranged channels. In the other, the rotors are mounted at the lattice points of a synthetic two-dimensional grid prepared on the surface of a liquid.