Disclosed are a compound which works as electronic materials such as a molecular memory, a molecular switch, a molecular rectifier, a molecular wire, and so on, and a molecular electronic device including the same. The compound for molecular electronic device has the structure of following Formula 1, (MnRM)n   wherein, R is a single molecule having an electrical conductivity, M is independently a repeating unit constituting a polymer having an electrical conductivity, and n is independently an integer ranging from 100 to 500.