To provide a simple method which accomplishes patterning of a micron order and uniaxial orientation of a one dimensional conjugated oligomer simultaneously and a molecular oriented conjugated oligomer.

The method accomplishes patterning of a micron order and uniaxial orientation of a one dimensional conjugated oligomer simultaneously and comprises adding at least a surface active agent to the solution of an oligomer molecule having a π-conjugated system developed in the direction of the longitudinal axis of the molecule and impressing a magnetic field on the solution.