The performance of organic electronic devices is profoundly influenced by the nanoscale morphology of the organic film. For example, the active layer of a bulk heterojunction organic photovoltaic (BHJ OPV) device is a ~100 nm thick film consisting of a blend of an electron donating and electron accepting material that phase segregates to form nanoscale, bicontinuous domains. The size, purity, order, and distribution of these nanoscale domains all affect each of the processes that govern solar cell efficiency. Therefore, having control over nanoscale morphology is of great importance.