We report on the synthesis, optical- and electrochemical properties of two new cross-linkable conjugated small molecules (1 and 2 in Scheme 1). The new materials are composed of a –conjugated core substituted with two solubilizing chains containing oxetane end-groups as cross-linkable moieties. Oxetane groups polymerize via a cationic ring opening mechanism (CROM), yielding characteristically an insoluble and highly reticulated polymeric network. Thus, morphologically stable phases may be achieved from taking advantage of the cross-linking ability of oxetane groups. In this communication, we also present results on organic photovoltaic cells utilizing the novel materials as electron-donors and implementing different conditions of cross-linking.