Conjugated compounds have been a central component for molecular electronics and recently have emerged as one of the important subjects in supramolecular science because of their utility in fabrication of various low dimensional structures such as rods, fibers, wires, tubes, tapes, and sheets. From the viewpoint of integrating other functionalities to π -systems, salophen (Scheme 1a; 1), one typical Schiff base, is a good candidate due to its capability to ligate with almost all transition metal ions to give planar complexes, which have been well–explored as catalysts, spin–transition components, and nonlinear optical materials. Despite promising application in various fields, little is known about their aggregation behavior via self- assembly. In this sense, it is yet a challenge to develop a molecular platform suitable for metallo–salophen complex to self-assemble into well-organized metallo–arrays.
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