Development of Organic π-Conjugated Systems for the Study of Linked Molecules in Nano-Scale

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Throughout this research project, we have aimed at the following two subjects : (1) design and synthesis of novel π-conjugated skeletons which enable the systematic studies of the electron-transporting properties of linked molecules in nano-scale, and (2) development of a new anchoring group for an efficient electronic contact through a molecule-electrode junction. We succeeded in the synthesis of various new π-conjugated molecules including ladder-type oligo(p-phenylenevinylene)s and fused oligothiophenes, and investigated their structural features and properties. We also studied their electron-transporting properties of their single-molecule junctions as well as their single crystals.