New synthetic methods of π-conjugated inclusion complexes with high conductivity
A new method for the synthesis of an insulated π-conjugated molecule was developed via the sequential self-inclusion of π-conjugated guest branched permethylated α-cyclodextrin followed by the elongation of the π-conjugated unit. Covering a single π-conjugated wire by an α-cyclodextrin derivatives can suppress conductance fluctuation. The insulated π-conjugated molecules were utilized in the synthesis of highly conductive zigzag- and functionalized-insulated molecular wires.
Keywordsπ-Conjugated molecular wire Molecular electronics Functionalized molecular wire Cyclodextrin Poly(phenylene ethynylene) Rotaxane Rotaxane Polyrotaxane
Author expresses special thanks for all of co-workers for their great contributions and the organizing committee of Host–Guest and Supramolecular Chemistry Society, Japan for giving him the HGCS Japan Award of Excellence 2013 and the opportunity to write this article. The author is grateful to Professors Manabu Kiguchi (Tokyo Institute of Technology), Tomofumi Tada (Tokyo Institute of Technology), and Shu Seki (Osaka University) for their valuable suggestions and discussions. The author also thanks all of the collaborators. Financial support from the Funding Program for Next Generation World-Leading Researchers and the PRESTO program of the Japan Science and Technology Agency. This is a paper selected for the ‘‘HGCS Japan Award of Excellence 2013’’.
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