Supramolecular Linear Heterojunction Composed of Graphite-Like Semiconducting Nanotubular Segments.

Wei Zhang, Wusong Jin, Takanori Fukushima, Akinori Saeki, Shu Seki, and Takuzo Aida

Science 2011, 334, 340–343.
[DOI: 10.1126/science.1210369]

Splicing Self-Assembled Nanotubes Composed of Graphite-Like Molecules
  One-dimensionally connected organic nanostructures with dissimilar semiconducting properties are expected to provide a reliable platform in understanding the behaviors of photocarriers, which are important for the development of efficient photon-to-electrical energy conversion systems. We reported a semiconducting nanoscale organic heterojunction, demonstrated by stepwise nanotubular coassembly of two strategically designed molecular graphenes. The dissimilar nanotubular segments, thus connected noncovalently, were electronically communicable with one another over the heterojunction interface and displayed characteristic excitation energy transfer and charge transport properties not present in a mixture of the corresponding homotropically assembled nanotubes.

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