Supramolecular nanowire

Because each molecule can be designed to show different functionalities, it should be attractive to assemble those molecules into nano-structured devices with integrated operation. We are especially focusing on a development of supramolecular nanowires that allow 3D periodic wiring in nano-scale. By encapsulating a 1D array of conducting molecules in a channel formed inside 3D supramolecular network, it is possible to construct a sheathed nanowires aligned in a periodic order. Below are some videos explaining the formation of supramolecular nanowire structures.

1. Formation of halogen bonding by tetraiodoethylene.


 

2. Formation of supramolecular nanowire. Yellow EDT-TTFs are in cation radical states and electrically conducting, while the other parts (blue, red, and green) are insulating.


 

3. Cross-bar channel configuration created by an insulating supramolecular assembly.

 

  1. H. M. Yamamoto, Y. Kosaka, R. Maeda, J. Yamaura, A. Nakao, T. Nakamura, and R. Kato, “Supramolecular Insulating Networks Sheathing Conducting Nanowires Based on Organic Radical Cations” ACS Nano, 2(1), 143-155 (2008).　
  2. J. Lieffrig, H. M. Yamamoto, T. Kusamoto, H. Cui, O. Jeannin, M. Fourmigué, and R. Kato, "Halogen-Bonded, Eight-fold PtS-Type Interpenetrated Supramolecular Network. A Study toward Redundant and Cross-Bar Supramolecular Nanowire Crystal" Cryst. Growth Des., 11, 4267–4271 (2011).