Research
Creation of Coordination Nanosheet
π-Conjugated Bis(dithiolene)metal Complex Nanosheet
Monolayer nanosheet materials have attracted significant attention because of their unique physical and chemical properties, which derive from their two-dimensional (2D) nature. Graphene is one of the most prominent nanosheet materials because of its various attractive properties, including high carrier mobilities. Although most of the nanosheets have been synthesized via exfoliation of bulk layered materials, which is a top-down method, we are researching nanosheet materials synthesized through coordination reaction between metal ions and ligands, which is a bottom-up method. The advantage of bottom-up approaches is that the composition, structure, and various properties can be tuned at will by tailoring the utilized metal ions and ligands.
Based on our previous research for π-conjugated multi-nuclear metalladithiolene complexes, we synthesized “π-conjugated metal bis(dithiolene) complex nanosheets”. We used the gas-liquid interface coordination reaction to synthesize the nanosheets. Delocalized π electron system of the metal bis(dithiolene) complex nanosheet caused semiconductivity. Reversible redox activity derived from metal bis(dithiolene) complex site was preserved, and the control of semiconducting characters by changing the valence state was achieved.
T. Kambe, R. Sakamoto, K. Hoshiko, K. Takada, M. Miyachi, J.-H. Ryu, S. Sasaki, J. Kim, K. Nakazato, M. Takata, H. Nishihara J. Am. Chem. Soc. 2013, 135, 2462-2465. →link
