Abstract
Although single-molecule electronic devices have been of great interest for several decades, the fabrication of practical circuits remains challenging due to the lack of reliable ways to wire individual molecules. On-surface synthesis of single conductive polymer chains will be a key technology to solve this problem. We already found that stimulating a molecular layer of diacetylene compound by the tip of scanning tunneling microscope (STM) could initiate chain polymerization. As a result, we could systematically fabricate a single conjugated polydiacetylene chain at designated positions. Subsequently, we developed a novel method (‘chemical soldering’) for connecting the conjugated polymer chains to single organic molecules. The connection of two polydiacetylene chains to a single phthalocyanine molecule was demonstrated. Nanoscale characteristics of the connection were also experimentally and theoretically investigated. Here, we briefly review tip-induced chain polymerization and the chemical soldering methods. This work will help to advance single-molecule electronics.
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Acknowledgments
We are grateful to our collaborators, Prof. J.K. Gimzewski (UCLA), Prof. C. Joachim (CNRS), Prof. S. Goedecker (Univ. of Basel), Prof. T. Hasegawa (Waseda Univ.), Dr. C. Hu (Tokyo Univ. of Science), Dr. S. Tsukamoto (Forschungszentrum Jülich and JARA), Dr. D. Takajo (Osaka Univ.), Prof. M. Nakaya (Nagoya Univ.), Dr. Y. Tateyama, Dr. J.P. Hill, Dr. K. Ariga, Dr. T. Taniguchi, and Dr. T. Nakayama (NIMS). This work was supported by World Premier International Research Center Initiative (WPI), the Ministry of Education, Culture, Sports, Science and Technology of Japan (MEXT), and partially supported by JSPS KAKENHI Grant Numbers 21310078 and 24241047.
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Okawa, Y., Mandal, S.K., Makarova, M., Verveniotis, E., Aono, M. (2016). On-Surface Synthesis of Single Conjugated Polymer Chains for Single-Molecule Devices. In: Gourdon, A. (eds) On-Surface Synthesis. Advances in Atom and Single Molecule Machines. Springer, Cham. https://doi.org/10.1007/978-3-319-26600-8_8
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DOI: https://doi.org/10.1007/978-3-319-26600-8_8
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