Seamless growth of a supramolecular carpet

Ju-Hyung Kim, Jean-Charles Ribierre, Yu Seok Yang, Chihaya Adachi, Maki Kawai, Jaehoon Jung (), Takanori Fukushima () and Yousoo Kim ()
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Ju-Hyung Kim: Surface and Interface Science Laboratory
Jean-Charles Ribierre: Center for Organic Photonics and Electronics Research (OPERA), Kyushu University
Yu Seok Yang: Center for Organic Photonics and Electronics Research (OPERA), Kyushu University
Chihaya Adachi: Center for Organic Photonics and Electronics Research (OPERA), Kyushu University
Maki Kawai: The University of Tokyo
Jaehoon Jung: Surface and Interface Science Laboratory
Takanori Fukushima: Chemical Resources Laboratory, Tokyo Institute of Technology
Yousoo Kim: Surface and Interface Science Laboratory

Nature Communications, 2016, vol. 7, issue 1, 1-9

Abstract: Abstract Organic/metal interfaces play crucial roles in the formation of intermolecular networks on metal surfaces and the performance of organic devices. Although their purity and uniformity have profound effects on the operation of organic devices, the formation of organic thin films with high interfacial uniformity on metal surfaces has suffered from the intrinsic limitation of molecular ordering imposed by irregular surface structures. Here we demonstrate a supramolecular carpet with widely uniform interfacial structure and high adaptability on a metal surface via a one-step process. The high uniformity is achieved with well-balanced interfacial interactions and site-specific molecular rearrangements, even on a pre-annealed amorphous gold surface. Co-existing electronic structures show selective availability corresponding to the energy region and the local position of the system. These findings provide not only a deeper insight into organic thin films with high structural integrity, but also a new way to tailor interfacial geometric and electronic structures.

Date: 2016
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DOI: 10.1038/ncomms10653

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