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Suzuki M, Guo Z, Tahara K, et al. Self-Assembled Dehydro[24]annulene Monolayers at the Liquid/Solid Interface: Toward On-Surface Synthesis of Tubular π-Conjugated Nanowires. Langmuir. 2016;32(22):5532-41doi: 10.1021/acs.langmuir.6b00744.
Suzuki, M., Guo, Z., Tahara, K., Kotyk, J. F., Nguyen, H., Gotoda, J., Iritani, K., Rubin, Y., & Tobe, Y. (2016). Self-Assembled Dehydro[24]annulene Monolayers at the Liquid/Solid Interface: Toward On-Surface Synthesis of Tubular π-Conjugated Nanowires. Langmuir : the ACS journal of surfaces and colloids, 32(22), 5532-41. https://doi.org/10.1021/acs.langmuir.6b00744
Suzuki, Mitsuharu, et al. "Self-Assembled Dehydro[24]annulene Monolayers at the Liquid/Solid Interface: Toward On-Surface Synthesis of Tubular π-Conjugated Nanowires." Langmuir : the ACS journal of surfaces and colloids vol. 32,22 (2016): 5532-41. doi: https://doi.org/10.1021/acs.langmuir.6b00744
Suzuki M, Guo Z, Tahara K, Kotyk JF, Nguyen H, Gotoda J, Iritani K, Rubin Y, Tobe Y. Self-Assembled Dehydro[24]annulene Monolayers at the Liquid/Solid Interface: Toward On-Surface Synthesis of Tubular π-Conjugated Nanowires. Langmuir. 2016 Jun 07;32(22):5532-41. doi: 10.1021/acs.langmuir.6b00744. Epub 2016 May 26. PMID: 27183003.
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Langmuir. 2016 Jun 07;32(22):5532-41. doi: 10.1021/acs.langmuir.6b00744. Epub 2016 May 26.

Self-Assembled Dehydro[24]annulene Monolayers at the Liquid/Solid Interface: Toward On-Surface Synthesis of Tubular π-Conjugated Nanowires.

Langmuir : the ACS journal of surfaces and colloids

Mitsuharu Suzuki, Zhaoqi Guo, Kazukuni Tahara, Juliet F Khosrowabadi Kotyk, Huan Nguyen, Jun Gotoda, Kohei Iritani, Yves Rubin, Yoshito Tobe

Affiliations

  1. Department of Chemistry and Biochemistry, University of California, Los Angeles , Los Angeles, California 90095-1569, United States.
  2. Division of Frontier Materials Science, Graduate School of Engineering Science, Osaka University , Toyonaka, Osaka 560-8531, Japan.
  3. Department of Applied Chemistry, School of Science and Technology, Meiji University , 1-1-1 Higashimita, Tama-ku, Kawasaki 214-8571, Japan.

PMID: 27183003 DOI: 10.1021/acs.langmuir.6b00744

Abstract

We have studied the self-assembly behavior of dehydro[24]annulene (D24A) derivatives 1, 2a-2d, and 3a-3c at the liquid/solid interface using scanning tunneling microscopy (STM). Both the relative placement and the nature of the four D24A substituents strongly influence the self-assembly pattern. Overall, the eight D24A derivatives examined in this study display seven types of 2D packing patterns. The D24A derivatives 1, 2a, and 3a have either two or four stearate groups and adopt face-on configurations of their macrocyclic cores with respect to the highly oriented pyrolytic graphite (HOPG) surface. Their 2D packing pattern is determined by the interchain spacings and number of stearate substituents. The D24A derivatives 2b-2d and 3b-3c bear hydrogen-bonding carbamate groups to further strengthen intermolecular interactions. Face-on patterns were also observed for most of these compounds, while an unstable edge-on self-assembly was observed in the case of 2b at room temperature. Stable edge-on self-assemblies of D24A derivatives were sought for this work as an important stepping stone to achieving the on-surface topochemical polymerization of these carbon-rich macrocycles into tubular π-conjugated nanowires. The overall factors determining the 2D packing patterns of D24As at the liquid/solid interface are discussed on the basis of theoretical simulations, providing useful guidelines for controlling the self-assembly pattern of future D24A macrocycles.

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