In:
ECS Meeting Abstracts, The Electrochemical Society, Vol. MA2020-02, No. 60 ( 2020-11-23), p. 3027-3027
Abstract:
Carbon materials such as graphene have been extensively studied for their application in electronic devices,electrocatalysis, and sensors. In contrast, polycyclic aromatic hydrocarbons (PAHs), the so-called nanographenes, are excellent materials for the creation of two-dimensional (2D) nanosheets. [1] The formation of adlayers on electrode surfaces is challenging because PAHs without peripheral substituents are used as 2D molecular templates and applications in conductance enhancement and organic field-effect transistors. [2] However, large PAHs tend to exhibit poor or no solubilities in organic solvents and water. To overcome this issue, in this study, we employed water-soluble micellar capsules consisting of V-shaped amphiphilic molecules. Characteristic electrochemical behaviors were observed in 0.1 M H 2 SO 4 in the presence of the water-soluble capsules containing PAHs such as dicoronylene. Furthermore, under these conditions, PAHs were released from the capsules, resulting in the formation of a 2D adlayer of PAHs at the electrochemical interface. Finally, using electrochemical scanning tunneling microscopy (EC-STM), we demonstrate that our molecular containers based on the water-soluble molecular capsules allow the facile preparation of 2D PAH adlayers in addition to structurally controlling nanostructure formation on Au surfaces.In particular, dicoronylene molecules formed a highly ordered adlayer with c (4 x 8√3) rect adlattice. [3] References: [1] J. Wu, W. Pisula, K. Müllen, Chem. Rev. 2007 , 107 , 718. [2] L. Zhang, Y. Cao, N. S. Colella, Y. Liang, J.-L. Brédas, K. N. Houk, A. L. Briseno, Acc. Chem. Res. 2015 , 48 , 500. [3] S. Origuchi, M. Kishimoto, M. Yoshizawa, S. Yoshimoto, Angew. Chem., Int. Ed. 2018 , 57 , 15481.
Type of Medium:
Online Resource
ISSN:
2151-2043
DOI:
10.1149/MA2020-02603027mtgabs
Language:
Unknown
Publisher:
The Electrochemical Society
Publication Date:
2020
detail.hit.zdb_id:
2438749-6
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