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Monomolecular covalent honeycomb nanosheets produced by surface-mediated polycondensation between 1,3,5-triamino benzene and benzene-1,3,5-tricarbox aldehyde on Au(111)

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Abstract

Fabrication of a two-dimensional covalent network of honeycomb nanosheets comprising small 1,3,5-triamino benzene and benzene-1,3,5-tricarboxaldehyde aromatic building blocks was conducted on Au(111) in a pH-controlled aqueous solution. In situ scanning tunneling microscopy revealed a large defect-free and homogeneous honeycomb π-conjugated nanosheet at the Au(111)/liquid interface. An electrochemical potential dependence indicated that the nanosheets were the result of thermodynamic self-assembly based not only on the reaction equilibrium but also on the adsorption (partition) equilibrium, which was controlled by the building block surface coverage as a function of electrode potential.

Graphical abstract: Monomolecular covalent honeycomb nanosheets produced by surface-mediated polycondensation between 1,3,5-triamino benzene and benzene-1,3,5-tricarbox aldehyde on Au(111)

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Article information


Submitted
04 Mar 2020
Accepted
27 May 2020
First published
28 May 2020

This article is Open Access

Nanoscale Adv., 2020, Advance Article
Article type
Paper

Monomolecular covalent honeycomb nanosheets produced by surface-mediated polycondensation between 1,3,5-triamino benzene and benzene-1,3,5-tricarbox aldehyde on Au(111)

M. Kunitake, R. Tanoue, R. Higuchi, S. Yoshimoto, R. Haraguchi, S. Uemura, N. Kimizuka, A. Z. Stieg and J. K. Gimzewski, Nanoscale Adv., 2020, Advance Article , DOI: 10.1039/D0NA00180E

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