A Supramolecular Approach to Preparation of Nanographene Adlayers Using Water-soluble Molecular Capsules.

A Supramolecular Approach to Preparation of Nanographene Adlayers Using Water-soluble Molecular Capsules. Angew Chem Int Ed Engl. 2018 Sep 26;: Authors: Origuchi S, Kishimoto M, Yoshizawa M, Yoshimoto S Abstract Polycyclic aromatic hydrocarbons (PAHs) are excellent building blocks for the creation of two-dimensional (2D) nanosheets. 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 H₂SO₄ in the presence of the water-soluble capsules containing PAHs such as ovalene, circobiphenyl, and 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, 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. PMID: 30259612 [PubMed - as supplied by publisher]
Source: Angewandte Chemie - Category: Chemistry Authors: Tags: Angew Chem Int Ed Engl Source Type: research