Hydration of a 2D Supramolecular Assembly: Bitartrate on Cu(110)



Lin, Chenfang, Darling, George R ORCID: 0000-0001-9329-9993, Forster, Matthew, McBride, Fiona ORCID: 0000-0003-2985-3173, Massey, Alan and Hodgson, Andrew ORCID: 0000-0001-8677-7467
(2020) Hydration of a 2D Supramolecular Assembly: Bitartrate on Cu(110). JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 142 (32). pp. 13814-13822.

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Abstract

Hydration layers play a key role in many technical and biological systems, but our understanding of these structures remains very limited. Here, we investigate the molecular processes driving hydration of a chiral metal-organic surface, bitartrate on Cu(110), which consists of hydrogen-bonded bitartrate rows separated by exposed Cu. Initially water decorates the metal channels, hydrogen bonding to the exposed O ligands that bind bitartrate to Cu, but does not wet the bitartrate rows. At higher temperature, water inserts into the structure, breaks the existing intermolecular hydrogen bonds, and changes the adsorption site and footprint. Calculations show this process is driven by the creation of stable adsorption sites between the carboxylate ligands, to allow hydration of O-Cu ligands within the interior of the structure. This work suggests that hydration of polar metal-adsorbate ligands will be a dominant factor in many systems during surface hydration or self-assembly from solution.

Item Type: Article
Depositing User: Symplectic Admin
Date Deposited: 22 Jul 2020 08:32
Last Modified: 18 Jan 2023 23:40
DOI: 10.1021/jacs.0c04747
Related URLs:
URI: https://livrepository.liverpool.ac.uk/id/eprint/3094823