Sponge-Like Behaviour in Isoreticular Cu(Gly-His-X) Peptide-Based Porous Materials

Marti-Gastaldo, Carlos, Warren, John E, Briggs, Michael E, Armstrong, Jayne A, Thomas, K Mark and Rosseinsky, Matthew J ORCID: 0000-0002-1910-2483 (2015) Sponge-Like Behaviour in Isoreticular Cu(Gly-His-X) Peptide-Based Porous Materials CHEMISTRY-A EUROPEAN JOURNAL, 21 (45). pp. 16027-16034. ISSN 0947-6539, 1521-3765

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Abstract

We report two isoreticular 3D peptide-based porous frameworks formed by coordination of the tripeptides Gly-L-His-Gly and Gly-L-His-L-Lys to Cu^II which display sponge-like behaviour. These porous materials undergo structural collapse upon evacuation that can be reversed by exposure to water vapour, which permits recovery of the original open channel structure. This is further confirmed by sorption studies that reveal that both solids exhibit selective sorption of H<inf>2</inf>O while CO<inf>2</inf> adsorption does not result in recovery of the original structures. We also show how the pendant aliphatic amine chains, present in the framework from the introduction of the lysine amino acid in the peptidic backbone, can be post-synthetically modified to produce urea-functionalised networks by following methodologies typically used for metal-organic frameworks built from more rigid "classical" linkers.

Item Type:	Article
Uncontrolled Keywords:	metal-organic frameworks, nanoporous materials, peptides, postsynthetic modifications, water adsorption
Depositing User:	Symplectic Admin
Date Deposited:	14 Apr 2016 15:37
Last Modified:	16 Jun 2026 08:17
DOI:	10.1002/chem.201502098
Related Websites:	Author Publisher
URI:	https://livrepository.liverpool.ac.uk/id/eprint/3000562
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