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

Carlos Martí-Gastaldo, John E. Warren, Michael E. Briggs, Jayne A. Armstrong, K. Mark Thomas, Matthew J. Rosseinsky

Research output: Contribution to journalArticlepeer-review


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 CuII 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 H2O while CO2 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.

Original languageEnglish
Pages (from-to)16027-16034
Number of pages8
JournalChemistry - A European Journal
Issue number45
Publication statusPublished - 1 Nov 2015
Externally publishedYes


  • metal-organic frameworks
  • nanoporous materials
  • peptides
  • postsynthetic modifications
  • water adsorption


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