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

Lookup NU author(s): Jayne Armstrong, Emeritus Professor Mark Thomas

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This work is licensed under a Creative Commons Attribution 4.0 International License (CC BY 4.0).


Abstract

Abstract: We report two isoreticular 3D peptide-based porous frameworks formed by coordination of the tripepti-des 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 re- covery 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 pepti-dic 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.


Publication metadata

Author(s): Martí-Gastaldo C, Warren JE, Briggs ME, Armstrong JA, Thomas KM, Rosseinsky MJ

Publication type: Article

Publication status: Published

Journal: Chemistry - A European Journal

Year: 2015

Volume: 21

Issue: 45

Pages: 16027-16034

Print publication date: 02/11/2015

Online publication date: 25/09/2015

Acceptance date: 04/09/2015

Date deposited: 21/12/2015

ISSN (print): 0947-6539

ISSN (electronic): 1521-3765

Publisher: Wiley - VCH Verlag GmbH & Co. KGaA

URL: http://dx.doi.org/10.1002/chem.201502098

DOI: 10.1002/chem.201502098


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