Issue 15, 2021

Impact of subtle change in branched amino acid on the assembly and properties of perylene bisimides hydrogels

Abstract

We investigate how apparent slight changes to the chemical structure of amino acid-functionalised perylene bisimides (PBIs) affect the self-assembled aggregates formed and their resulting physical and optical properties. PBIs functionalised with L-valine (PBI-V), L-leucine (PBI-L) and L-isoleucine (PBI-I) are investigated due to their similarly branched structure and their assemblies in water were studied using UV-vis absorption spectroscopy, cyclic voltammetry (CV), small angle X-ray scattering (SAXS) and viscosity at different pHs. It was seen that each PBI behaved differently. Each of the PBIs were then used to prepare hydrogels, and their properties again assessed, with PBI-I forming different hydrogels than the other PBIs. By understanding how slight changes in chemical structure can affect bulk properties we become a step closer to designing gels with specific physical and electrical properties.

Graphical abstract: Impact of subtle change in branched amino acid on the assembly and properties of perylene bisimides hydrogels

Supplementary files

Article information

Article type
Paper
Submitted
26 Mai 2021
Accepted
08 Jul 2021
First published
08 Jul 2021
This article is Open Access
Creative Commons BY license

Mater. Adv., 2021,2, 5248-5253

Impact of subtle change in branched amino acid on the assembly and properties of perylene bisimides hydrogels

J. G. Egan, G. Brodie, D. McDowall, A. J. Smith, C. J. C. Edwards-Gayle and E. R. Draper, Mater. Adv., 2021, 2, 5248 DOI: 10.1039/D1MA00470K

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