Egan, J. G., Brodie, G., McDowall, D., Smith, A. J., Edwards-Gayle, C. J. C. and Draper, E. R. (2021) Impact of subtle change in branched amino acid on the assembly and properties of perylene bisimides hydrogels. Materials Advances, 2(15), pp. 5248-5253. (doi: 10.1039/d1ma00470k)
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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.
| Item Type: | Articles |
|---|---|
| Additional Information: | Acknowledgements: ERD and JGE thanks the University of Glasgow for a bank studentship. ERD thanks the Leverhulme Trust for an Early Career Fellowship (ECF-2017-223), the EPSRC for a New Investigator Award (EP/S032673/1). ERD and GB thank the University of Glasgow for an EPSRC Impact Acceleration Award. We thank Diamond for the award of beamtime on B21, reference number SM27906-1 and SM27520-1. This work benefitted from SasView software, originally developed by the DANSE project under NSF award DMR-0520547. We would like to thank Dr Tom Welsh for help with the reply to referees whilst ERD was on maternity leave. DM would like to thank the Leverhulme Trust for funding (RPG-2018-013). |
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Draper, Emily |
| Authors: | Egan, J. G., Brodie, G., McDowall, D., Smith, A. J., Edwards-Gayle, C. J. C., and Draper, E. R. |
| College/School: | College of Science and Engineering > School of Chemistry |
| Journal Name: | Materials Advances |
| Publisher: | Royal Society of Chemistry (RSC) |
| ISSN: | 2633-5409 |
| Published Online: | 08 July 2021 |
| Copyright Holders: | Copyright © 2021 The Authors |
| First Published: | First published in Materials Advances 2(15): 5248-5253 |
| Publisher Policy: | Reproduced under a Creative Commons licence |
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