Aggregate dependent electrochromic properties of amino acid appended naphthalene diimides in water

Randle, R. I., Cavalcanti, L., Sproules, S. and Draper, E. R. (2022) Aggregate dependent electrochromic properties of amino acid appended naphthalene diimides in water. Materials Advances, 3(7), pp. 3326-3331. (doi: 10.1039/D2MA00207H)

Abstract

Naphthalene diimides can have electrochromic applications due to their highly stable dark reduced state along with a transparent colourless neutral state. We show here that the colouration and reversibility of water-dispersible amino acid appended NDIs are directly influenced by the aggregated state present at different pH using spectroelectrochemistry, small angle neutron scattering (SANS) and cyclic voltammetry (CV). We find the aggregation itself is influenced by both pH and the amino acid or dipeptide in the structure, with each NDI having a preferred morphology giving rise to a more intensely coloured state.

• Item Type: Articles
• Additional Information: The authors thank the Leverhulme Trust (ECF-2017-223), the EPSRC (EP/ S032673/1) and (EP/N509668/1), and the UKRI (MR/V021087/1) for funding. This work benefitted from SasView software, originally developed by the DANSE project under NSF award DMR-0520547.
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Sproules, Dr Stephen and Draper, Emily and Randle, Rebecca

Creator Roles

Randle, R. I.: Formal analysis, Investigation, Writing – original draft, Writing – review and editing
Sproules, S.: Investigation, Resources, Writing – original draft, Writing – review and editing
Draper, E. R.: Conceptualization, Funding acquisition, Project administration, Resources, Supervision, Writing – original draft, Writing – review and editing

• Authors: Randle, R. I., Cavalcanti, L., Sproules, S., and Draper, E. R.
• College/School: College of Science and Engineering > School of Chemistry
• Journal Name: Materials Advances
• Publisher: Royal Society of Chemistry
• ISSN: 2633-5409
• ISSN (Online): 2633-5409
• Published Online: 14 March 2022
• Copyright Holders: Copyright © 2022 The Authors
• First Published: First published in Materials Advances 3(7): 3326-3331
• Publisher Policy: Reproduced under a Creative Commons License

Project Code	Award No	Project Name	Principal Investigator	Funder's Name	Funder Ref	Lead Dept
300895		Aligning Self-Assembled Materials for Wearable Electronics	Emily Draper	Leverhulme Trust (LEVERHUL)	ECF-2017-223	Chemistry
306112		Electrochromic Gels for Smart Windows	Emily Draper	Engineering and Physical Sciences Research Council (EPSRC)	EP/S032673/1	Chemistry
172865		EPSRC DTP 16/17 and 17/18	Mary Beth Kneafsey	Engineering and Physical Sciences Research Council (EPSRC)	EP/N509668/1	Research and Innovation Services