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Amino acid appended perylene bisimides: self-assembly, immobilization on nanocrystalline TiO2, and electrochromic properties

Lundy, Ross orcid logoORCID: 0000-0002-1329-8614, Draper, Emily R. orcid logoORCID: 0000-0002-3900-7934 and Walsh, James J. orcid logoORCID: 0000-0003-4862-8449 (2018) Amino acid appended perylene bisimides: self-assembly, immobilization on nanocrystalline TiO2, and electrochromic properties. New Journal of Chemistry, 42 (23). pp. 19020-19025. ISSN 1144-0546

Abstract
Titanium dioxide (TiO2) nanoparticle films have been used as a conducting support for the immobilisation of alanine-appended perylene bisimides (PBI-A) via dip-coating and carboxylate chemisorption. The solvent- and concentration-dependent supramolecular structures of aggregated PBI-A were successfully translated onto the TiO2 electrodes, providing a method to control PBI-A assembly on a surface suitable for multiple functionalities. Electron microscopy revealed the extent of aggregation on the surface, and how this affects electrochemical properties. The films showed electrochemical reversibility by cyclic voltammetry, and preliminary electrochromic studies show that three colour states could be accessed. Strategies to improve the overall device performance are discussed
Metadata
Item Type:Article (Published)
Refereed:Yes
Subjects:Physical Sciences > Chemistry
Physical Sciences > Electrochemistry
Physical Sciences > Semiconductors
Physical Sciences > Spectrum analysis
Physical Sciences > Thin films
DCU Faculties and Centres:DCU Faculties and Schools > Faculty of Science and Health > School of Chemical Sciences
Research Initiatives and Centres > National Centre for Sensor Research (NCSR)
Publisher:Royal Society of Chemistry
Official URL:http://dx.doi.org/10.1039/C8NJ04214D
Copyright Information:© 2018 Royal Society of Chemistry
Use License:This item is licensed under a Creative Commons Attribution-NonCommercial-Share Alike 3.0 License. View License
Funders:Science Foundation Ireland (SFI) under the Grant No. 15/SIRG/3517 (JJW), Leverhulme Trust for an Early Career Fellowship (ECF-2017-223), University of Glasgow for a LKAS Fellowship
ID Code:22926
Deposited On:16 Jan 2019 11:17 by James Walsh . Last Modified 06 Oct 2019 03:30
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