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Issue 23, 2018
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Amino acid appended perylene bisimides: self-assembly, immobilization on nanocrystalline TiO2, and electrochromic properties

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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.

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

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Publication details

The article was received on 17 Aug 2018, accepted on 29 Oct 2018 and first published on 30 Oct 2018


Article type: Paper
DOI: 10.1039/C8NJ04214D
Citation: New J. Chem., 2018,42, 19020-19025
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    Amino acid appended perylene bisimides: self-assembly, immobilization on nanocrystalline TiO2, and electrochromic properties

    R. Lundy, E. R. Draper and J. J. Walsh, New J. Chem., 2018, 42, 19020
    DOI: 10.1039/C8NJ04214D

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