An electrochromic ionic liquid: design, characterisation and performance in a solid state platform
Kavanagh, Andrew, Fraser, Kevin J.ORCID: 0000-0002-9718-5405, Byrne, Robert and Diamond, DermotORCID: 0000-0003-2944-4839
(2012)
An electrochromic ionic liquid: design, characterisation and performance in a solid state platform.
ACS Applied Materials and Interfaces, 5
(1).
pp. 55-62.
ISSN 1944-8244
This work describes the synthesis and characteristics of a novel electrochromic ionic liquid (IL) based on a phosphonium core tethered to a viologen moiety. When integrated into a solid-state electrochromic platform, the viologen modified IL behaved as both the electrolyte and the electrochromic material. Platform fabrication was achieved through in situ photo-polymerisation and encapsulation of this novel IL within a hybrid sol-gel. Important parameters of the platform performance, including its coloration efficiency, switching kinetics and optical properties were characterised using UV/Vis spectroscopy and cyclic voltammetry in tandem. The electrochromic platform exhibits a coloration efficiency of 10.72 cm2C-1, and a varied optical output as a function of the incident current. Despite the rather viscous nature of the material, the platform exhibited approximately two orders of magnitude faster switching kinetics (221 seconds to reach 95 % absorbance) when compared to previously reported electrochromic ILs (18,000 seconds).
This item is licensed under a Creative Commons Attribution-NonCommercial-Share Alike 3.0 License. View License
Funders:
European Commission through a Marie Curie Actions re-integration grant (IRG) (PIRG07-GA-2010-268365), Irish Research Council for Science, Engineering and Technology, Science Foundation Ireland under grant 07/CE/I1147, Enterprise Ireland grant 07/RFP/MASF812, which is part of the EU-MATERA initiative
ID Code:
17667
Deposited On:
06 Mar 2013 14:09 by
Andrew Kavanagh
. Last Modified 12 Jul 2019 10:57