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Electrochromic Devices Based on Disubstituted Oxo‐Bipyridinium Ionic Liquids
Author(s) -
Jordão Noémi,
Cruz Hugo,
Branco Aida,
Pina Fernando,
Branco Luis C.
Publication year - 2015
Publication title -
chempluschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.801
H-Index - 61
ISSN - 2192-6506
DOI - 10.1002/cplu.201402232
Subject(s) - electrochromism , ionic liquid , electrochromic devices , cyclic voltammetry , electrochemistry , ionic bonding , electrolyte , materials science , inorganic chemistry , chemistry , ion , organic chemistry , electrode , catalysis
Electrochromic symmetric and non‐symmetric disubstituted oxo‐bipyridinium ionic liquids are developed in high purities and yields. Detailed spectroscopic (NMR, FTIR and elemental analysis), thermal (DSC for melting point and glass transition temperatures, T g determination) and electrochemical (cyclic and square wave voltammetry for determination of redox potential and evaluation of reversibility behaviour) analyses are performed. The most promising electrochromic oxo‐bipyridinium ionic liquids in combination with transparent electrolytes are tested as reversible electrochromic devices. More efficient and sustainable electrochromic devices inspired by bipyridinium ionic liquids can be conceived for industrial applications such as electrochromic car rear‐view mirrors and smart windows.