J. C. Goeltz and L. N. Matsushima
Chem. Commun., 2017,53, 9983-9985
DOI:
10.1039/C7CC04837H,
Communication
Metal-free deep eutectic solvents composed of hydrogen bond donors and viologen-based ammonium salts exhibit reversible electrochemistry with viologen concentrations of 4.2 M and freezing points near room temperature. Spectroelectrochemistry and simulation of voltammetry indicate poor aggregation of the reduced radical cation.