Jump to main content
Jump to site search

Anion-induced ionic liquid crystals of diphenylviologens


Two series of ionic liquid crystals derived from diphenylviologens 1-2 were prepared and their photophysical and electrochemical properties were also investigated. Crystallographic data of two single crystals 1-RSO3 (n = 10) and 2-BF4 (n = 12) showed that a mono or bilayer lamellar structure was induced by intermolecular Hbonds. All mesophases were identified as smectic A phases by POM textures and powder XRD data. A linear correlation plot (R2 = 0.8885) of the d-spacings with the calculated effective radius (Reff) in compounds 2-X was obtained. Aggregation-induced emission (AIE) ranged from ca. 463-529 nm observed in compounds 2-X (e.g., X = BF4, PF6, RSO3, OTf and NTf2) was also anions dependent. Also these compounds 2-X exhibited thermal switch with On/Off-emission mode between Cr and SmA phases. On cyclic voltammograms, compound 1-RSO3 (n = 12) exhibited two distinct reversible redox couples, in contrast the compound 2-RSO3 (n = 12) formed spike-like voltammetric peak potentials without redox couples. These viologens-based ILCs might have potential applications for the design of redox active or electrochromic displays.

Back to tab navigation

Supplementary files

Publication details

The article was received on 23 Jun 2018, accepted on 03 Aug 2018 and first published on 08 Aug 2018

Article type: Paper
DOI: 10.1039/C8TC03090A
Citation: J. Mater. Chem. C, 2018, Accepted Manuscript
  •   Request permissions

    Anion-induced ionic liquid crystals of diphenylviologens

    C. K. Lai, R. Wang and G. Lee, J. Mater. Chem. C, 2018, Accepted Manuscript , DOI: 10.1039/C8TC03090A

Search articles by author