Synthesis and thermotropic properties of new green electrochromic ionic liquid crystals

Lucia Veltri (Corresponding Author), Gabriella Cavallo, Amerigo Beneduci, Pierangelo Metrangolo, Giuseppina Anna Corrente, Maurizio Ursini, Roberto Romeo, Giancarlo Terraneo, Bartolo Gabriele (Corresponding Author)

    Research output: Contribution to journalArticleScientificpeer-review

    7 Citations (Scopus)

    Abstract

    Novel 1,1′-bis(4-alkylphenyl)-[4,4′-bipyridine]-1,1′-diium salts, with alkyl chains of different lengths (8, 10 and 14 carbon atoms) and with different counteranions (Cl-, NTf2-, OTf-, OTs-, PF6-, BPh4-), have been prepared and fully characterized for their thermotropic behavior by polarized optical microscopy (POM), and calorimetric measurements. Almost all the synthesized compounds showed a high thermal stability, a wide temperature range of liquid-crystalline mesophase and, for some of them, the LC transition temperatures were relatively low. These compounds also exhibited electrochromic properties, which have been studied both in solution and in the LC phase, making the new materials very interesting for different opto-electronic applications.

    Original languageEnglish
    Pages (from-to)18285-18293
    Number of pages9
    JournalNew Journal of Chemistry
    Volume43
    Issue number46
    DOIs
    Publication statusPublished - 2019
    MoE publication typeA1 Journal article-refereed

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