Interesting phase behaviors and ion-conducting properties of dicationic N-alkylimidazolium tetrafluoroborate salts. Issue 7 (29th January 2019)

• Record Type: Journal Article
• Authors: Chae, Hyunho; Lee, Yong-Hoon; Yang, Minyong; Yoon, Won-Jin; Yoon, Dong Ki; Jeong, Kwang-Un; Song, Yeon Hwa; Choi, U Hyek; Lee, Minjae
• Is Part Of: RSC advances. Volume 9:Issue 7(2019)
• Page Start: 3972
• Page End: 3978
• Publication Date: 2019-01-29
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/c8ra09208g
• Languages: English
• ISSNs: 2046-2069

Abstract

Abstract : A series of dicationic imidazolium bis(tetrafluoroborate) salts were newly synthesized, and their phase transition behaviors were correlated with thermal, scattering, optical and conductivity results. Abstract : A series of dicationic imidazolium bis(tetrafluoroborate) salts were newly synthesized, and their phase transition behaviors were correlated with thermal, scattering, optical and conductivity results. The bis-imidazolium salts having side-chain lengths of C6 –C10 showed plastic crystal mesophases, while a liquid crystal mesophase was formed in the bis-imidazolium salts with long side-chains (C11 and C12 ). Soft plastic and liquid crystalline phases were also confirmed by wide-angle X-ray diffraction. For the bis-imidazolium salts exhibiting a plastic crystal mesophase, the ionic conductivity suddenly increased at the melting temperature. However, the bis-imidazolium salts with long side-chains showed a slope increase during the liquid crystal-liquid crystal transition.