BROWSE

Related Scientist

Researcher

Karel Goossens
다차원 탄소재료 연구단
more info

Anisotropic, Organic Ionic Plastic Crystal Mesophases from Persubstituted Imidazolium Pentacyanocyclopentadienide Salts

Cited 0 time in webofscience Cited 0 time in scopus
28 Viewed 7 Downloaded
Title
Anisotropic, Organic Ionic Plastic Crystal Mesophases from Persubstituted Imidazolium Pentacyanocyclopentadienide Salts
Author(s)
Karel Goossens; Rakers, L; Heinrich, B; Guillermo Ahumada; Ichikawa, T; Donnio, B; Shin, TJ; Christopher W. Bielawski; Glorius, F
Publication Date
2019-12
Journal
CHEMISTRY OF MATERIALS, v.31, no.23, pp.9593 - 9603
Publisher
AMER CHEMICAL SOC
Abstract
We describe the synthesis, supramolecular organization, and thermal characteristics of an unprecedented family of symmetric 1,2,3,4,5-pentaalkylimidazohum ([(C-n)(5)im](+)) salts equipped with halide, nitrate, or pentacyanocyclopentadienide ([Cp(CN)(5)](-)) counterions. Salts containing relatively small anions were obtained as low-melting solids, whereas those with [Cp(CN)(5)](-) anions were found to be ionic liquids even below room temperature. A permethylated derivative, [(C-1)(5)im][Cp-(CN)(5)], proved to be exceptional. Upon heating, the salt self-organized into a new type of organic ionic plastic crystal (OIPC) mesophase, which was termed M-hex and whose anisotropic structure featured hexagonally ordered, rotating anionic stacks positioned within a continuum composed of disordered cations. The structure of the mesophase resembles that of classical columnar liquid-crystalline phases, despite the absence of long, flexible chains. In the M-hex phase, the cations surrounding the anionic columns effectively fulfill the role of "softening" structural constituents, much in the same way as flexible chains. The discovery of the novel mesophase, which displays a two-dimensional, and thus intrinsically anisotropic, lattice resulting from the rotation of entire ionic assemblies around a columnar axis, represents a new paradigm in the field of OIPCs. Relatively high ionic conductivities were measured in the M-hex phase, particularly after doping with the corresponding sodium salt, Na[Cp(CN)(5)], demonstrating the materials' potential for use in electrochemical applications such as sodium-ion batteries. © 2019 American Chemical Society
URI
https://pr.ibs.re.kr/handle/8788114/6717
ISSN
0897-4756
Appears in Collections:
Center for Multidimensional Carbon Materials(다차원 탄소재료 연구단) > Journal Papers (저널논문)
Files in This Item:
05 acs.chemmater.pdfDownload

qrcode

  • facebook

    twitter

  • Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.
해당 아이템을 이메일로 공유하기 원하시면 인증을 거치시기 바랍니다.

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

Browse