Ionic liquids and plastic crystals utilising the oxazolidinium cation: the effect of ether functionality in the ring

2021 ◽  
Author(s):  
Colin S. M. Kang ◽  
Ruhamah Yunis ◽  
Haijin Zhu ◽  
Cara M. Doherty ◽  
Oliver E. Hutt ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Ionic Conductivity ◽  
Plastic Crystals

The synthesis and characterisation of a series of new oxazolidinium-based salts shows that ether functionality in the ring can have beneficial impacts on properties including ionic conductivity.

Solidification of Ionic Liquids: Theory and Techniques

2010 ◽  
Vol 63 (4) ◽  
pp. 544 ◽  
Author(s):  
Anja-Verena Mudring
Keyword(s):  
Phase Transition ◽  
Ionic Liquid ◽  
Ionic Liquids ◽  
Solid Phase ◽  
Soft Materials ◽  
Separation Science ◽  
Vast Number ◽  
Plastic Crystals ◽  
Thermal Fluids ◽  
Solid Phase Transition

Ionic liquids (ILs) have become an important class of solvents and soft materials over the past decades. Despite being salts built by discrete cations and anions, many of them are liquid at room temperature and below. They have been used in a wide variety of applications such as electrochemistry, separation science, chemical synthesis and catalysis, for breaking azeotropes, as thermal fluids, lubricants and additives, for gas storage, for cellulose processing, and photovoltaics. It has been realized that the true advantage of ILs is their modular character. Each specific cation–anion combination is characterized by a unique, characteristic set of chemical and physical properties. Although ILs have been known for roughly a century, they are still a novel class of compounds to exploit due to the vast number of possible ion combinations and one fundamental question remains still inadequately answered: why do certain salts like ILs have such a low melting point and do not crystallize readily? This Review aims to give an insight into the liquid–solid phase transition of ILs from the viewpoint of a solid-state chemist and hopes to contribute to a better understanding of this intriguing class of compounds. It will introduce the fundamental theories of liquid–solid-phase transition and crystallization from melt and solution. Aside form the formation of ideal crystals the development of solid phases with disorder and of lower order like plastic crystals and liquid crystals by ionic liquid compounds are addressed. The formation of ionic liquid glasses is discussed and finally practical techniques, strategies and methods for crystallization of ionic liquids are given.

ChemInform Abstract: Ionic Conductivity of Nanostructured Hybrid Materials Designed from Imidazolium Ionic Liquids and Kaolinite.

ChemInform ◽  
2009 ◽  
Vol 40 (8) ◽  
Author(s):  
Sadok Letaief ◽  
Thomas Diaco ◽  
Wendy Pell ◽  
Serge I. Gorelsky ◽  
Christian Detellier
Keyword(s):  
Ionic Liquids ◽  
Ionic Conductivity ◽  
Hybrid Materials ◽  
Imidazolium Ionic Liquids

scholarly journals Mixed Ionic-Electronic Conductors Based on PEDOT:PolyDADMA and Organic Ionic Plastic Crystals

Polymers ◽  
2020 ◽  
Vol 12 (9) ◽  
pp. 1981
Author(s):  
Rafael Del Olmo ◽  
Nerea Casado ◽  
Jorge L. Olmedo-Martínez ◽  
Xiaoen Wang ◽  
Maria Forsyth
Keyword(s):  
Energy Storage ◽  
Ionic Conductivity ◽  
Electronic Devices ◽  
Electronic Conductivity ◽  
Ionic Conductivities ◽  
New Materials ◽  
Plastic Crystals ◽  
Energy Storage Applications ◽  
Mixed Ionic Electronic Conductors ◽  
Electronic Conductors

Mixed ionic-electronic conductors, such as poly(3,4-ethylenedioxythiophene): poly(styrenesulfonate) (PEDOT:PSS) are postulated to be the next generation materials in energy storage and electronic devices. Although many studies have aimed to enhance the electronic conductivity and mechanical properties of these materials, there has been little focus on ionic conductivity. In this work, blends based on PEDOT stabilized by the polyelectrolyte poly(diallyldimethylammonium) (PolyDADMA X) are reported, where the X anion is either chloride (Cl), bis(fluorosulfonyl)imide (FSI), bis(trifluoromethylsulfonyl)imide (TFSI), triflate (CF3SO3) or tosylate (Tos). Electronic conductivity values of 0.6 S cm−1 were achieved in films of PEDOT:PolyDADMA FSI (without any post-treatment), with an ionic conductivity of 5 × 10−6 S cm−1 at 70 °C. Organic ionic plastic crystals (OIPCs) based on the cation N-ethyl-N-methylpyrrolidinium (C2mpyr+) with similar anions were added to synergistically enhance both electronic and ionic conductivities. PEDOT:PolyDADMA X / [C2mpyr][X] composites (80/20 wt%) resulted in higher ionic conductivity values (e.g., 2 × 10−5 S cm−1 at 70 °C for PEDOT:PolyDADMA FSI/[C2mpyr][FSI]) and improved electrochemical performance versus the neat PEDOT:PolyDADMA X with no OIPC. Herein, new materials are presented and discussed including new PEDOT:PolyDADMA and organic ionic plastic crystal blends highlighting their promising properties for energy storage applications.

scholarly journals Ionic liquids and organic ionic plastic crystals utilizing small phosphonium cations

2011 ◽  
Vol 21 (21) ◽  
pp. 7640 ◽  
Author(s):  
Vanessa Armel ◽  
David Velayutham ◽  
Jiazeng Sun ◽  
Patrick C. Howlett ◽  
Maria Forsyth ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Plastic Crystals ◽  
Phosphonium Cations

The influence of alkyl chain branching on the properties of pyrrolidinium-based ionic electrolytes

2020 ◽  
Vol 22 (32) ◽  
pp. 18102-18113 ◽  
Author(s):  
Danah Al-Masri ◽  
Ruhamah Yunis ◽  
Anthony F. Hollenkamp ◽  
Cara M. Doherty ◽  
Jennifer M. Pringle
Keyword(s):  
Ionic Liquids ◽  
Electrochemical Properties ◽  
Alkyl Chain ◽  
Chain Branching ◽  
Plastic Crystals ◽  
New Family

Introduction of a branched alkyl chain onto the widely used pyrrolidinium cation has produced a new family of ionic liquids and plastic crystals with advantageous physical, thermal and electrochemical properties.

Ionic liquids and plastic crystals based on tertiary sulfonium and bis(fluorosulfonyl)imide

2010 ◽  
Vol 55 (3) ◽  
pp. 1221-1226 ◽  
Author(s):  
Hong-Bo Han ◽  
Jin Nie ◽  
Kai Liu ◽  
Wei-Kun Li ◽  
Wen-Fang Feng ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Plastic Crystals
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