Bio-based Chitosan and Cellulose Ionic Liquid Gels: Polymeric Soft Materials for the Desulfurization of Fuel

2022 ◽  
Author(s):  
Carla Rizzo ◽  
Giuseppe Misia ◽  
Salvatore Marullo ◽  
Floriana Billeci ◽  
Francesca D'Anna
Keyword(s):  
Ionic Liquid ◽  
Volatile Compounds ◽  
Soft Materials

Desulfurization of fuel, that avoids the introduction in the atmosphere of toxic sulfur volatile compounds, usually formed during combustion, is a viable strategy to reduce pollution. To find new efficient...

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.

Polymeric ionic liquid coatings versus commercial solid-phase microextraction coatings for the determination of volatile compounds in cheeses

Talanta ◽  
2014 ◽  
Vol 121 ◽  
pp. 153-162 ◽  
Author(s):  
María J. Trujillo-Rodríguez ◽  
Honglian Yu ◽  
William T.S. Cole ◽  
Tien D. Ho ◽  
Verónica Pino ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Volatile Compounds ◽  
Solid Phase Microextraction ◽  
Solid Phase ◽  
Polymeric Ionic Liquid

scholarly journals NMR Spectroscopic Studies of Cation Dynamics in Symmetrically-Substituted Imidazolium-Based Ionic Liquid Crystals

2020 ◽  
Vol 21 (14) ◽  
pp. 5024
Author(s):  
Debashis Majhi ◽  
Andrei V. Komolkin ◽  
Sergey V. Dvinskikh
Keyword(s):  
Ionic Liquid ◽  
Liquid Crystals ◽  
Liquid Crystalline ◽  
Orientational Order ◽  
Soft Materials ◽  
Spectroscopic Studies ◽  
Single Chain ◽  
Self Assembling ◽  
Ionic Liquid Crystals ◽  
Cation Size

Ionic liquid crystals (ILCs) present a new class of non-molecular soft materials with a unique combination of high ionic conductivity and anisotropy of physicochemical properties. Symmetrically-substituted long-chain imidazolium-based mesogenic ionic liquids exhibiting a smectic liquid crystalline phase were investigated by solid state NMR spectroscopy and computational methods. The aim of the study was to reveal the correlation between cation size and structure, local dynamics, and orientational order in the layered mesophase. The obtained experimental data are consistent with the model of a rod-shaped cation with the two chains aligned in opposite directions outward from the imidazolium core. The alignment of the core plane to the phase director and the restricted conformations of the chain segments were determined and compared to those in single-chain counterparts. The orientational order parameter S~0.5–0.6 of double-chain ionic liquid crystals is higher than that of corresponding single-chain analogues. This is compatible with the enhanced contribution of van der Waals forces to the stabilization of smectic layers. Increased orientational order for the material with Br− counterions, which exhibit a smaller ionic radius and higher ability to form hydrogen bonds as compared to that of BF4−, also indicated a non-negligible influence of electrostatic and hydrogen bonding interactions. The enhanced rod-shape character and higher orientational order of symmetrically-substituted ILCs can offer additional opportunities in the design of self-assembling non-molecular materials.

scholarly journals Tackling Humidity with Designer Ionic Liquid‐Based Gas Sensing Soft Materials

2021 ◽  
pp. 2107205
Author(s):  
Carina Esteves ◽  
Susana I. C. J. Palma ◽  
Henrique M. A. Costa ◽  
Cláudia Alves ◽  
Gonçalo M. C. Santos ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Gas Sensing ◽  
Soft Materials

Effect of carbon nanotubes on properties of soft materials based on carbon nanotubes–ionic liquid combinations

Talanta ◽  
2013 ◽  
Vol 110 ◽  
pp. 160-163 ◽  
Author(s):  
M.L. Polo-Luque ◽  
B.M. Simonet ◽  
M. Valcárcel
Keyword(s):  
Carbon Nanotubes ◽  
Ionic Liquid ◽  
Soft Materials

Determination of volatile compounds in cider apple juices using a covalently bonded ionic liquid coating as the stationary phase in gas chromatography

2017 ◽  
Vol 409 (11) ◽  
pp. 3033-3041 ◽  
Author(s):  
Jairo Pello-Palma ◽  
Jaime González-Álvarez ◽  
María Dolores Gutiérrez-Álvarez ◽  
Enrique Dapena de la Fuente ◽  
Juan José Mangas-Alonso ◽  
...  
Keyword(s):  
Gas Chromatography ◽  
Ionic Liquid ◽  
Stationary Phase ◽  
Volatile Compounds ◽  
Covalently Bonded

Photostable soft materials with tunable emission based on sultone functionalized ionic liquid and lanthanides ions

2019 ◽  
Vol 209 ◽  
pp. 208-216 ◽  
Author(s):  
Talita J.S. Ramos ◽  
Guilherme H. Berton ◽  
Severino A. Júnior ◽  
Tania M. Cassol
Keyword(s):  
Ionic Liquid ◽  
Soft Materials ◽  
Functionalized Ionic Liquid ◽  
Tunable Emission
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