From Colloidal Stability in Ionic Liquids to Advanced Soft Materials Using Unique Media

Langmuir ◽  
2011 ◽  
Vol 27 (15) ◽  
pp. 9105-9115 ◽  
Author(s):  
Kazuhide Ueno ◽  
Masayoshi Watanabe
Keyword(s):  
Ionic Liquids ◽  
Colloidal Stability ◽  
Soft Materials

Colloidal Stability in Ionic Liquids and Relevant Soft Materials

2012 ◽  
Vol 1473 ◽  
Author(s):  
Kazuhide Ueno ◽  
Masayoshi Watanabe
Keyword(s):  
Ionic Liquids ◽  
Colloidal Particles ◽  
Colloidal Stability ◽  
Surface Force ◽  
Soft Materials ◽  
Electrolyte Solutions ◽  
Colloidal Systems ◽  
Dispersion Media ◽  
And Performance ◽  
Solvation Forces

ABSTRACTIonic liquids (ILs) are receiving a great deal of attention as synthetic and dispersion media for colloidal systems, as well as alternatives to organic solvents and electrolyte solutions. Colloidal stability is an essential factor for determining the properties and performance of colloidal systems combined with ILs. The remarkable properties of ILs primarily originate from their highly ionic nature. While such high ionic strength often causes colloidal aggregation in aqueous and organic dispersions, certain colloidal particles can be well dispersed in ILs without any stabilizers. First, we will discuss the colloidal stability of bare and polymer-grafted silica nanoparticles and the surface force between silica substrates in ILs. Three different repulsions between colloidal particles—electrostatic, steric, and solvation forces—will be highlighted. A possible interpretation of the stabilization mechanism in ILs, both in the presence and in the absence of stabilizers, will be proposed. Next, we will provide an overview of our recent studies on colloidal soft materials with ILs. On the basis of dispersed states of the silica colloids, two different soft materials, colloidal gel and colloidal glass in ILs, were fabricated. Their functional properties (such as ionic transport, rheological properties, and optical properties) and the microstructure of the colloidal materials will also be presented.

Europium-Based Ionic Liquids as Luminescent Soft Materials

2008 ◽  
Vol 47 (40) ◽  
pp. 7631-7634 ◽  
Author(s):  
Sifu Tang ◽  
Arash Babai ◽  
Anja-Verena Mudring
Keyword(s):  
Ionic Liquids ◽  
Soft Materials

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.

scholarly journals Thermally robust solvent-free biofluids of M13 bacteriophage engineered for high compatibility with anhydrous ionic liquids

2019 ◽  
Vol 55 (72) ◽  
pp. 10752-10755 ◽  
Author(s):  
Alex P. S. Brogan ◽  
Nimrod Heldman ◽  
Jason P. Hallett ◽  
Angela M. Belcher
Keyword(s):  
Ionic Liquids ◽  
Structural Complexity ◽  
Soft Materials ◽  
Solvent Free ◽  
M13 Bacteriophage

Soft materials typically lack structural complexity. Chemically modifying viruses can produce biomaterials with added functionality that overcome this limitation.

scholarly journals Electron Microscope Observation of Soft Materials Using Ionic Liquids

Hyomen Kagaku ◽  
2015 ◽  
Vol 36 (4) ◽  
pp. 195-200
Author(s):  
Susumu KUWABATA ◽  
Tetsuya TSUDA ◽  
Eiko MOCHIZUKI ◽  
Tsukasa TORIMOTO
Keyword(s):  
Ionic Liquids ◽  
Electron Microscope ◽  
Soft Materials ◽  
Microscope Observation ◽  
Electron Microscope Observation

Soft materials with graphitic nanostructures

2007 ◽  
Vol 365 (1855) ◽  
pp. 1539-1552 ◽  
Author(s):  
Takuzo Aida ◽  
Takanori Fukushima
Keyword(s):  
Carbon Nanotubes ◽  
Ionic Liquids ◽  
Self Assembly ◽  
Soft Materials ◽  
Review Article ◽  
New Family ◽  
Nanotube Composites ◽  
Long Time ◽  
Walled Carbon Nanotubes ◽  
Imidazolium Ion

This review article focuses on our recent studies on novel soft materials consisting of carbon nanotubes. Single-walled carbon nanotubes, when suspended in imidazolium ion-based ionic liquids and ground in an agate mortar, form physical gels (bucky gels), where heavily entangled bundles of carbon nanotubes are exfoliated to give highly dispersed, much finer bundles. By using bucky gels, the first printable actuators that operate in air for a long time without any external electrolyte are developed. Furthermore, the use of polymerizable ionic liquids as the gelling media results in the formation of electroconductive polymer/nanotube composites with enhanced mechanical properties. The article also highlights a new family of nanotubular graphite, via self-assembly of amphiphilic hexabenzocoronene (HBC) derivatives. The nanotubes consist of a graphitic wall composed of a great number of π-stacked HBC units and are electroconductive upon oxidation. The use of amphiphilic HBCs with functional groups results in the formation of nanotubes with various interesting properties.

scholarly journals Tuning the colloidal stability in ionic liquids by controlling the nanoparticles/liquid interface

Soft Matter ◽  
2014 ◽  
Vol 10 (8) ◽  
pp. 1097 ◽  
Author(s):  
M. Mamusa ◽  
J. Siriex-Plénet ◽  
F. Cousin ◽  
E. Dubois ◽  
V. Peyre
Keyword(s):  
Ionic Liquids ◽  
Colloidal Stability ◽  
Liquid Interface

Synthesis, structure and near-infrared photoluminescence of hexanitratoneodymate ionic liquids

2015 ◽  
Vol 44 (5) ◽  
pp. 2325-2332 ◽  
Author(s):  
Ling He ◽  
Shun-Ping Ji ◽  
Ning Tang ◽  
Ying Zhao ◽  
Guo-Hong Tao
Keyword(s):  
Ionic Liquids ◽  
Near Infrared ◽  
Soft Materials ◽  
High Symmetry

Novel water-free lanthanide ionic liquids, with high-symmetry 12-coordinated hexanitratoneodymate, are of interest as potential near-infrared (NIR) luminescent soft materials.

Recent Development of Soft Materials Containing Ionic Liquids

2006 ◽  
Vol 79 (7) ◽  
pp. 359-366
Author(s):  
Edy MARWANTA ◽  
Tomonobu MIZUMO ◽  
Hiroyuki OHNO
Keyword(s):  
Ionic Liquids ◽  
Soft Materials
Sign in / Sign up

Export Citation Format

Share Document