scholarly journals Epoxy-Containing Ionic Liquids with Tunable Functionality

Molecules ◽  
2019 ◽  
Vol 24 (14) ◽  
pp. 2591
Author(s):  
Tetsuya Tsuda ◽  
Kazuki Iwasaki ◽  
Kohei Kumagai ◽  
Susumu Kuwabata
Keyword(s):  
Ionic Liquids ◽  
Ionic Conductivity ◽  
Physicochemical Properties ◽  
Exchange Reaction ◽  
Anion Exchange ◽  
Epoxy Group ◽  
Reaction Intermediates ◽  
Synthetic Route ◽  
The Future ◽  
Anion Exchange Reaction

New types of ionic liquids (ILs) with an epoxy group on a piperidinium-type cation were successfully synthesized by the simple anion exchange reaction of a solid 1-allyl-1-(oxiran-2-ylmethyl)piperidinium bromide, which was designed in this study. Unfortunately, the physicochemical properties, e.g., viscosity and ionic conductivity, of the ILs were inferior to those of common ILs such as 1-ethyl-3-methylimidazolium tetrafluoroborate ([C2mim][BF4]) and 1-butyl-3-methylimidazolium bis(trifluoromethanesulfonyl)amide ([C4mim][Tf2N]). However, the resulting ILs are of great interest as reaction intermediates: For example, the epoxy group on the cation could react with various reagents, including CO2. Consequently, the modification of the cation structure in the ILs was possible. This is particularly interesting because it is very difficult to modify commonly used ILs. The approach established in this article will provide a favorable synthetic route for creating novel functional ILs in the future.

Cholinium-based ionic liquids with pharmaceutically active anions

RSC Advances ◽  
2014 ◽  
Vol 4 (53) ◽  
pp. 28126-28132 ◽  
Author(s):  
João M. M. Araújo ◽  
Catarina Florindo ◽  
Ana B. Pereiro ◽  
Nicole S. M. Vieira ◽  
Ana A. Matias ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Exchange Reaction ◽  
Anion Exchange ◽  
Active Pharmaceutical Ingredients ◽  
Pharmaceutical Ingredients ◽  
Biopharmaceutical Properties ◽  
Anion Exchange Reaction

Ionic liquids with cholinium-based active pharmaceutical ingredients (API-ILs) were preparedviaa simple and sustainable two-step anion exchange reaction. The resulting salts have improved upon the chemical, physical and biopharmaceutical properties of the parent APIs.

Construction of uniform Co–Sn–X (X = S, Se, Te) nanocages with enhanced photovoltaic and oxygen evolution properties via anion exchange reaction

Nanoscale ◽  
2018 ◽  
Vol 10 (46) ◽  
pp. 22012-22024 ◽  
Author(s):  
Qian He ◽  
Shuolin Li ◽  
Shaowei Huang ◽  
Longqiang Xiao ◽  
Linxi Hou
Keyword(s):  
Exchange Reaction ◽  
Anion Exchange ◽  
Oxygen Evolution ◽  
Highly Efficient ◽  
Anion Exchange Reaction

Co–Sn–X (X = S, Se, Te) nanocages have been synthesized as highly efficient electrocatalysts for DSSCs and OER.

CsPbBr3 perovskite nanocrystals as highly selective and sensitive spectrochemical probes for gaseous HCl detection

2017 ◽  
Vol 5 (2) ◽  
pp. 309-313 ◽  
Author(s):  
Xiao Chen ◽  
Huawei Hu ◽  
Zhaoming Xia ◽  
Wei Gao ◽  
Wangyan Gou ◽  
...  
Keyword(s):  
Exchange Reaction ◽  
Anion Exchange ◽  
Ambient Conditions ◽  
Perovskite Nanocrystals ◽  
Anion Exchange Reaction

A rapid and facile gaseous anion-exchange reaction between CsPbBr3 perovskite nanocrystals and HCl vapor was carried out under the ambient conditions.

scholarly journals Formation of uniform PbS quantum dots by a spin-assisted successive precipitation and anion exchange reaction process using PbX2 (X = Br, I) and Na2S precursors

RSC Advances ◽  
2017 ◽  
Vol 7 (6) ◽  
pp. 3072-3077 ◽  
Author(s):  
Jin Hyuck Heo ◽  
Min Hyeok Jang ◽  
Min Ho Lee ◽  
Myoung Sang You ◽  
Sang-Wook Kim ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Exchange Reaction ◽  
Anion Exchange ◽  
Reaction Process ◽  
Pbs Quantum Dots ◽  
Anion Exchange Reaction

We devised a straightforward spin-assisted successive precipitation and anion exchange reaction (spin-SPAER) process in order to deposit relatively uniform PbS quantum dots (QDs) on mesoporous TiO2 (mp-TiO2).

Structural and microstructural changes during anion exchange of CoAl layered double hydroxides: anin situX-ray powder diffraction study

2010 ◽  
Vol 43 (3) ◽  
pp. 434-447 ◽  
Author(s):  
Rune E. Johnsen ◽  
Frank Krumeich ◽  
Poul Norby
Keyword(s):  
Phase Transformation ◽  
Exchange Reaction ◽  
Anion Exchange ◽  
Powder Diffraction ◽  
Layered Double Hydroxides ◽  
Two Phase ◽  
X Ray ◽  
Double Hydroxides ◽  
Anion Exchange Reaction

Anion-exchange processes in cobalt–aluminium layered double hydroxides (LDHs) were studied byin situsynchrotron X-ray powder diffraction (XRPD). The processes investigated were CoAl–CO3→ CoAl–Cl → CoAl–CO3, CoAl–Cl → CoAl–NO3and CoAl–CO3→ CoAl–SO4. The XRPD data show that the CoAl–CO3→ CoAl–Cl process is a two-phase transformation, where the amount of the CoAl–CO3phase decreases exponentially while that of the CoAl–Cl phase increases exponentially. Energy-dispersive X-ray spectroscopy (EDXS) studies of a partially chloride-exchanged CoAl–CO3LDH sample along within situXRPD data suggested that the individual particles in the CoAl–CO3sample are generally anion-exchanged with chloride one at a time. In contrast with the CoAl–CO3→ CoAl–Cl transformation, the XRPD data show that the reverse CoAl–Cl → CoAl–CO3process is a one-phase transformation. Rietveld refinements indicate that the occupancy factors of the carbon and oxygen sites of the carbonate group increase, while that of the chloride site decreases. In the CoAl–Cl → CoAl–NO3anion-exchange reaction, the XRPD patterns reveal the existence of two intermediate phases in addition to the initial CoAl–Cl and final CoAl–NO3phases. Thein situdata indicate that one of these intermediates is a mixed nitrate- and chloride-based LDH phase, where the disorder decreases as the nitrate content increases. The XRPD data of the partial CoAl–CO3→ CoAl–SO4anion-exchange reaction show that the process is a two-phase transformation involving a sulfate-containing LDH with a 1H polytype structure.

Reversible Anion Exchange Reaction in Solid Halide Perovskites and Its Implication in Photovoltaics

2015 ◽  
Vol 119 (48) ◽  
pp. 26883-26888 ◽  
Author(s):  
Guijun Li ◽  
Jacob Yuek-Lung Ho ◽  
Man Wong ◽  
Hoi Sing Kwok
Keyword(s):  
Exchange Reaction ◽  
Anion Exchange ◽  
Halide Perovskites ◽  
Anion Exchange Reaction
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