Tuning the solubility of polymerized ionic liquids by simple anion-exchange reactions

2003 ◽  
Vol 42 (1) ◽  
pp. 208-212 ◽  
Author(s):  
Rebeca Marcilla ◽  
J. Alberto Blazquez ◽  
Javier Rodriguez ◽  
Jose A. Pomposo ◽  
David Mecerreyes
Keyword(s):  
Ionic Liquids ◽  
Anion Exchange ◽  
Exchange Reactions

Hydroxometalates from Anion Exchange Reactions of [BF4]−based Ionic Liquids: Formation of [M(OH)6)]2−(M = Ti, Zr) and [Zr(OH)5]−

2010 ◽  
Vol 22 (24) ◽  
pp. 6518-6523 ◽  
Author(s):  
Hechun Lin ◽  
Peter W. de Oliveira ◽  
Volker Huch ◽  
Michael Veith
Keyword(s):  
Ionic Liquids ◽  
Anion Exchange ◽  
Exchange Reactions

Properties of ionic liquids on Au surfaces: non-conventional anion exchange reactions with carbonate

2011 ◽  
Vol 47 (38) ◽  
pp. 10644 ◽  
Author(s):  
Mathieu Ratel ◽  
Mathieu Branca ◽  
Julien Breault-Turcot ◽  
Sandy Shuo Zhao ◽  
Pierre Chaurand ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Anion Exchange ◽  
Exchange Reactions

Anion-exchange reactions of layered double hydroxides

1990 ◽  
Vol 29 (26) ◽  
pp. 5201-5207 ◽  
Author(s):  
Martina Meyn ◽  
Klaus Beneke ◽  
Gerhard Lagaly
Keyword(s):  
Anion Exchange ◽  
Layered Double Hydroxides ◽  
Exchange Reactions ◽  
Double Hydroxides

Resolution and reconstitution of anion exchange reactions

1990 ◽  
Vol 326 (1236) ◽  
pp. 437-454 ◽  
Keyword(s):  
Anion Exchange ◽  
Membrane Surface ◽  
Exchange Reactions ◽  
Alpha Helices ◽  
Common Structure ◽  
Physiological Properties ◽  
Secondary Carriers ◽  
Hydrophilic Loop ◽  
Primary Substrate

To illustrate the emerging class of anion exchange proteins in bacteria, this article discusses the biochemical and physiological properties of phosphate (Pi)-linked antiporters that accept glucose 6-phosphate (G6P) as their primary substrate. These systems have a bifunctional active site that binds a pair of negative charges, whether presented as a single divalent anion or a pair of monovalent substrates. Exchange stoichiometry therefore .moves between the limits of 2:1 and 2:2 according to the ratio of mono- and divalent substrates at either membrane surface. This predicts an interesting reaction sequence in vivo because internal pH is more alkaline than external pH; one expects an asymmetric exchange as a pair of monovalent G6P anions moves against a single divalent G6P, and in this way an otherwise futile selfexchange of G6P can result in a net inward flux driven (indirectly) by the pH gradient. Despite their biochemical complexity, at a molecular level the Pi-linked antiporters resemble other secondary carriers. Indeed, the current listing of nearly two dozen such proteins suggests a structural theme in which the minimal functional unit has two sets of six transmembrane alpha helices separated by a central hydrophilic loop. Presently described examples show that this topology can derive from either a single protein or from pairs of identical subunits. The finding of this common structure makes it possible to begin building more detailed structural models that have more general implications.

Tuning the emission spectrum of highly stable cesium lead halide perovskite nanocrystals through poly(lactic acid)-assisted anion-exchange reactions

2018 ◽  
Vol 6 (20) ◽  
pp. 5375-5383 ◽  
Author(s):  
Longshi Rao ◽  
Yong Tang ◽  
Caiman Yan ◽  
Jiasheng Li ◽  
Guisheng Zhong ◽  
...  
Keyword(s):  
Lactic Acid ◽  
Emission Spectrum ◽  
Anion Exchange ◽  
Poly Lactic Acid ◽  
Exchange Reactions ◽  
Perovskite Nanocrystals ◽  
Stable Cesium ◽  
Halide Perovskite ◽  
Lead Halide

Emission tunable CsPbX3 NCs with high QY and stability were synthesized via PLA-assisted anion-exchange reactions.

scholarly journals Synthesis of Quaternary Ammonium Room-Temperature Ionic Liquids and their Application in the Dissolution of Cellulose

2019 ◽  
Vol 9 (9) ◽  
pp. 1750 ◽  
Author(s):  
Yao-Hsuan Tseng ◽  
Yu-Yin Lee ◽  
Shih-Hsun Chen
Keyword(s):  
Ionic Liquids ◽  
Quaternary Ammonium ◽  
Room Temperature ◽  
Room Temperature Ionic Liquids ◽  
Regenerated Cellulose ◽  
Exchange Reactions ◽  
Cellulose Films ◽  
Structural Regularity ◽  
Rapid Dissolution ◽  
Regenerated Cellulose Films

In this work, several kinds of quaternary ammonium-based room-temperature ionic liquids (QA RTILs) are synthesized by alkylation and ion-exchange reactions for the rapid dissolution of cellulose. The applications of cellulose materials have been limited due to their poor solubility in conventional organic solvents, because of a high degree of structural regularity and a large number of hydrogen bonds. The prepared ionic liquids were identified by nuclear magnetic resonance, elemental analysis, and liquid chromatography-mass spectrometry. The results indicated that N,N,N-triethylhexan-1-aminium acetate (N6222OAc), tetrahexylammonium acetate (N6666OAc), and N,N,N,N′,N′,N′-hexaethyldecane-1,10-diaminium acetate (C10(N222OAc)2) exhibited good cellulose-dissolution without any pretreatment. The regenerated cellulose films with a low degree of crystallization of the cellulose II phase were also prepared easily in this process using N6222OAc due to its polar and small cation. These QA RTILs can be used as non-derivatizing solvents for cellulose and can also be easily recycled because of their thermostable and nonvolatile properties.

Hollow BiVO4/Bi2S3 cruciate heterostructures with enhanced visible-light photoactivity

2019 ◽  
Vol 9 (1) ◽  
pp. 182-187 ◽  
Author(s):  
Chen Zhuang ◽  
Lanqin Tang ◽  
Zhentao Yu ◽  
Tianxiao Peng ◽  
Yongcai Zhang ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Anion Exchange ◽  
Light Illumination ◽  
Photocurrent Response ◽  
Exchange Reactions ◽  
Visible Light Illumination

Unique BiVO4/Bi2S3 cruciate hollow heterostructures are successfully constructed via anion exchange reactions using cruciate BiVO4 as templates and precursors. The hollow heterostructures exhibit excellent enhanced photocurrent response and photocatalytic activity for reduction of Cr6+ under visible-light illumination.

scholarly journals Liquid phase exfoliation of carbonate-intercalated layered double hydroxides

2019 ◽  
Vol 55 (23) ◽  
pp. 3315-3318 ◽  
Author(s):  
Jose A. Carrasco ◽  
Andrew Harvey ◽  
Damien Hanlon ◽  
Vicent Lloret ◽  
Dave McAteer ◽  
...  
Keyword(s):  
Liquid Phase ◽  
Anion Exchange ◽  
Layered Double Hydroxides ◽  
Exchange Reactions ◽  
Liquid Phase Exfoliation ◽  
Double Hydroxides

Direct exfoliation of carbonate layered double hydroxides has been achieved by using a novel horn-probe sonic tip, avoiding the development of time-consuming anion-exchange reactions.

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