Spectroscopic investigation on the effect of pairing anions in imidazolium-based ionic liquids on the J-aggregation of meso-tetrakis-(4-sulfonatophenyl)porphyrin in aqueous solution

2011 ◽  
Vol 131 (11) ◽  
pp. 2347-2351 ◽  
Author(s):  
Lili Liu ◽  
Weijun Jin ◽  
Lei Xi ◽  
Zhongjie Dong
Keyword(s):  
Aqueous Solution ◽  
Ionic Liquids ◽  
Spectroscopic Investigation

scholarly journals COSMO-RS prediction and experimental verification of 1,5-pentanediamine extraction from aqueous solution by ionic liquids

2020 ◽  
Author(s):  
Chenhao Jiang ◽  
Hongye Cheng ◽  
Zexian Qin ◽  
Ruizhuan Wang ◽  
Lifang Chen ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Ionic Liquids ◽  
Experimental Verification

Probing the Transport of Ionic Liquids in Aqueous Solution through Nanopores

2011 ◽  
Vol 2 (18) ◽  
pp. 2331-2336 ◽  
Author(s):  
Niraj Modi ◽  
Pratik Raj Singh ◽  
Kozhinjampara R. Mahendran ◽  
Robert Schulz ◽  
Mathias Winterhalter ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Ionic Liquids

Effect and mixing of counter anions at the surface of aqueous solution of imidazolium-based ionic liquids

2013 ◽  
Vol 427 ◽  
pp. 26-32 ◽  
Author(s):  
Huihui Li ◽  
Yosuke Imai ◽  
Takanori Takiue ◽  
Hiroki Matsubara ◽  
Makoto Aratono
Keyword(s):  
Aqueous Solution ◽  
Ionic Liquids

Self-organization of imidazolium ionic liquids in aqueous solution

2008 ◽  
Vol 329 (3) ◽  
pp. 125-133 ◽  
Author(s):  
Justyna Łuczak ◽  
Jan Hupka ◽  
Jorg Thöming ◽  
Christian Jungnickel
Keyword(s):  
Aqueous Solution ◽  
Ionic Liquids ◽  
Self Organization ◽  
Imidazolium Ionic Liquids

scholarly journals Aggregation Behavior and Antimicrobial Activity of Ester-Functionalized Imidazolium- and Pyridinium-Based Ionic Liquids in Aqueous Solution

Langmuir ◽  
2013 ◽  
Vol 29 (8) ◽  
pp. 2536-2545 ◽  
Author(s):  
M. Teresa Garcia ◽  
Isabel Ribosa ◽  
Lourdes Perez ◽  
Angeles Manresa ◽  
Francesc Comelles
Keyword(s):  
Aqueous Solution ◽  
Antimicrobial Activity ◽  
Ionic Liquids ◽  
Aggregation Behavior

scholarly journals Promising biocompatible hydrogels of crosslinked polyelectrolytes for biomedical applications

2017 ◽  
Vol 3 (2) ◽  
pp. 695-698
Author(s):  
Andreas Brietzke ◽  
Christian von der Ehe ◽  
Sabine Illner ◽  
Claudia Matschegewski ◽  
Niels Grabow ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Ionic Liquids ◽  
Cell Viability ◽  
Biomedical Applications ◽  
High Potential ◽  
Cell Viability Assay ◽  
Mouse Fibroblasts ◽  
Viability Assay ◽  
Intelligent Implant ◽  
L929 Mouse

AbstractFor the development of intelligent implant systems hydrogels (HG) from crosslinked ionic liquids feature a high potential to be utilised as a drug depot. Biocompatibility of the HGs is one key prerequisite for biomedical applications. HGs were polymerised from a variety of different ionic monomers based on methacrylate, methacrylamide, styrene or vinyl imidazolium derivatives in aqueous solution. N,N'-methylenebisacrylamide was used as crosslinker. CellQuanti-Blue™ Cell Viability Assay Kit was implemented to proof viability of L929 mouse fibroblasts. The predominant part of the HG eluates generated only a marginal reduction of less than 15% cell viability at 100% eluate concentration. This underlines the excellent suitability of these HGs for biomedical applications and revealed some promising candidates for the development of drug depots for implants.

An efficient and eco-friendly method for the thiol-Michael addition in aqueous solutions using amino acid ionic liquids (AAILs) as organocatalysts

2020 ◽  
Vol 92 (1) ◽  
pp. 97-106
Author(s):  
Roberto Figueroa Guíñez ◽  
José G. Santos ◽  
Ricardo A. Tapia ◽  
Jackson J. Alcazar ◽  
Margarita E. Aliaga ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Ionic Liquids ◽  
Amino Acid ◽  
Efficient Method ◽  
Michael Addition ◽  
Rate Constants ◽  
Michael Reaction ◽  
High Rate ◽  
Reusable Catalyst ◽  
Reaction Conditions

AbstractA series of amino-acid based ionic liquids (Bmim[AA]s) have been synthesized and evaluated as catalysts, in aqueous solution. The results of a kinetic study of the thiol-Michael reaction of L-Cysteine with trans-β-nitrostyrene demonstrated the advantages of using (Bmim[AA]s) as organocatalysts. The benefits include high rate constants; mild reaction conditions; and, a reusable catalyst, which leads to a simple and efficient method for these important kinds of reactions.

scholarly journals Highly Active Trifloaluminate Ionic Liquids as Recyclable Catalysts for Green Oxidation of 2,3,6-Trimethylphenol to Trimethyl-1,4-Benzoquinone

Catalysts ◽  
2020 ◽  
Vol 10 (12) ◽  
pp. 1469
Author(s):  
Piotr Latos ◽  
Agnieszka Siewniak ◽  
Natalia Barteczko ◽  
Sebastian Jurczyk ◽  
Sławomir Boncel ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Ionic Liquids ◽  
High Selectivity ◽  
Active Phase ◽  
Catalytic Performance ◽  
Reaction Parameters ◽  
Multiwalled Carbon ◽  
Highly Active ◽  
Recyclable Catalysts ◽  
Fold Excess

An effective method for the synthesis of 2,3,6-trimethyl-1,4-benzoquinone via the oxidation of 2,3,6-trimethylphenol as the key step in the in the preparation of vitamin E was presented. An aqueous solution of H2O2 was used as the oxidant and Lewis acidic trifloaluminate ionic liquids [emim][OTf]-Al(OTf)3, χAl(OTf)3 = 0.25 or 0.15 as catalysts. Trifloaluminate ionic liquids were synthesised by the simple reaction between 1-ethyl-3-methylimidazolium trifluoromethanesulfonate (triflate) [emim][OTf] and aluminium triflate used in sub-stoichiometric quantities. The influence of the reaction parameters on the reaction course, such as the amount and concentration of the oxidant, the amount of catalyst, the amount and the type of organic solvent, temperature, and the reaction time was investigated. Finally, 2,3,6-trimethyl-1,4-benzoquinone was obtained in high selectivity (99%) and high 2,3,6-trimethylphenol conversion (84%) at 70 °C after 2 h of oxidation using a 4-fold excess of 60% aqueous H2O2 and acetic acid as the solvent. The catalytic performance of trifloaluminate ionic liquids supported on multiwalled carbon nanotubes (loading of active phase: 9.1 wt.%) was also demonstrated. The heterogeneous ionic liquids not only retained their activity compared to the homogenous counterparts, but also proved to be a highly recyclable catalysts.

Sign in / Sign up

Export Citation Format

Share Document