Constructing Multicomponent Materials Containing Cavitands, and Phosphonium and Imidazolium Cations

2009 ◽  
Vol 9 (10) ◽  
pp. 4497-4503 ◽  
Author(s):  
Irene Ling ◽  
Yatimah Alias ◽  
Alexandre N. Sobolev ◽  
Colin L. Raston
Keyword(s):  
Imidazolium Cations ◽  
Multicomponent Materials

Constructing Multicomponent Materials Involving Inclusion of Mono- and Bis-Imidazolium Cations in Gadolinium(III)-p-sulfonatocalix[5]arene Coordination Networks

2013 ◽  
Vol 13 (5) ◽  
pp. 2025-2035 ◽  
Author(s):  
Irene Ling ◽  
Ramiz A. Boulos ◽  
Brian W. Skelton ◽  
Alexandre N. Sobolev ◽  
Yatimah Alias ◽  
...  
Keyword(s):  
Coordination Networks ◽  
Imidazolium Cations ◽  
Multicomponent Materials

Synthesis of RTH-Type Zeolites Using a Diverse Library of Imidazolium Cations

2015 ◽  
Vol 27 (10) ◽  
pp. 3756-3762 ◽  
Author(s):  
Joel E. Schmidt ◽  
Mark A. Deimund ◽  
Dan Xie ◽  
Mark E. Davis
Keyword(s):  
Imidazolium Cations

scholarly journals Phenolphthalein Anilide Based Poly(Ether Sulfone) Block Copolymers Containing Quaternary Ammonium and Imidazolium Cations: Anion Exchange Membrane Materials for Microbial Fuel Cell

Membranes ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 454
Author(s):  
Aruna Kumar Mohanty ◽  
Young-eun Song ◽  
Jung-rae Kim ◽  
Nowon Kim ◽  
Hyun-jong Paik
Keyword(s):  
Fuel Cell ◽  
Microbial Fuel Cell ◽  
Anion Exchange ◽  
Quaternary Ammonium ◽  
Anion Exchange Membrane ◽  
Anion Exchange Membranes ◽  
Good Thermal Stability ◽  
Imidazolium Cations ◽  
Membrane Morphology ◽  
Exchange Membrane

A class of phenolphthalein anilide (PA)-based poly(ether sulfone) multiblock copolymers containing pendant quaternary ammonium (QA) and imidazolium (IM) groups were synthesized and evaluated as anion exchange membrane (AEM) materials. The AEMs were flexible and mechanically strong with good thermal stability. The ionomeric multiblock copolymer AEMs exhibited well-defined hydrophobic/hydrophilic phase-separated morphology in small-angle X-ray scattering and atomic force microscopy. The distinct nanophase separated membrane morphology in the AEMs resulted in higher conductivity (IECw = 1.3–1.5 mequiv./g, σ(OH−) = 30–38 mS/cm at 20 °C), lower water uptake and swelling. Finally, the membranes were compared in terms of microbial fuel cell performances with the commercial cation and anion exchange membranes. The membranes showed a maximum power density of ~310 mW/m2 (at 0.82 A/m2); 1.7 and 2.8 times higher than the Nafion 117 and FAB-PK-130 membranes, respectively. These results demonstrated that the synthesized AEMs were superior to Nafion 117 and FAB-PK-130 membranes.

scholarly journals Design and Gas Separation Performance of Imidazolium Poly(ILs) Containing Multivalent Imidazolium Fillers and Crosslinking Agents

Polymers ◽  
2021 ◽  
Vol 13 (9) ◽  
pp. 1388
Author(s):  
Kathryn E. O’Harra ◽  
Emily M. DeVriese ◽  
Erika M. Turflinger ◽  
Danielle M. Noll ◽  
Jason E. Bara
Keyword(s):  
Small Molecules ◽  
Crosslinking Agent ◽  
Gas Permeation ◽  
Polymeric Matrix ◽  
Separation Performance ◽  
Ionic Polymers ◽  
Co2 Solubility ◽  
Imidazolium Cations ◽  
Crosslinking Agents ◽  
Gas Separation Performance

This work introduces a series of vinyl-imidazolium-based polyelectrolyte composites, which were structurally modified via impregnation with multivalent imidazolium-benzene ionic liquids (ILs) or crosslinked with novel cationic crosslinkers which possess internal imidazolium cations and vinylimidazolium cations at the periphery. A set of eight [C4vim][Tf2N]-based membranes were prepared via UV-initiated free radical polymerization, including four composites containing di-, tri-, tetra-, and hexa-imidazolium benzene ILs and four crosslinked derivatives which utilized tri- and tetra- vinylimidazolium benzene crosslinking agents. Structural and functional characterizations were performed, and pure gas permeation data were collected to better understand the effects of “free” ILs dispersed in the polymeric matrix versus integrated ionic crosslinks on the transport behaviors of these thin films. These imidazolium PIL:IL composites exhibited moderately high CO2 permeabilities (~20–40 Barrer), a 4–7× increase relative to corresponding neat PIL, with excellent selectivities against N2 or CH4. The addition of imidazolium-benzene fillers with increased imidazolium content were shown to correspondingly enhance CO2 solubility (di- < tri- < tetra- < hexa-), with the [C4vim][Tf2N]: [Hexa(Im+)Benz ][Tf2N] composite showing the highest CO2 permeability (PCO2 = 38.4 Barrer), while maintaining modest selectivities (αCO2/CH4 = 20.2, αCO2/N2 = 23.6). Additionally, these metrics were similarly improved with the integration of more ionic content bonded to the polymeric matrix; increased PCO2 with increased wt% of the tri- and tetra-vinylimidazolium benzene crosslinking agent was observed. This study demonstrates the intriguing interactions and effects of ionic additives or crosslinkers within a PIL matrix, revealing the potential for the tuning of the properties and transport behaviors of ionic polymers using ionic liquid-inspired small molecules.

15N NMR spectra of some ionic liquids based on 1,3-disubstituted imidazolium cations

2006 ◽  
Vol 44 (5) ◽  
pp. 521-523 ◽  
Author(s):  
Antonín Lyčka ◽  
Roman Doleček ◽  
Petr Šimûnek ◽  
Vladimír Macháček
Keyword(s):  
Ionic Liquids ◽  
Nmr Spectra ◽  
15N Nmr ◽  
Imidazolium Cations

Radiation Induced Redox Reactions and Fragmentation of Constituent Ions in Ionic Liquids. 2. Imidazolium Cations

2011 ◽  
Vol 115 (14) ◽  
pp. 3889-3902 ◽  
Author(s):  
Ilya A. Shkrob ◽  
Timothy W. Marin ◽  
Sergey D. Chemerisov ◽  
Jasmine L. Hatcher ◽  
James F. Wishart
Keyword(s):  
Ionic Liquids ◽  
Redox Reactions ◽  
Imidazolium Cations ◽  
Radiation Induced

Negative-ion emission during laser ablation of multicomponent materials

1994 ◽  
Vol 58 (1) ◽  
pp. 67-72 ◽  
Author(s):  
S. S. Alimpiev ◽  
M. E. Belov ◽  
V. V. Mlinsky ◽  
S. M. Nikiforov ◽  
V. I. Romanjuk
Keyword(s):  
Laser Ablation ◽  
Negative Ion ◽  
Ion Emission ◽  
Multicomponent Materials

Effects of substituents of imidazolium cations on the performance of dye-sensitized TiO2 solar cells

2008 ◽  
Vol 38 (12) ◽  
pp. 1647-1652 ◽  
Author(s):  
Kyung Mo Son ◽  
Man Gu Kang ◽  
R. Vittal ◽  
Jiwon Lee ◽  
Kang-Jin Kim
Keyword(s):  
Solar Cells ◽  
Imidazolium Cations ◽  
Dye Sensitized
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