Engineering of ion channels topology in self-assembled wedge-shaped amphiphiles by combination of temperature and solvent vapor treatment

2016 ◽  
Author(s):  
Kseniia Grafskaia ◽  
Boris Zimka ◽  
Xiaomin Zhu ◽  
Denis Anokhin ◽  
Dimitri Ivanov
Keyword(s):  
Ion Channels ◽  
Solvent Vapor ◽  
Self Assembled ◽  
Vapor Treatment

scholarly journals Selective Proton-Mediated Transport by Electrogenic K+-Binding Macrocycles

Chemistry ◽  
2020 ◽  
Vol 2 (1) ◽  
pp. 11-21
Author(s):  
Yu-Hao Li ◽  
Shao-Ping Zheng ◽  
Dawei Wang ◽  
Mihail Barboiu
Keyword(s):  
Ion Channels ◽  
Therapeutic Agents ◽  
K Channel ◽  
Transport Activity ◽  
Selective Activation ◽  
K Channels ◽  
High K ◽  
Carbonyl Cyanide ◽  
Self Assembled ◽  
K Transport

Synthetic K+-binding macrocycles have potential as therapeutic agents for diseases associated with KcsA K+ channel dysfunction. We recently discovered that artificial self-assembled n-alkyl-benzoureido-15-crown-5-ether form selective ion-channels for K+ cations, which are highly preferred to Na+ cations. Here, we describe an impressive selective activation of the K+ transport via electrogenic macrocycles, stimulated by the addition of the carbonyl cyanide-4-(trifluoromethoxy) phenylhydrazone (FCCP) proton carrier. The transport performances show that both the position of branching or the size of appended alkyl arms favor high transport activity and selectivity SK+/Na+ up to 48.8, one of the best values reported up to now. Our study demonstrates that high K+/Na+ selectivity obtained with natural KcsA K+ channels is achievable using simpler artificial macrocycles displaying constitutional functions.

Highly Anisotropic P3HT Film Fabricated via Epitaxy on an Oriented Polyethylene Film and Solvent Vapor Treatment

Langmuir ◽  
2019 ◽  
Vol 35 (24) ◽  
pp. 7841-7847 ◽  
Author(s):  
Jiali Li ◽  
Meiling Xue ◽  
Ning Xue ◽  
Huihui Li ◽  
Lei Zhang ◽  
...  
Keyword(s):  
Polyethylene Film ◽  
P3ht Film ◽  
Solvent Vapor ◽  
Vapor Treatment ◽  
Oriented Polyethylene

Dewetting of polymethyl methacrylate on the patterned elastomer substrate by solvent vapor treatment

Polymer ◽  
2007 ◽  
Vol 48 (12) ◽  
pp. 3574-3583 ◽  
Author(s):  
Rubo Xing ◽  
Chunxia Luo ◽  
Zhe Wang ◽  
Yanchun Han
Keyword(s):  
Polymethyl Methacrylate ◽  
Solvent Vapor ◽  
Vapor Treatment

Giant Artificial Ion Channels Formed by Self-Assembled, Cationic Rigid-Rodβ-Barrels

2000 ◽  
Vol 112 (11) ◽  
pp. 2031-2034 ◽  
Author(s):  
Bodo Baumeister ◽  
Naomi Sakai ◽  
Stefan Matile
Keyword(s):  
Ion Channels ◽  
Self Assembled

Self-Assembled Artificial Transmembrane Ion Channels

2007 ◽  
pp. 1-15
Author(s):  
Mary S. Gin ◽  
Emily G. Schmidt ◽  
Pinaki Talukdar
Keyword(s):  
Ion Channels ◽  
Self Assembled

Conductor‐Free Anode of Transition Metal Dichalcogenide Nanosheets Self‐Assembled with Graft Polymer Li‐Ion Channels

2020 ◽  
pp. 2003243
Author(s):  
Chanho Park ◽  
Young Hwan Kim ◽  
Hyeokjung Lee ◽  
Han Sol Kang ◽  
Taebin Kim ◽  
...  
Keyword(s):  
Ion Channels ◽  
Transition Metal ◽  
Transition Metal Dichalcogenide ◽  
Graft Polymer ◽  
Li Ion ◽  
Self Assembled

scholarly journals Improving Performance of Electrospun Nylon 6,6 Nanofiber Membrane for Produced Water Filtration via Solvent Vapor Treatment

Polymers ◽  
2019 ◽  
Vol 11 (12) ◽  
pp. 2117 ◽  
Author(s):  
Nur Syakinah Abd Halim ◽  
Mohd Dzul Hakim Wirzal ◽  
Muhammad Roil Bilad ◽  
Nik Abdul Hadi Md Nordin ◽  
Zulfan Adi Putra ◽  
...  
Keyword(s):  
Produced Water ◽  
Separation Performance ◽  
Electrospun Nanofiber ◽  
Nanofiber Membrane ◽  
Solvent Vapor ◽  
Acid Vapor ◽  
Dispersed Oil ◽  
Nylon 6,6 ◽  
Highly Porous ◽  
Vapor Treatment

Electrospun nanofiber membrane (NFM) has a high potential to be applied as a filter for produced water treatment due to its highly porous structure and great permeability. However, it faces fouling issues and has low mechanical properties, which reduces the performance and lifespan of the membrane. NFM has a low integrity and the fine mat easily detaches from the sheet. In this study, nylon 6,6 was selected as the polymer since it offers great hydrophilicity. In order to increase mechanical strength and separation performance of NFM, solvent vapor treatment was implemented where the vapor induces the fusion of fibers. The fabricated nylon 6,6 NFMs were treated with different exposure times of formic acid vapor. Results show that solvent vapor treatment helps to induce the fusion of overlapping fibers. The optimum exposure time for solvent vapor is 5 h to offer full retention of dispersed oil (100% of oil rejection), has 62% higher in tensile strength (1950 MPa) compared to untreated nylon 6,6 NFM (738 MPa), and has the final permeability closest to the untreated nylon 6,6 NFM (733 L/m2.h.bar). It also took more time to get fouled (220 min) compared to untreated NFM (160 min).

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