Mesoscale Study of Proton Transport in Proton Exchange Membranes: Role of Morphology

2015 ◽  
Vol 119 (4) ◽  
pp. 1753-1762 ◽  
Author(s):  
Shule Liu ◽  
John Savage ◽  
Gregory A. Voth
Keyword(s):  
Proton Transport ◽  
Proton Exchange Membranes ◽  
Proton Exchange

Protein-Functionalized Proton Exchange Membranes

2004 ◽  
Author(s):  
Benjamin Chu ◽  
Dean Ho ◽  
Hyeseung Lee ◽  
Karen Kuo ◽  
Carlo Montemagno
Keyword(s):  
Proton Transport ◽  
Large Scale ◽  
Proton Exchange Membranes ◽  
Proton Exchange ◽  
Single Chain ◽  
Large Area ◽  
Langmuir Blodgett ◽  
Core Technology ◽  
Natural Lipid ◽  
Natural Cell

Protein-functionalized biomimetic membranes, based upon a triblock copolymer simulating a natural lipid bilayer in a single chain, serves as a core technology for applications in bioenergetics. Monolayers of block copolymer, which simulates the hydrophilic-hydrophobic-hydrophilic chain of a natural cell membrane, can be formed by Langmuir-Blodgett (LB) deposition and provides a favorable environment for protein refolding. Large-scale membrane formation is achieved using LB deposition on a variety of substrates, such as gold, quartz, silicon, and Nafion®. We have successfully inserted membrane proteins, such as the light-activated proton pump, bacteriorhodopsin (BR) and the pH/voltage-gateable porin, Outermembrane Protein F (OmpF), into large-area LB monolayers. We have also established sustained protein functionality in films through the measurement of light-activated proton transport.

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