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Electrochemical Probing of Steric, Electrostatic and Hydrophobic Interactions of Large Cations in Polymers of Intrinsic Microporosity

Journal Article · · Journal of the Electrochemical Society
Porous membranes have been used for many applications, including separations in biotechnology, the food industry, water purification, and even energy storage devices. The benefit of polymers of intrinsic microporosity (PIMs) is their consistently sized nanopore channels. Inherent functionalities of the PIM structure not only create these channels but are also available for further modifications that can change the interactions of ions and molecules inside of the pore. Here we design solid state nanopores on which are drop-casted two different PIMs, functionalized with either a cyano group or a carboxylic acid. Ionic transport through the membranes is investigated based on pore size and charge-charge interactions, as well as steric and hydrophobic interactions. Achieving specific ion selectivity with easily processable porous membranes opens new avenues for water purification strategies and energy storage.
Research Organization:
Massachusetts Institute of Technology (MIT), Cambridge, MA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
SC0019112
OSTI ID:
1980867
Journal Information:
Journal of the Electrochemical Society, Journal Name: Journal of the Electrochemical Society Journal Issue: 2 Vol. 169; ISSN 0013-4651
Publisher:
IOP PublishingCopyright Statement
Country of Publication:
United States
Language:
English

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