Tuning and Coupling Irreversible Electroosmotic Water Flow in Ionic Diodes: Methylation of an Intrinsically Microporous Polyamine (PIM-EA-TB)

Victor Li; John Lowe; Philip Fletcher; Mariolino Carta; Neil Mckeown; Frank Marken

doi:10.1021/acsami.3c10220

Tuning and Coupling Irreversible Electroosmotic Water Flow in Ionic Diodes: Methylation of an Intrinsically Microporous Polyamine (PIM-EA-TB)

Victor Li, John Lowe, Philip Fletcher, Mariolino Carta, Neil Mckeown, Frank Marken

Research output: Contribution to journal › Article › peer-review

6 Citations (SciVal)

Abstract

Molecularly rigid polymers with internal charges (positive charges induced by amine methylation) allow electroosmotic water flow to be tuned by adjusting the charge density (the degree of methylation). Here, a microporous polyamine (PIM-EA-TB) is methylated to give a molecularly rigid anion conductor. The electroosmotic drag coefficient (the number of water molecules transported per anion) is shown to increase with a lower degree of methylation. Net water transport (without charge flow) in a coupled anionic diode circuit is demonstrated based on combining low and high electroosmotic drag coefficient materials. The AC-electricity driven net process offers water transport (or transport of other neutral species e.g. drugs) with net zero ion transport and without driver electrode side reactions.

Original language	English
Pages (from-to)	42369-42377
Journal	ACS Applied Materials and Interfaces
Volume	15
Issue number	36
Early online date	28 Aug 2023
DOIs	https://doi.org/10.1021/acsami.3c10220
Publication status	Published - 13 Sept 2023

Bibliographical note

Funding Information:
F.M. thanks for the initial financial support by the EPSRC (EP/K004956/1).

Publisher Copyright:
© 2023 The Authors. Published by American Chemical Society

Funding

F.M. thanks for the initial financial support by the EPSRC (EP/K004956/1).

Keywords

coupled diodes
electroosmosis
ionomer membranes
rectification
voltammetry

ASJC Scopus subject areas

General Materials Science

Access to Document

10.1021/acsami.3c10220Licence: CC BY

Cite this

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title = "Tuning and Coupling Irreversible Electroosmotic Water Flow in Ionic Diodes: Methylation of an Intrinsically Microporous Polyamine (PIM-EA-TB)",

abstract = "Molecularly rigid polymers with internal charges (positive charges induced by amine methylation) allow electroosmotic water flow to be tuned by adjusting the charge density (the degree of methylation). Here, a microporous polyamine (PIM-EA-TB) is methylated to give a molecularly rigid anion conductor. The electroosmotic drag coefficient (the number of water molecules transported per anion) is shown to increase with a lower degree of methylation. Net water transport (without charge flow) in a coupled anionic diode circuit is demonstrated based on combining low and high electroosmotic drag coefficient materials. The AC-electricity driven net process offers water transport (or transport of other neutral species e.g. drugs) with net zero ion transport and without driver electrode side reactions.",

keywords = "coupled diodes, electroosmosis, ionomer membranes, rectification, voltammetry",

author = "Victor Li and John Lowe and Philip Fletcher and Mariolino Carta and Neil Mckeown and Frank Marken",

note = "Funding Information: F.M. thanks for the initial financial support by the EPSRC (EP/K004956/1). Publisher Copyright: {\textcopyright} 2023 The Authors. Published by American Chemical Society",

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AU - Lowe, John

AU - Fletcher, Philip

AU - Carta, Mariolino

AU - Mckeown, Neil

AU - Marken, Frank

PY - 2023/9/13

Y1 - 2023/9/13

N2 - Molecularly rigid polymers with internal charges (positive charges induced by amine methylation) allow electroosmotic water flow to be tuned by adjusting the charge density (the degree of methylation). Here, a microporous polyamine (PIM-EA-TB) is methylated to give a molecularly rigid anion conductor. The electroosmotic drag coefficient (the number of water molecules transported per anion) is shown to increase with a lower degree of methylation. Net water transport (without charge flow) in a coupled anionic diode circuit is demonstrated based on combining low and high electroosmotic drag coefficient materials. The AC-electricity driven net process offers water transport (or transport of other neutral species e.g. drugs) with net zero ion transport and without driver electrode side reactions.

AB - Molecularly rigid polymers with internal charges (positive charges induced by amine methylation) allow electroosmotic water flow to be tuned by adjusting the charge density (the degree of methylation). Here, a microporous polyamine (PIM-EA-TB) is methylated to give a molecularly rigid anion conductor. The electroosmotic drag coefficient (the number of water molecules transported per anion) is shown to increase with a lower degree of methylation. Net water transport (without charge flow) in a coupled anionic diode circuit is demonstrated based on combining low and high electroosmotic drag coefficient materials. The AC-electricity driven net process offers water transport (or transport of other neutral species e.g. drugs) with net zero ion transport and without driver electrode side reactions.

KW - coupled diodes

KW - electroosmosis

KW - ionomer membranes

KW - rectification

KW - voltammetry

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Tuning and Coupling Irreversible Electroosmotic Water Flow in Ionic Diodes: Methylation of an Intrinsically Microporous Polyamine (PIM-EA-TB)

Abstract

Bibliographical note

Funding

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Applying Long-Lived Metastable States in Switchable Functionality via Kinetic Control of Molecular Assembly

Cite this

Tuning and Coupling Irreversible Electroosmotic Water Flow in Ionic Diodes: Methylation of an Intrinsically Microporous Polyamine (PIM-EA-TB)

Abstract

Bibliographical note

Funding

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Projects

Applying Long-Lived Metastable States in Switchable Functionality via Kinetic Control of Molecular Assembly

Cite this