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Potentiometry: Membrane Electrodes

Potentiometry: Membrane Electrodes

Membrane electrodes, also known as p-ion electrodes, use membranes that selectively interact with free analyte ions, generating a potential difference across the membrane. The resulting membrane potential, known as the asymmetry potential, is not zero even when analyte concentrations on both sides of the membrane are equal. The membrane's response is typically not selective to a single analyte but proportional to the concentration of all ions in the sample solution capable of interacting at...

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Cell membranes are composed of phospholipids, proteins, and carbohydrates loosely attached to one another through chemical interactions. Molecules are generally able to move about in the plane of the membrane, giving the membrane its flexible nature called fluidity. Two other features of the membrane contribute to membrane fluidity: the chemical structure of the phospholipids and the presence of cholesterol in the membrane.

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Related Experiment Video

Updated: May 10, 2025

Proof-of-Concept for Gas-Entrapping Membranes Derived from Water-Loving SiO2/Si/SiO2 Wafers for Green Desalination

Proof-of-Concept for Gas-Entrapping Membranes Derived from Water-Loving SiO2/Si/SiO2 Wafers for Green Desalination

Published on: March 1, 2020

Gas-Responsive Smart Membrane Separation.

Yang-Yang Wang¹, Yingjie Tang¹, Qiang Yan¹

¹State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai, 200433, China.

Chemistry (Weinheim an Der Bergstrasse, Germany)

|April 23, 2025

Summary

This summary is machine-generated.

This review explores gas-responsive membranes, a novel smart material for separation science. These membranes offer clean, non-destructive, and easy-to-handle advantages for advanced applications.

Keywords:

advanced materials gas‐responsive membrane polymer smart separation

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Last Updated: May 10, 2025

Proof-of-Concept for Gas-Entrapping Membranes Derived from Water-Loving SiO2/Si/SiO2 Wafers for Green Desalination

Proof-of-Concept for Gas-Entrapping Membranes Derived from Water-Loving SiO2/Si/SiO2 Wafers for Green Desalination

Published on: March 1, 2020

Preparation of Light-responsive Membranes by a Combined Surface Grafting and Postmodification Process

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Published on: March 21, 2014

Electrophoretic Crystallization of Ultrathin High-performance Metal-organic Framework Membranes

Electrophoretic Crystallization of Ultrathin High-performance Metal-organic Framework Membranes

Published on: August 16, 2018

Area of Science:

Membrane separation science
Smart materials development

Background:

Cell membranes exhibit self-regulation, inspiring artificial membrane design.
Responsive artificial membranes with smart sieving functions are crucial in separation science.

Purpose of the Study:

To review recent advancements in gas-responsive membranes.
To outline fabrication strategies and highlight applications of these smart membranes.

Main Methods:

Summarizing recent breakthroughs in gas-responsive membrane development.
Reviewing novel strategies for membrane fabrication.
Highlighting advanced applications.

Main Results:

Gas as a stimulus offers biocompatibility, cleanliness, ease-of-handling, and nondestructive advantages.
Gas-responsive membranes are promising smart separation materials.
Applications include controlled cargo release, substance separation, oil-water separation, and self-cleaning.

Conclusions:

Gas-responsive membranes represent a significant advancement in smart separation materials.
Future research directions and opportunities in this field are identified.