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Related Experiment Video

Updated: Jun 28, 2026

Dynamic Electrochemical Measurement of Chloride Ions

Dynamic Electrochemical Measurement of Chloride Ions

Published on: February 5, 2016

Calixarene-based potentiometric ion-selective electrodes for silver.

K M O'Connor¹, G Svehla, S J Harris

¹Department of Chemistry, University College, Cork, Ireland.

|November 1, 1992

Summary

New calixarene derivatives show promise as ionophores for silver ion (Ag(I)) selective electrodes. One derivative demonstrated excellent sensitivity and selectivity, enabling accurate potentiometric titrations.

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Multi-analyte Biochip (MAB) Based on All-solid-state Ion-selective Electrodes (ASSISE) for Physiological Research

Published on: April 18, 2013

Area of Science:

Analytical Chemistry
Electrochemistry
Supramolecular Chemistry

Background:

Development of selective ion-sensing materials is crucial for chemical analysis.
Calixarene derivatives offer tunable properties for ion recognition.
Silver ion (Ag(I)) detection requires highly selective and sensitive electrodes.

Purpose of the Study:

To synthesize and evaluate novel calixarene derivatives as ionophores for Ag(I) detection.
To assess the performance of poly (vinyl chloride) (PVC) membrane electrodes incorporating these ionophores.
To investigate the applicability of the most effective electrode in potentiometric titrations.

Main Methods:

Synthesis of four lipophilic sulfur and/or nitrogen-containing calixarene derivatives.
Fabrication and electrochemical testing of Ag(I)-selective PVC membrane electrodes.
Evaluation of electrode sensitivity, linearity, and selectivity against various ions.
Testing of a membrane-coated glassy-carbon electrode.
Application in potentiometric titrations of halide ions.

Main Results:

All tested calixarene derivatives exhibited acceptable linear responses for Ag(I) detection.
One derivative displayed a notable response of 50 mV/dec within the 10(-4)-10(-1)M Ag(I) activity range.
This optimized ionophore demonstrated high selectivity over transition metals, sodium, and potassium ions.
The membrane-coated glassy-carbon electrode replicated the sensitivity and selectivity of the PVC membrane electrode.
The developed electrode successfully performed potentiometric titrations of halide ions.

Conclusions:

Lipophilic sulfur and/or nitrogen-containing calixarene derivatives are effective ionophores for Ag(I) sensing.
A specific calixarene derivative provides a highly sensitive and selective platform for Ag(I) detection.
The developed electrode is suitable for both direct potentiometric measurements and titrations of halide ions.