Title

Visible Light Activated Ion Sensing Using A Photoacid Polymer For Calcium Detection

Abstract

Presented here is a sensing membrane consisting of a modified merocyanine photoacid polymer and a calcium ionophore in plasticized poly(vinyl chloride). This membrane is shown to actively exchange protons with calcium ions when switched ON after illumination at 470 nm, and the exchange can be followed by UV-vis spectroscopy. The sensing membrane shows no response in the ON state when calcium ions are absent. The limit of detection of the sensor is 5.0 × 10-4 M with an upper detection limit of 1.0 M. Thus, we demonstrate for the first time the use of a visible light activated, lipophilic photoacid polymer in an ion-sensing membrane for calcium ions, which highly discriminates potassium, sodium, and magnesium ions. © 2014 American Chemical Society.

Publication Date

7-1-2014

Publication Title

Analytical Chemistry

Volume

86

Issue

13

Number of Pages

6184-6187

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1021/ac500956j

Socpus ID

84903700918 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/84903700918

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