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Title

Visible light induced photoacid generation within plasticized PVC membranes for copper (II) ion extraction
Authors
Xie, Xiaojiang
Mistlberger, Günter
Bakker, Eric
Published in Sensors and Actuators. B, Chemical. 2014, vol. 204, p. 807-810
Abstract We present here an approach for light induced generation of lipophilic cation-exchangers in plasticized PVC membranes. Using camphorquinone as photosensitizer, a lipophilic cationic photoacid generator can produce protons under visible light illumination and endow the polymeric membrane with ion-exchanging property. After light illumination, the membrane containing a Cu2+ ionophore, is able to extract Cu2+ ions from the contacting aqueous solution. The acid generation upon light irradiation is relatively fast (ca. 100 s). The Cu2+ extraction process was imaged with fluorescence microscopy using Calcein, a fluorescence indicator whose fluorescence is quenched by Cu2+. Such a technique may form a new platform for light triggered ion concentration perturbation.
Keywords Photoacid generator — Copper — Camphorquinone — PVC
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Other version: https://linkinghub.elsevier.com/retrieve/pii/S0925400514010107
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Faculté des sciences / Section de chimie et biochimie / Département de chimie minérale, analytique et appliquée
Citation
(ISO format) 		XIE, Xiaojiang, MISTLBERGER, Günter, BAKKER, Eric. Visible light induced photoacid generation within plasticized PVC membranes for copper (II) ion extraction. In: Sensors and Actuators. B, Chemical, 2014, vol. 204, p. 807-810. doi: 10.1016/j.snb.2014.08.041 https://archive-ouverte.unige.ch/unige:144150

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Deposited on : 2020-11-04

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