Journal article
Visible light induced photoacid generation within plasticized PVC membranes for copper (II) ion extraction
Sensors and Actuators B: Chemical, Vol.204, pp.807-810
2014
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.
Details
- Title
- Visible light induced photoacid generation within plasticized PVC membranes for copper (II) ion extraction
- Authors
- Xiaojiang Xie (Author) - University of Geneva, SwitzerlandGunter Mistlberger (Author) - Graz University of Technology, AustriaEric Bakker (Author) - University of Geneva, Switzerland
- Publication details
- Sensors and Actuators B: Chemical, Vol.204, pp.807-810
- Publisher
- Elsevier S.A.
- Date published
- 2014
- DOI
- 10.1016/j.snb.2014.08.041
- ISSN
- 0925-4005
- Organisation Unit
- University of the Sunshine Coast, Queensland
- Language
- English
- Record Identifier
- 99448961102621
- Output Type
- Journal article
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web Of Science research areas
- Chemistry, Analytical
- Electrochemistry
- Instruments & Instrumentation