Photonic Crystal-Based Sensing and Imaging of Potassium Ions

URN to cite this document:: urn:nbn:de:bvb:355-epub-312975

Fenzl, Christoph ; Kirchinger, Michael ; Hirsch, Thomas ; Wolfbeis, Otto S.

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Date of publication of this fulltext: 06 Feb 2015 11:30

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Abstract

We report on a method for selective optical sensing and imaging of potassium ions using a sandwich assembly composed of layers of photonic crystals and an ion-selective membrane. This represents a new scheme for sensing ions in that an ionic strength-sensitive photonic crystal hydrogel layer is combined with a K+-selective membrane. The latter consists of plasticized poly(vinyl chloride) doped ...