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Hecht M, Kraus W, Rurack K. A highly fluorescent pH sensing membrane for the alkaline pH range incorporating a BODIPY dye. Analyst. 2012;138(1):325-32doi: 10.1039/c2an35860c.
Hecht, M., Kraus, W., & Rurack, K. (2013). A highly fluorescent pH sensing membrane for the alkaline pH range incorporating a BODIPY dye. The Analyst, 138(1), 325-32. https://doi.org/10.1039/c2an35860c
Hecht, Mandy, et al. "A highly fluorescent pH sensing membrane for the alkaline pH range incorporating a BODIPY dye." The Analyst vol. 138,1 (2013): 325-32. doi: https://doi.org/10.1039/c2an35860c
Hecht M, Kraus W, Rurack K. A highly fluorescent pH sensing membrane for the alkaline pH range incorporating a BODIPY dye. Analyst. 2013 Jan 07;138(1):325-32. doi: 10.1039/c2an35860c. Epub 2012 Oct 23. PMID: 23091817.
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Analyst. 2013 Jan 07;138(1):325-32. doi: 10.1039/c2an35860c. Epub 2012 Oct 23.

A highly fluorescent pH sensing membrane for the alkaline pH range incorporating a BODIPY dye.

The Analyst

Mandy Hecht, Werner Kraus, Knut Rurack

Affiliations

  1. Div. 1.9 Sensor Materials, BAM Federal Institute for Materials Research and Testing, Richard-Willstätter-Str. 11, D-12489 Berlin, Germany.

PMID: 23091817 DOI: 10.1039/c2an35860c

Abstract

A robust and re-usable dipstick-type fluorescent pH sensor for the alkaline pH range was developed by embedding a brightly fluorescent boron-dipyrromethene (BODIPY) dye bearing an acidic phenol moiety into a polyurethane matrix immobilized on a 3D epoxy-functionalized polymer support. The sensor strip has a dynamic working range of pH 10.0-13.1, i.e., operates in strongly basic media where pH glass electrodes can suffer from alkaline errors, and tolerates a high electrolyte background such as simulated seawater and sewage. This work describes the preparation of the sensing material and provides insight into the features that a hydrogel sensing membrane can bestow on an embedded pH-responsive dye by means of optical spectroscopic investigations.

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