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International Journal of Environmental Analytical Chemistry Volume 85, 2005 - Issue 9-11: Proceedings of the 6th Workshop on Biosensors and BioAnalytical k-Techniques in Environmental and Clinical Analysis Guest Editor: Roberto Pilloton Part 1: DNA Chips, k-Systems and Nanotechnologies, and Enzyme-Based Biosensors
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Original Articles

Fluorescence studies of crown ether complexes – solvent effects regarding the inclusion properties of host–guest sensor complexes

Karina Schönefeld University of Applied Sciences Jena, Faculty of Medical Engineering, Carl-Zeiss-Promenade 2, D-07745 Jena, Germany
,
Anne Barann University of Applied Sciences Jena, Faculty of Medical Engineering, Carl-Zeiss-Promenade 2, D-07745 Jena, Germany
,
Kerstin Vogel University of Applied Sciences Jena, Faculty of Medical Engineering, Carl-Zeiss-Promenade 2, D-07745 Jena, Germany
,
Karl-Heinz Feller University of Applied Sciences Jena, Faculty of Medical Engineering, Carl-Zeiss-Promenade 2, D-07745 Jena, GermanyCorrespondence[email protected]
,
Denise Kunze University of Applied Sciences Jena, Faculty of Medical Engineering, Carl-Zeiss-Promenade 2, D-07745 Jena, Germany
,
Petra Müller Freiberg University of Mining and Technology, Institute of Organic Chemistry, Leipziger Strasse 29, D-09596 Freiberg, Germany
&
Edwin Weber Freiberg University of Mining and Technology, Institute of Organic Chemistry, Leipziger Strasse 29, D-09596 Freiberg, Germany
 show all
Pages 655-663 | Received 05 Oct 2004, Accepted 28 Jan 2005, Published online: 25 Jan 2007
 
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Abstract

Absorption and fluorescence of a crown ether complex, benzo-15-crown-5 coupled with a fluorescent anthracene unit (AEB), was studied in dependence on the solvent polarity and pH value. Whereas the absorption spectrum is only very weak solvent dependent, the fluorescence spectra are very dependent upon the polarity and the pH of the solvent with spectral changes of about 60 nm. Additional strong fluorescence quenching of the crown ether–anthracene complex in comparison to the pure anthracene was found. The results are discussed in the framework of the dual luminescence concept of Visser and Varma.

Acknowledgement

This work has been done under the project “ChemoChips” 16IN0217 sponsored by the German Federal Ministry of Economics and Labour.

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