Fluorescence spectroscopy has become a key technique for the detection and elucidation of biological processes. In particular, cyanine dyes see widespread application as fluorescent probes. They have been used in DNA sequencing, immunoassays, agarose gel and capillary electrophoresis staining [1], DNA analysis in polymerization chain reactions [2,3], in flow cytometry [4], or as fluorescent probes for membrane fluidity [5,6] and membrane potential studies ...
