| abstract |
The invention relates to so-called laser-compatible NIR-marker dyes on a polymethine basis for use in optical, notably fluorescing-optical, methods of determination and detection, for example in medicine, pharmacy and the biological, materials and environmental sciences. The aim of the invention is to provide NIR-marker dyes on a polymethine basis with high photo- and storage-stability as well as high fluorescence yield, in which fluorescence can be excited as simply as possibly by means of laser radiation in the visible or NIR spectral range, notably using light of an argon, helium/neon or diode laser. According to the invention dyes on the basis of polymethines of the general formula (I) are used. |