Beilstein J. Org. Chem.2019,15, 2133–2141, doi:10.3762/bjoc.15.210
of the ethylthiol substituents. For the triangulenium derivatives significant fluorescence was observed (Φf = 0.1 to Φf = 0.3).
Keywords: acridinium dyes; aromatic nucleophilic substitution; fluorescent dyes; sulfur-functionalizeddyes; triangulenium dyes; triarylmethylium; Introduction
The design
and intensities? And how do they affect fluorescence quantum yields in these new dye systems? To the extent possible we will compare the new sulfur-functionalizeddyes to known analogues with -OR or -NR2 donor groups in the same positions.
The sulfur-substituted triarylmethylium dyes 1, 2 and 3
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Graphical Abstract
Figure 1:
Structures of some representative triangulenium dyes. a) Rhodamine/fluorescine-like derivatives wit...