Beilstein J. Org. Chem.2019,15, 2133–2141, doi:10.3762/bjoc.15.210
Marco Santella Eduardo Della Pia Jakob Kryger Sorensen Bo W. Laursen Nano-Science Center and Department of Chemistry, University of Copenhagen, Universitetsparken 5, 2100 Copenhagen Ø, Denmark 10.3762/bjoc.15.210 Abstract Trianguleniumdyes functionalized with one, two or three ethylthiol
bridges leading to sulfur-functionalized acridinium, xanthenium or trianguleniumdyes. For all the dye classes the sulfur functionalities are found to lead to intensely absorbing dyes in the visible range (470 to 515 nm), quite similar to known analogous dye systems with dialkylamino donor groups in place
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-functionalized dyes; trianguleniumdyes; triarylmethylium; Introduction
The design
PDF
Graphical Abstract
Figure 1:
Structures of some representative triangulenium dyes. a) Rhodamine/fluorescine-like derivatives wit...