Novel bifunctional fluorophores with the dual target detection of Al3+ and Fe3+ cations were synthesized in yields up to 70% via bridge-functionalization of calix[4]arenes with the 1,3,7-triazapyrene scaffold.
A convenient multistep synthetic methodology to afford prospective push‐pull fluorophores based on the N(2)‐fluoroaryl‐1,2,3‐triazole scaffold as valuable functional blocks in the design of blue‐emitting organic materials is reported. The strategy includes five synthetic steps with yields of 60–99% at each stage. The obtained photoactive molecules, 2‐fluoroaryl‐5‐aryl‐4‐methyl‐1,2,3‐triazoles, were found to possess a blue‐violet emission in the range of λ=330–440 nm and the absolute quantum yield of >99% in solvents of different polarities. The electron transfer mechanistic features in the excited states for the developed N(2)‐fluoroaryl‐1,2,3‐triazoles compared to the 1,2,3‐triazoles‐1‐oxide analogues were also studied by using DFT and CIS calculations.
Mono- and bis-2-thienyl-substituted 1,3,7-triazapyrenes have first been synthesized via BF3-mediated C-H/C-Li coupling of 1,3,7-triazapyrene with 2-thienyllithium in 33 and 51% yields, respectively. The photophysical properties for these polycyclic azaaromatics have...
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.