Several new fluorone derivatives including 2,4,5,7-tetraiodo-6-hydroxy-3-fluorone, 2,4,5,7-tetrabromo-6-hydroxy-3-fluorone, and 2,4-diiodo-6-methoxy-3-fluorone were synthesized and their spectral and photophysical properties investigated.
Several new fluorone derivatives including 2,4,5,7-tetraiodo-6-hydroxy-3-fluorone, 2,4,5,7-tetrabromo-6-hydroxy-3-fluorone, and 2,4-diiodo-6-methoxy-3-fluorone were synthesized and their spectral and photophysical properties investigated.
Adsorption and photochemical behaviors of the novel cationic xanthene derivative on the clay surface
Novel tetra-cationic xanthene derivative (Flu) was synthesized. Its adsorption and photochemicalbehaviors on the clay surface were investigated. Fluorescence quantum yield (ϕf) and fluorescence lifetime were 0.50 and 2.9 ns for Flu/clay complex. ϕf of Flu was enough high (>0.1) even at high density conditions (0.080 molecules nm−2). It is supposed that the strong interaction between clay and Flu by