Synthesis of Super Stable Triangulenium Dye

摘要

The super stabilized tris(dialkylamino)-azadioxatriangule-nium carbenium ion (A-ADOTA~+)4has been synthesizedand characterized. As a result of extended delocalization ofthe positive charge in the planar triangulenium system and thepresence of several strongly electron-donating groups, theA-ATOTA~+ion displays extreme cation stability with a pKR~+value close to 25. Furthermore the A-ATOTA~+ion showsexcellent dye properties with intense absorption at 458 nmand high fluorescence quantum yield.