Synthesis and Characterization of 9-(Cycloheptatrienylidene)fluorene Derivatives: Acid-Triggered “Switch on” of Fluorophores
作者:Zixing Wang、Yajun Xing、Hongxia Shao、Ping Lu、William P. Weber
DOI:10.1021/ol047847a
日期:2005.1.1
A series of 9-(cycloheptatrienylidene)fluorene derivatives were synthesized in good yields through the Suzuki or Sonogashira cross-coupling reactions. Fluorescence "off-on" behaviors of these compounds were investigated on the basis of variable acid concentrations. These compounds were shown to be acid-sensing fluorophores with utility as indicators in acidic environments.