Fluorescent metal ion indicators based on benzoannelated crown systems: a green fluorescent indicator for intracellular sodium ions
作者:Vladimir V. Martin、Anca Rothe、Kyle R. Gee
DOI:10.1016/j.bmcl.2005.02.017
日期:2005.4
The synthesis and metal binding properties of cation-sensitive fluorescent indicators intended for biological applications are described. The increase of the crownetherring size enhances the affinity for larger cations, but weakens the fluorescent response and selectivity. A compound having a 15-crown-5 chelator directly attached to a 2,7-difluoroxanthenone fluorophore loads into live cells and responds