High selective fluorescence imaging of cesium distribution in Arabidopsis using a bis(trihydroxyphenyl)-appended fluorescent probe with a turn-on system

The bis(trihydroxyphenyl)-appended ligand 1 was found to display dramatically enhanced fluorescence upon the addition of Cs+, but not with any other metal ions. The self-assembled nanofiber of 1 was changed into a spherical structure upon addition of Cs+ in aqueous solution. Furthermore, 1 as a chemoprobe displayed high-resolution fluorescence imaging for cesium in Arabidopsis.