title: A selective fluoroionophore based on BODIPY-immobilized silica nanoparticles for Cu2+ ion.
abstract: A new fluorescent receptor based on BODIPY-immobilized silica nanoparticles (BODIPY-SiO2), BODIPY-SiO2, was prepared. The BODIPY-SiO2 exhibits a high affinity and selectivity for Cu2+ over competing metal ions in water. Upon the addition of Cu2+, an overall emission change of 5-fold was observed. On the other hand, except Cu2+, no significant fluorescence intensity changes were observed in the experiments using other metal ions. Interestingly, the increase in fluorescence intensity upon exposure to Cu2+ was fully reversible, as the addition of strong base to the acidic solution reversed this effect. Furthermore, we found that the BODIPY-SiO2, can remove 75% of Cu2+ ion from Cu2+ solution. Thus, the BODIPY-SiO2 can be potentially useful and effective agents of separation for selective and rapid removal of Cu2+.
authors.affiliation: Department of Chemistry, Research Institute of Natural Science, Gyeongsang National University, Jinju 660-701, South Korea.
authors.forename: Hye Young
authors.initials: HY
authors.lastname: Lee
authors.forename: Soon Young
authors.initials: SY
authors.lastname: Bae
authors.forename: Jong Sung
authors.initials: JS
authors.lastname: Jin
authors.forename: Jong Hwa
authors.initials: JH
authors.lastname: Jung