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A Selective Fluoroionophore Based on BODIPY-Immobilized Silica Nanoparticles for Cu2+ Ion

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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+.
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Keywords: BODIPY; CHEMOSENSOR; COPPER ION; FLUORESCENT; SILICA NANOPARTICLE

Document Type: Short Communication

Publication date: 2010-04-01

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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