Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5223564 | Tetrahedron | 2010 | 6 Pages |
Abstract
Two 4,5-disubstituted-1,8-naphthalimide derivatives 1 and 2 were synthesized as ratiometric fluorescent and colorimetric sensors for Cu2+, respectively. In 100% aqueous solutions of 1, the presence of Cu2+ induces a strong and increasing fluorescent emission centered at 478Â nm at the expense of the fluorescent emission of 1 centered at 534Â nm. Compound 2 senses Cu2+ by means of a colorimetric (primrose yellow to pink) method with a thorough quench in emission attributed to the deprotonation of the secondary amine conjugated to the naphthalimide fluorophore. 1-Cu2+ and 2-Cu2+ sense cyanide in ratiometric way via colorimetric and fluorescent changes.
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Related Topics
Physical Sciences and Engineering
Chemistry
Organic Chemistry
Authors
Zhaochao Xu, Jie Pan, David R. Spring, Jingnan Cui, Juyoung Yoon,