A new coumarin-based chromogenic chemosensor for the detection of dual analytes Al3+ and F-

Gyeong Jin Park, Hyun Yong Jo, Ka Young Ryu, Cheal Kim

Research output: Contribution to journalArticlepeer-review

51 Scopus citations

Abstract

A multifunctional colorimetric receptor 1 (2-(3-nitro-2-oxo-2H-chromen-4-ylamino)-3-aminomaleonitrile) for the detection of both Al3+ and F- has been developed. The receptor 1 showed a significant color change in the presence of Al3+ over most other competitive metal ions including Ga3+ and In3+ in aqueous solution. The selectivity mechanism of 1 for Al3+ might be attributed to the enhancement of the intramolecular charge transfer band. Interestingly, it could be recycled simply through treatment with an appropriate reagent such as ethylenediaminetetraacedtic acid. Moreover, 1 showed a highly selective colorimetric response to F- due to the decrease in the intramolecular charge transfer band by a deprotonation process without any interference from other anions. Therefore, 1 can serve as a 'single sensor for dual targets'.

Original languageEnglish
Pages (from-to)63882-63890
Number of pages9
JournalRSC Advances
Volume4
Issue number109
DOIs
StatePublished - 2014

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