A new multifunctional Schiff base as a fluorescence sensor for Al3+ and a colorimetric sensor for CN in aqueous media: An application to bioimaging

Seul Ah Lee, Ga Rim You, Ye Won Choi, Hyun Yong Jo, Ah Ram Kim, Insup Noh, Sung Jin Kim, Youngmee Kim, Cheal Kim

Research output: Contribution to journalArticlepeer-review

185 Scopus citations

Abstract

A multifunctional fluorescent and colorimetric receptor 1 ((E)-N′-((8-hydroxy-1,2,3,5,6,7-hexahydropyrido[3,2,1-ij]quinolin-9-yl)methylene)benzohydrazide) for the detection of both Al3+ and CN in aqueous solution has been developed. Receptor 1 exhibited an excellent selective fluorescence response toward Al3+. The sensitivity of the fluorescent based assay (0.193 μM) for Al3+ is far below the limit in the World Health Organization (WHO) guidelines for drinking water (7.41 μM). In addition, receptor 1 showed an excellent detection ability in a wide pH range of 4–10 and also in living cells. Moreover, receptor 1 showed a highly selective colorimetric response to CN by changing its color from colorless to yellow immediately without any interference from other anions.

Original languageEnglish
Pages (from-to)6650-6659
Number of pages10
JournalJournal of the Chemical Society. Dalton Transactions
Volume43
Issue number18
DOIs
StatePublished - 8 Apr 2014

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