A reversible Em-FRET rhodamine-based chemosensor for carboxylate anions using a ditopic receptor strategy

Chatthai Kaewtong; Jakkapong Noiseephum; Yuwapon Uppa; Nongnit Morakot; Neramit Morakot; Banchob Wanno; Thawatchai Tuntulani; Buncha Pulpoka

doi:10.1039/B9NJ00594C

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A reversible E_m-FRET rhodamine-based chemosensor for carboxylate anions using a ditopic receptor strategy†

Chatthai Kaewtong,*^a Jakkapong Noiseephum,^a Yuwapon Uppa,^b Nongnit Morakot,^a Neramit Morakot,^a Banchob Wanno,^a Thawatchai Tuntulani^c and Buncha Pulpoka^c

Author affiliations

* Corresponding authors

^a Supramolecular Chemistry Research Unit, Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Mahasarakham University, Mahasarakham, Thailand
E-mail: kchatthai@gmail.com
Fax: +66 0437 54246
Tel: +66 0437 54246

^b Department of Chemistry, Faculty of Engineering, Rajamangala University of Technology Isan Khon Kaen Campus, Khonkaen 40000, Thailand
Fax: +66 0437 54246
Tel: +66 0433 36371

^c Supramolecular Chemistry Research Unit, Department of Chemistry, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand
Fax: +66 0221 87598
Tel: +66 0221 87643

Abstract

A reversible rhodamine-based sensor (L1) capable of undergoing excimer-fluorescent resonance energy transfer (E_m-FRET) was designed and synthesized using a ditopic receptor strategy. Addition of Cu²⁺ ions to a solution of L1 induced a ring-open conformation of spirolactam (E_m-FRET ON), whilst ring closure was induced upon addition of CH₃COO⁻ (E_m-FRET OFF).

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Supplementary files

Spectroscopic data and compound characterization data including proposed binding modes PDF (1241K)

Article information

DOI: https://doi.org/10.1039/B9NJ00594C
Article type: Paper
Submitted: 25 Oct 2009
Accepted: 15 Jan 2010
First published: 29 Apr 2010

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New J. Chem., 2010,34, 1104-1108

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A reversible E_m-FRET rhodamine-based chemosensor for carboxylate anions using a ditopic receptor strategy

C. Kaewtong, J. Noiseephum, Y. Uppa, N. Morakot, N. Morakot, B. Wanno, T. Tuntulani and B. Pulpoka, New J. Chem., 2010, 34, 1104 DOI: 10.1039/B9NJ00594C

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