Author:
Das Jayanta,Ghosh Milan,Ghosh Biplab,Mandal Prasenjit,Maji Sangita,Das Debasis
Abstract
AbstractThe detection and discrimination of Fe2+ and Fe3+ ions have been investigated using a simple probe (L), produced by the condensation of ethylenediamine and 3-ethoxysalicyaldehyde. Single crystal X-ray structures demonstrate that L interacts with Fe2+ and Fe3+. In aqueous-DMSO media, the L recognises AsO2− by fluorescence and colorimetry techniques. The AsO2− aided PET inhibition and H-bond assisted chelation enhanced fluorescence (CHEF) boost fluorescence by 91-fold. The L can detect 0.354 ppb Fe2+, 0.22 ppb Fe3+ and 0.235 ppt AsO2−.
Publisher
Springer Science and Business Media LLC
Reference65 articles.
1. Bell, T. W. & Hext, N. M. Supramolecular optical chemosensors for organic analytes. Chem. Soc. Rev. 33, 589–598 (2004).
2. Suksai, C. & Tuntulani, T. Chromogenic anion sensors. Chem. Soc. Rev. 32, 192–202 (2003).
3. Lehn, J. M. Supramolecular chemistry: Receptors, catalysts, and carriers. Science 227, 849–856 (1985).
4. Stadler, A. M. & Lehn, J. M. Coupled nanomechanical motions: Metal-ion-effected, pH-modulated, simultaneous extension/contraction motions of double-domain helical/linear molecular strands. J. Am. Chem. Soc. 136, 3400–3409 (2014).
5. Kumar, A., Chhatwal, M. P., Singh, A. K., Singh, V. & Trivedi, M. A fast and selective probe for monitoring Pd2+ in aqueous medium via dual-optical readout. Chem. Commun. 50, 8488–8490 (2014).