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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/3325
Title: 2-Hydroxyarylimidazole-based colorimetric and ratiometric fluoride ion sensors
Authors: Kumar D.
Thomas K.R.J.
Published in: RSC Advances
Abstract: Two novel 2-hydroxyarylimidazoles were developed as colorimetric and ratiometric sensors for the naked-eye detection of fluoride anions. The discriminating absorption and fluorescence responses to fluoride in acetonitrile as well as a methanol -acetonitrile solvent system were observed. The bathochromic optical changes are attributed to the deprotonated species evidenced from 1H NMR titrations. Their selectivity for fluoride over acetate was successfully established in the methanol-acetonitrile mixture. A fluorene-bridged imidazole dimer, 4a demonstrated better response for fluoride than acetate in the neat acetonitrile. Moreover, the sensor 4a exhibited a larger ratio of fluorescence intensity response (I489/I431 = 51) than 4b (I521/I448 = 18) for fluoride in acetonitrile. © The Royal Society of Chemistry 2014.
Citation: RSC Advances (2014), 4(99): 56466-56474
URI: https://doi.org/10.1039/c4ra10482j
http://repository.iitr.ac.in/handle/123456789/3325
Issue Date: 2014
Publisher: Royal Society of Chemistry
ISSN: 20462069
Author Scopus IDs: 55581439900
57203389297
Author Affiliations: Kumar, D., Organic Materials Laboratory, Department of Chemistry, Indian Institute of Technology, Roorkee, 247667, India
Thomas, K.R.J., Organic Materials Laboratory, Department of Chemistry, Indian Institute of Technology, Roorkee, 247667, India
Corresponding Author: Thomas, K.R.J.; Organic Materials Laboratory, Department of Chemistry, Indian Institute of TechnologyIndia
Appears in Collections:Journal Publications [CY]

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