Title
Symmetric fluorescent probes for the selective recognition of Ag-ion via restricted Cdouble bond; length as m-dashN isomerization and on-site visual sensing applications
Author
J. Prabhu, K. Velmurugan, Qiang Zhang, S. Radhakrishnan, Lijun Tang, R. Nandhakumar
Year
2017
Journal
Journal of Photochemistry and Photobiology A: Chemistry
Abstract
Naphthalene based salen type fluorescent chemosensors have been designed and synthesized for the highly selective detection of silver ions by fluorimetry. These probes 1, 2 and 3 sense Ag+ over other cations as fluorescence ‘on-off’ behaviour. A possible mechanism is proposed, where the heavy atom effect of silver ion overcomes the effect of Cdouble bond; length as m-dashN isomerization and intramolecular restricted torsional rotation through the Csingle bondC single bond between the naphathalene and the benzene moieties. These chemosensors are further utilized to detect Ag+ as strip tests and solid supported silica gel material. These results are further supported by the theoretical calculations.
Instrument
FP-8200
Keywords
Fluorescence, Materials, Sensors