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Fluorogenic ratiometric dipodal optode containing imine-amide linkages: Exploiting subtle thorium (IV) ion sensing |
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| Authors: | Kundan Tayade Amanpreet Kaur Sandesh Tetgure G. Krishana Chaitanya Narinder Singh Anil Kuwar |
| Affiliation: | 1. School of Chemical Sciences, North Maharashtra University, Jalgaon, India;2. Centre for Nanoscience and Nanotechnology, Panjab University, Chandigarh, India;3. School of Chemical Sciences, Swami Ramanand Tirth Marathawada University, Nanded, India;4. Department of Chemistry, Indian Institute of Technology, Ropar, Punjab, India |
| Abstract: | The (13E,19E)-N1′,N3′-bis[4-(diethylamino)-2-hydroxybenzylidene]malonohydrazide (L) has been developed for the detection of Th4+ ions using dual channel signalling system. The UV–vis absorbance and fluorescence spectroscopic data revealed the formation of L–Th4+ complex in 1:1 equilibrium. The density functional theory (DFT) also confirms the optimum binding cavity for the recognition of metal ion. The binding constant computed from different mathematical models for an assembly of L–Th4+. The detection limit of L for Th4+ recognition is to a concentration down to 0.1 μM (0.023 μg g−1). The present sensing system is also successfully applied for the detection of Th4+ ion present in soil near nuclear atomic plants. |
| Keywords: | Ratiometric fluorescent sensor Tetravalent thorium ion (Th4+) Real sample analysis |
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