Helicenoid-based bis-1,2,3-triazole tweezer: Synthesis and selective iodide sensing |
| |
Authors: | Siddharth B Kamble Prashant M Gawade Purav M Badani |
| |
Institution: | Department of Chemistry, University of Mumbai, Mumbai, India |
| |
Abstract: | AbstractNovel helicenoid based 1,2,3-triazole tweezer 4 was synthesized using a multistep synthetic protocol with high yields from 2,7-Dihydroxynaphtlene 3 as a precursor. This helicenoid-based bis-1,2,3-triazole tweezer 4 selectively causes non-covalent interaction with iodide anion. The UV-vis absorption exhibited enhancement while fluorescence spectra exhibited significant quenching. 1H NMR titration showed shift of 1,2,3-triazole C-H signal with an increase in iodide concentration. Association constant of 3.818?×?104 M?1 was recorded for the host interaction with iodide ions. This value of association constant for iodide sensing using 1,2,3-triazole is the best reported so far for hosts with 1,2,3-triazole moiety and suggests that the helicenoid geometry is responsible for this remarkable behavior. |
| |
Keywords: | Fluorescence helicenoid iodide sensor 1 2 3-triazoles tweezer |
|
|