Highly Sensitive Ratiometric Chemosensor for Selective ′Naked‐Eye′ Nanomolar Detection of Co2+ in Semi‐Aqueous Media |
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| Authors: | Smita Patil Umesh Fegade Dr Suban K Sahoo Amanpreet Singh Dr Jaromir Marek Dr Narinder Singh Prof Ratnamala Bendre Dr Anil Kuwar |
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| Institution: | 1. School of Chemical Sciences, North Maharashtra University, Jalgaon, 425001 (MS) (India);2. Department of Applied Chemistry, SV National Institute of Technology, Surat, Gujrat (India);3. Department of Chemistry, Indian Institute of Technology, Ropar, Rupanagar, Punjab (India);4. Central European Institute of Technology, Masaryk University, Kamenice 562500 Brno (Czech Republic) |
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| Abstract: | An easy‐to‐prepare chemosensor, (E)‐1‐(phthalazine‐4‐yl)‐2‐(1‐(pyridine‐2‐yl)ethylidene) hydrazine ( 3 ), structurally characterized by single X‐ray crystallography, is developed for the selective and sensitive detection of Co2+ in aqueous media. Chemosensor 3 shows both absorption and fluorescence responses to Co2+ by forming a 1:1 complex (among the surveyed metal ions) with a detection limit down to 50 nM . It can also be used as a ′naked‐eye′ sensor due to the outstanding visible and emission color changes from yellow to red and blue to orange, respectively. |
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| Keywords: | analytical chemistry aqueous media chemosensors cobalt nanomolar detection |
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