Abstract
AbstractA novel bithiophene‐naphthalene based ratiometric fluorescent chemosensor SS ((2E,2′E)‐2,2′‐([2,2′‐bithiophene]‐5,5′‐diylbis(methanylylidene)) bis(N‐(naphthalen‐1‐yl) hydrazine‐1‐carbothioamide)) for detecting Cd2+ was prepared. SS can detect Cd2+ by a ratiometric fluorescent response with red‐shifted emission from 500 to 540 nm. The binding ratio of SS and Cd2+ was determined to be a 1 : 1 stoichiometry via Job plot. The detection limit was found to be 4.41 μM. The association constant (K) was calculated as 3.00×102 M−1. Sensor SS was successfully applied in real water samples and fluorescent test kits for analysis of Cd2+. The sensing process of SS towards Cd2+ was illustrated by fluorescent, UV‐vis and NMR spectroscopy, ESI‐MS (electrospray ionization‐mass spectrometry), FT‐IR (Fourier transform‐Infrared spectroscopy) and calculations.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
