A stilbene-based compound (1) has been prepared and was highly selective for the detection of cyanide anion in aqueous media even in the presence of other anions, such as F-, Cl-, Br-, I -, ClO4-, H2PO4 -, HSO4-, NO3-, and CH3CO2-. A noticeable change in the color of the solution, along with a prominent fluorescence enhancement, was observed upon the addition of cyanide. The color change was observed upon the nucleophilic addition of the cyanide anion to the electron-deficient cyanoacrylate group of 1. The spectral changes induced by the reaction were analyzed by comparison with two model compounds, such as compound 2 with dimethyl substituents and compound 3 without a cyanoacrylate group. An intramolecular charge-transfer (ICT) mechanism played a key role in the sensing properties, and the mechanism was supported by DFT/TDDFT calculations. Sense and sensitivity: A highly efficient and selective colorimetric and ratiometric fluorescent sensor for detection of cyanide in aqueous media has been developed. This sensor exhibits a distinctive color change upon reaction with cyanide, along with significant fluorescence amplification. The sensing mechanism is discussed with the aid of spectral analyses and DFT/TDDFT calculations.
指紋深入研究「Reaction-based colorimetric and ratiometric fluorescence sensor for detection of cyanide in aqueous media」主題。共同形成了獨特的指紋。
Pen, Y. (貢獻者), Liau, K. (貢獻者), Tu, C. (貢獻者), Sun, C. (貢獻者), Wen, Y. (貢獻者), Lin, Y. (貢獻者), Su, W. (貢獻者) & Chow, T. J. (貢獻者), The Cambridge Structural Database, 1 12月 2012