A new Dual-Channel Chemosensor Based on Chemodosimeter Approach for Detecting Cyanide in Aqueous Solution: a Combination of Experimental and Theoretical Studies

作者：Lee Jae Jun; Lee Sun Young; Bok Kwon Hee; Kim Cheal^*

来源：Journal of Fluorescence, 2015, 25(5): 1449-1459.

DOI：10.1007/s10895-015-1635-9

• Cyanide
• Colorimetric
• Fluorescent
• DFT calculations

A new colorimetric and fluorescent receptor 1 for the detection of CN- has been simply developed. Receptor 1 showed selectively colorimetric and fluorometric responses to CN- in a near-perfect aqueous solution, respectively. This sensor displayed an obvious color change from yellow to colorless upon selective binding with CN-. In addition, it could function as an "OFF-ON type" fluorescent response through a nucleophilic addition mechanism. The binding mode of receptor 1 with CN- was proposed to be 1:1, based on Job plot, H-1 NMR titration and ESI-mass spectrometry analysis. Moreover, the sensing mechanism for CN- was theoretically supported by DFT and TD-DFT calculations.

• 出版日期2015-9