Gawade Vilas K, Jadhav Ratan W, Chari Vishnu R, Hangarge Rahul V, Bhosale Sheshanath V
Department of Chemistry, School of Chemical Sciences, Central University Karanataka, Kalaburagi, Karanataka-585367, India.
School of Chemical Sciences, Goa University, Taleigao Plateau, Goa-403 206, India.
Anal Methods. 2023 Aug 3;15(30):3727-3734. doi: 10.1039/d3ay00615h.
A naphthalenediimide (NDI)-based highly potential chemosensor for the detection of cyanide has been synthesized successfully in several steps. The NDI-based probe displayed high selectivity and sensitivity towards cyanide ions in fluorescence 'turn-off' mode over other ions used in this study. The naked-eye, UV-vis absorbance and fluorescence methods are employed to investigate the sensing performance of probe 1 toward CN ion detection. The limit of detection for CN ions was calculated to be 4.11 × 10 M. Moreover, the Stern-Volmer quenching constant and fluorescence quenching efficiency of CN ions were estimated to be 1.1 × 10 M and 88.81%, respectively. Job's plot showed a 1 : 1 stoichiometric complexation reaction between probe 1 and CN ions. For practical applications, probe 1 was efficiently applied for the detection of CN ions using a paper strip method.
通过几步成功合成了一种基于萘二亚胺（NDI）的用于检测氰化物的高潜力化学传感器。基于NDI的探针在荧光“关闭”模式下对氰离子显示出比本研究中使用的其他离子更高的选择性和灵敏度。采用肉眼、紫外可见吸收和荧光方法研究了探针1对CN离子检测的传感性能。计算得出CN离子的检测限为4.11×10 M。此外，CN离子的斯特恩-沃尔默猝灭常数和荧光猝灭效率分别估计为1.1×10 M和88.81%。Job曲线表明探针1与CN离子之间发生1∶1化学计量络合反应。在实际应用中，探针1通过纸条法有效地用于检测CN离子。
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