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Development of AIEE active fluorescent and colorimetric probe for the solid, solution, and vapor phase detection of cyanide: smartphone and food applications
Analyst ( IF 3.6 ) Pub Date : 2022-07-27 , DOI: 10.1039/d2an00937d Shumaila Majeed 1 , Muhammad Tahir Waseem 1 , Gul Shahzada Khan 2 , Hafiz Muhammad Junaid 1 , Muhammad Imran 3 , Shamyla Nawazish 4 , Tausif Ahmad Khan 1 , Tariq Mahmood 1 , Sohail Anjum Shahzad 1
Analyst ( IF 3.6 ) Pub Date : 2022-07-27 , DOI: 10.1039/d2an00937d Shumaila Majeed 1 , Muhammad Tahir Waseem 1 , Gul Shahzada Khan 2 , Hafiz Muhammad Junaid 1 , Muhammad Imran 3 , Shamyla Nawazish 4 , Tausif Ahmad Khan 1 , Tariq Mahmood 1 , Sohail Anjum Shahzad 1
Affiliation
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Apart from environmental implications, the extreme toxicity of cyanide can lead to sudden human death upon prolonged exposure to it. Hence, rapid and low-level on-site detection of cyanide has earned paramount significance in the present era. Therefore, an AIEE active and piezofluorochromic Schiff base (probe 2) was synthesized which exhibited highly selective fluorescence enhancement based nanoscale (LOD; 6.17 nM) detection of CN−. The interaction mode was attributed to the deprotonation of the probe by the cyanide that was confirmed through 1H NMR titration, pH, theoretical studies, and switchable fluorescence response upon the addition of HCl. Advantageously, probe 2 displayed solid and vapor phase recognition of cyanide which is the first of its kind as far as we know. The excellent sensing potential of the probe was satisfactorily applied for the detection of cyanide in food, natural soil, and industrial wastewater. Additionally, probe 2 showed an immediate colorimetric response towards cyanide which was favorably integrated through a smartphone. Finally, the switchable fluorescence response of the probe was used to design an INHIBIT logic gate. Therefore, the multifunctional probe 2 displayed excellent practical potential for cyanide detection which was the ultimate goal of our work.
中文翻译：
开发用于氰化物的固相、溶液和气相检测的 AIEE 活性荧光和比色探针：智能手机和食品应用
除了对环境的影响外，氰化物的极端毒性在长期暴露于它时会导致人类猝死。因此，氰化物的快速和低水平现场检测在当今时代具有重要意义。因此，合成了一种 AIEE 活性和 piezofluorochromic Schiff 碱（探针2），它表现出基于纳米级（LOD；6.17 nM）的高选择性荧光增强 CN -检测。相互作用模式归因于氰化物对探针的去质子化，这通过1 H NMR 滴定、pH、理论研究和加入 HCl 时的可切换荧光响应得到证实。有利地，探针2显示了氰化物的固相和气相识别，据我们所知，这是同类中的第一个。该探针优异的传感潜力被令人满意地应用于食品、天然土壤和工业废水中氰化物的检测。此外，探针2显示出对氰化物的即时比色响应，该响应通过智能手机有利地集成。最后，利用探针的可切换荧光响应设计了一个 INHIBIT 逻辑门。因此，多功能探针2在氰化物检测方面显示出极好的实际潜力，这是我们工作的最终目标。
更新日期：2022-07-27
中文翻译：
开发用于氰化物的固相、溶液和气相检测的 AIEE 活性荧光和比色探针：智能手机和食品应用
除了对环境的影响外，氰化物的极端毒性在长期暴露于它时会导致人类猝死。因此，氰化物的快速和低水平现场检测在当今时代具有重要意义。因此，合成了一种 AIEE 活性和 piezofluorochromic Schiff 碱（探针2），它表现出基于纳米级（LOD；6.17 nM）的高选择性荧光增强 CN -检测。相互作用模式归因于氰化物对探针的去质子化，这通过1 H NMR 滴定、pH、理论研究和加入 HCl 时的可切换荧光响应得到证实。有利地，探针2显示了氰化物的固相和气相识别，据我们所知，这是同类中的第一个。该探针优异的传感潜力被令人满意地应用于食品、天然土壤和工业废水中氰化物的检测。此外，探针2显示出对氰化物的即时比色响应，该响应通过智能手机有利地集成。最后，利用探针的可切换荧光响应设计了一个 INHIBIT 逻辑门。因此，多功能探针2在氰化物检测方面显示出极好的实际潜力，这是我们工作的最终目标。
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