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Fluorescence 'Turn-on' Dual Sensor for Selective Detection of Cd2+ and H2AsO4- in Water.
Journal of Fluorescence ( IF 2.6 ) Pub Date : 2022-11-30 , DOI: 10.1007/s10895-022-03091-1
Shashanka Shekhar Samanta 1 , Prabhat Kumar Giri 1 , Naren Mudi 1 , Usha Mandal 1 , Ajay Misra 1
Affiliation  

A multi responsive fluorescent probe, N',2-bis(E-4-(diethylamino)-2-hydroxybenzylidene)hydrazine-1-carbothiohydrazideV(H2L) has been synthesized through one step condensation method. Probe, H2L shows 'turn-on' dual sensing properties towards Cd2+ and H2AsO4- at two distinct wavelength. The probe (H2L) is spectroscopically characterized and the chemo-sensing mechanism has been demonstrated through 1H NMR, absorption, steady state and time resolved emission study. The most promising advantage of the probe is its application in the one-pot detection of Cd2+ (λem = 462 nm) and H2AsO4-(λem = 492 nm) where intense emission appears at two different wavelengths and the observed limit of detection (LOD) of H2L towards Cd2+ and H2AsO4- are 2.67 × 10-8 M and 5.14 × 10-6 M respectively. Further the 'turn-on' emission property of H2L towards Cd2+ is applied to construct INHIBIT logic gate.

中文翻译:

用于选择性检测水中 Cd2+ 和 H2AsO4- 的荧光“开启”双传感器。

通过一步缩合法合成了一种多响应荧光探针N',2-bis(E-4-(diethylamino)-2-hydroxybenzylidene)hydrazine-1-carbothiohydrazideV(H2L)。探针 H2L 在两个不同的波长下显示出对 Cd2+ 和 H2AsO4- 的“开启”双重传感特性。探针 (H2L) 已通过光谱表征,化学传感机制已通过 1H NMR、吸收、稳态和时间分辨发射研究得到证明。该探针最有前途的优势是它在 Cd2+ (λem = 462 nm) 和 H2AsO4-(λem = 492 nm) 的一锅检测中的应用,其中强发射出现在两个不同的波长和观察到的检测限 (LOD) H2L 对 Cd2+ 和 H2AsO4- 的吸收分别为 2.67 × 10-8 M 和 5.14 × 10-6 M。进一步的“开启”
更新日期:2022-11-30
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