一种用于马来酸选择性荧光传感的席夫碱分子探针，可识别食品添加剂中的马来酸并用于细胞成像。
A Schiff-Base Molecular Probe for Selective Fluorescence Sensing of Maleic Acid with Recognition of Maleic Acid in Food Additives and Cell Imaging.
作者信息
Mishra Swagatika, Dash Pragyan P, Mohanty Patitapaban, Panda Manasa K, Mohanty Monalisa, Nanda Prasant K, Behera Santosh K, Sahoo Suban K, Bhaskaran Renjith, Jali Bigyan Ranjan
机构信息
Department of Chemistry, Veer Surendra Sai University of Technology, Burla, Sambalpur, 768018, Odisha, India.
CSIR-Institute of Minerals and Materials Technology, Bhubaneswar, 751013, Odisha, India.
出版信息
J Fluoresc. 2024 Oct 24. doi: 10.1007/s10895-024-04015-x.
The 2,4-dinitrophenylhydrazine based Schiff base (L) acts as an effective fluorescence sensor for the selective detection of maleic acid. The detection limit of L towards maleic acid is observed to be 1.29 × 10 M. A 1:1 binding stoichiometry between L and maleic acid was obtained using Bensi-Hilderbrand method. The binding constant (K) was measured to be 5.17 × 10 M. The sensing behavior of L was confirmed through analysis using FT-IR, DLS and SEM analysis, alongside DFT calculations. Theoretical assessments clearly suggest that the L's mono-protonation and complexation in the solvent medium are the primary mechanisms in the sensing process. Additionally, L is used to imaging the maleic acid in living cells, demonstrating its potential biological uses. In addition, recognition of maleic acid in food additives was reported.
基于2,4-二硝基苯肼的席夫碱（L）作为一种有效的荧光传感器，用于选择性检测马来酸。观察到L对马来酸的检测限为1.29×10⁻⁶ M。使用本西-希尔德布兰德方法获得了L与马来酸之间1:1的结合化学计量比。测得结合常数（K）为5.17×10⁴ M⁻¹。通过傅里叶变换红外光谱（FT-IR）、动态光散射（DLS）和扫描电子显微镜（SEM）分析以及密度泛函理论（DFT）计算，证实了L的传感行为。理论评估清楚地表明，L在溶剂介质中的单质子化和络合是传感过程中的主要机制。此外，L用于对活细胞中的马来酸进行成像，证明了其潜在的生物学用途。另外，还报道了对食品添加剂中马来酸的识别。
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