一种基于简单吲哚并[2,3-a]咔唑的比色化学传感器，用于同时检测 Cu 和 Fe 离子。
A simple indolo[2,3-a]carbazole based colorimetric chemosensor for simultaneous detection of Cu and Fe ions.
机构信息
School of Chemistry and Chemical Engineering, Zunyi Normal College, Zunyi 563006, China.
Department of Applied Physics, Huzhou University, Huzhou 313000, China.
出版信息
Spectrochim Acta A Mol Biomol Spectrosc. 2020 Jun 15;234:118236. doi: 10.1016/j.saa.2020.118236. Epub 2020 Mar 7.
A new indolo[2,3-a]carbazole based colorimetric chemosensor C1 was designed and synthesized. The optical properties of C1 were investigated by UV-vis spectroscopy, UV-vis titrations, and fluorescence spectroscopy. The HOMO and LUMO values of C1 were obtained using density functional theory (DFT) calculations. The results indicate that C1 has specific selectivity and high sensitivity for detection of Cu and Fe ions compared with metal ions (K, Na, Mg, Zn, Cd, Pb, Hg, Ag, Co, Cr, Ni, Mn, Ba). The presence of Cu ions leads to visible color change from yellow to colorless in an aqueous-acetonitrile solution, especially. Moreover, the detection limit for the analysis of Cu and Fe ions is found to be as low as 2.93 × 10 M and 4.10 × 10 M, respectively. Therefore, C1 should have potential applications as a practical colorimetric chemosensor for simultaneous detection of Cu and Fe in the environment and biological systems.
一种新型基于吲哚并[2,3-a]咔唑的比色化学传感器 C1 被设计和合成。通过紫外可见光谱、紫外可见滴定和荧光光谱研究了 C1 的光学性质。使用密度泛函理论（DFT）计算得到了 C1 的 HOMO 和 LUMO 值。结果表明，与金属离子（K、Na、Mg、Zn、Cd、Pb、Hg、Ag、Co、Cr、Ni、Mn、Ba）相比，C1 对 Cu 和 Fe 离子具有特定的选择性和高灵敏度。Cu 离子的存在导致在水-乙腈溶液中从黄色到无色的可见颜色变化，特别是。此外，分析 Cu 和 Fe 离子的检测限分别低至 2.93×10-7 M 和 4.10×10-7 M。因此，C1 有望作为一种实用的比色化学传感器，用于环境和生物系统中同时检测 Cu 和 Fe。
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