化学
荧光
色酮
水溶液中的金属离子
水溶液
检出限
席夫碱
腙
光化学
吸收光谱法
分析化学(期刊)
金属
物理化学
立体化学
有机化学
色谱法
物理
量子力学
作者
Jiafeng Wang,Yu Zhou,Guifu Si,Guoyong Xu,Zhou Su,Xuan Xue
标识
DOI:10.1016/j.jinorgbio.2023.112302
摘要
Isatin-3-(7'-Methoxychromone-3'-methylidene) hydrazone (L) was synthesized based on chromone schiff base, and used to construct a novel sensor to detect Cr3+. Fluorescence detection experiments were carried out for a range of different concentrations of Cr3+ in aqueous solutions. A concentration calculation model was built on the basis of eliminating interference of excitation spectrum in the fluorescence spectra with mathematical method. Results showed that probe L displayed a 70-fold fluorescence enhancement upon the addition of Cr3+ due to the photo-induced electron transfer (PET) effect. On the other hand, metal ions except Cr3+ did not cause significant change in either the absorption or the fluorescence spectrum of L. In addition, L showed a good selectivity to Cr3+ over other metal cations, especially Al3+ and Cu2+. The probe L can detect Cr3+ highly and selectively by the direct chelation enhanced fluorescence with a detection limit of 3.14 × 10-6 M. Furthermore, benefiting from their good water solubility and biocompatibility, cell imaging and real-time monitoring of Cr3+ in living HepG2 cells were successfully achieved.
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