A bissalamo-coumarin-based chemical sensor H₄L was designed and synthesized. It was found that the sensor molecule can selectively recognize Cr³⁺ and Al³⁺. In a buffer solution system, its complex L − Cr³⁺ is highly sensitive to the detection of S²⁻ anion, and the sensor H₄L can recognize Cr³⁺ at an acceptable physiological pH. Within the range, L − Cr³⁺ can recognize S²⁻ anions with high selectivity and sensitivity. The detection limit for the sensor molecule H₄L to recognize Cr³⁺ is 4.87 × 10^-7 M, and the quenching constant with Cr³⁺ is 2.406 × 10⁶ M^-1. It was calculated that the detection limit of L − Cr³⁺ as a sensor was 8.23 × 10^-7 M, and the binding constant with S^2- anion was 1.44 × 10⁶ M^-1. The possible recognition mechanisms were discussed by UV, fluorescence titration, ESI-mass spectrometry and Job curve. In addition, S²⁻ in different water samples was detected and the recovery was good.

一种基于bissalamo香豆素化学传感器ħ ₄ L的设计和合成。发现传感器分子可以选择性地识别Cr ³⁺和Al ³⁺。在缓冲溶液系统中，其络合物L-Cr ³⁺对S ^2-阴离子的检测高度敏感，传感器H ₄ L可以在可接受的生理pH下识别Cr ³⁺。在该范围内，L-Cr ³⁺可以高选择性和高灵敏度地识别S ^2--阴离子。传感器分子H ₄ L识别Cr ³⁺的检测限为4.87×10 ^-7M，并且Cr ³⁺的淬灭常数为2.406×10 ⁶ M ^-1。经计算，作为传感器的L-Cr ³⁺的检出限为8.23×10 ^-7 M，与S ^2-阴离子的结合常数为1.44×10 ⁶ M ^-1。通过紫外，荧光滴定，ESI-质谱和Job曲线讨论了可能的识别机理。另外，在不同的水样中检测到S ^2-，回收率良好。