AIE型荧光探针对土壤中硫氰酸根的识别和检测OA北大核心

Thiocyanate(SCN⁻)plays a multifaceted role in agriculture,contributing positively to plant nutrition,biological control,and soil improvement.However,thiocyanate is difficult to decompose,and its accumulation can lead to detrimental environmental consequences,including plant toxicity,water resource contamination,and potential impacts on food safety and human health.Therefore,this study utilized the Suzuki coupling reaction to successfully synthesize a phenylpyridine-based AIE fluorescent probe molecule.Its structure was characterized by 1H NMR,and the fluorescent response to SCN⁻ was investigated via fluorescence emission spectroscopy.Inverted fluorescence microscopy and dynamic light scattering experiments revealed that in the presence of SCN-,the probe molecules exhibited aggregation-induced emission enhancement.Analytical findings demonstrated that the probe displayed high selectivity and sensitivity towards SCN⁻,with common bio-related anions showing no interference in SCN-recognition and a linear detection response at certain concentrations.The detection limit was 6.79 μM.Additionally,the enhanced scattered light due to the probe aggregation enabled the semi-quantitative,naked-eye detection of SCN-.This feature holds significant potential in addressing agricultural environmental pollution issues,such as rapid monitoring of soil contamination.