A novel fluorescence material HSr(bqdc)(phen) (1) for trace recognition of organic pollutant and toxic metal ions is designed and prepared by two weak fluorescent ligands and Sr. The latter was selected although it played no role in the modulation process of luminescence and despite low-cost, alkaline earth, metal-organic coordination polymers lacking competitive functionality. The strong fluorescence of the fluorescence material was based on the propeller configuration of the metal-organic coordination polymer, which was characterized by X-ray single crystal diffraction showing that the N active sites inside the crystal channels can interact with external guests. Convenient fluorescence detection of 3-AT can be realized using an ultraviolet lamp and test strip and the determination of Cd showed good reusability with a detection limit of 1 × 10 mol L, which is lower than the standard stipulated by the Environmental Protection Agency. Detailed experiments results revealed that the material was a promising candidate for specifically recognizing amitrole and Cd because of its selective fluorescence quenching and sensitive detection in water.
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