Despite its utility as an oxidant, periodate is potentially toxic; therefore, simple methods with high sensitivity and selectivity are required for periodate determination. Herein, we report a novel periodate signaling probe, 2-acetylnaphthol phenylselenoether (PI-1), synthesized by the reaction of 2-acetyl-6-naphthol with phenylselenyl chloride. In the presence of periodate, the fluorescence emission wavelength of the designed probe changed significantly from 566 to 482 nm. The periodate signaling of PI-1 was due to the oxidative transformation of 2-acetylnaphthol phenylselenoether to the corresponding selenoxide derivative, as verified by ¹H NMR spectroscopy and high-resolution mass spectrometry. An analysis of the signaling behavior of PI-1 using the fluorescence intensity ratio (I₄₈₂/I₅₆₆) confirmed that PI-1 exhibited high selectivity toward periodate over representative anions, metal ions, and oxidants. Furthermore, the presence of common anions and metal ions as background had no effect on periodate signaling. Notably, periodate signaling by PI-1 was accomplished in 15 min with high sensitivity (detection limit: 7.0 × 10^–8 M, 13 ppb). As a practical application of the developed probe, a convenient fluorometric assay for regenerated periodate was demonstrated.

尽管可用作氧化剂，但高碘酸盐具有潜在毒性。因此，高碘酸盐的测定需要具有高灵敏度和选择性的简单方法。在此，我们报告了一种新的高碘酸盐信号探针，2-乙酰萘酚苯基硒醚( PI-1 )，由 2-乙酰基-6-萘酚与苯基硒基氯反应合成。在高碘酸盐存在下，设计探针的荧光发射波长从 566 nm 显着变化到 482 nm。PI-1的高碘酸盐信号是由于 2-乙酰萘酚苯基硒醚氧化转化为相应的硒氧化物衍生物，如¹ H NMR 光谱和高分辨率质谱证实。PI-1信号行为分析使用荧光强度比 ( I ₄₈₂ / I ₅₆₆ ) 证实PI-1对高碘酸盐表现出比代表性阴离子、金属离子和氧化剂高的选择性。此外，作为背景的常见阴离子和金属离子的存在对高碘酸盐信号没有影响。值得注意的是，PI-1 的高碘酸盐信号在 15 分钟内以高灵敏度完成（检测限：7.0 × 10 ^–8 M，13 ppb）。作为开发的探针的实际应用，证明了一种方便的再生高碘酸盐荧光测定。