The development of a simple fluorescent sensor for detecting metal ions is fundamentally essential. Some metal-organic frameworks exhibit excellent photoluminescence properties associated with metal ions. Herein, we synthesized a new naphthalene-substituted UiO-66 analog (UiO-66-NDC) by the solvothermal method using 1,4-naphthalenedicarboxilic acid as the organic linker. Due to UiO-66-NDC has excellent photoluminescence property and good dispersibility, we explored the potential application of UiO-66-NDC in fluorescence sensing. The results show that UiO-66-NDC not only featured different fluorescent response ability for some small-molecule solvents but also exhibited significant selectivity to several different metal ions. In particular, Fe³⁺ ions could cause serious fluorescence quenching of UiO-66-NDC in N,N-dimethylformamide (DMF). The sensing detection for different Fe³⁺ ions concentrations was performed at room temperature, and the results indicated that UiO-66-NDC can be utilized as an excellent fluorescent probe for sensing Fe³⁺ ions.

从根本上说，开发一种简单的用于检测金属离子的荧光传感器至关重要。一些金属有机骨架表现出与金属离子相关的优异的光致发光性质。本文中，我们以1,4-萘二甲酸为有机溶剂，通过溶剂热法合成了一种新的萘取代的UiO-66类似物（UiO-66-NDC）。由于UiO-66-NDC具有出色的光致发光性能和良好的分散性，我们探讨了UiO-66-NDC在荧光传感中的潜在应用。结果表明，UiO-66-NDC不仅对某些小分子溶剂具有不同的荧光响应能力，而且对几种不同的金属离子具有显着的选择性。特别是Fe ³⁺离子可能会导致N，N-二甲基甲酰胺（DMF）中UiO-66-NDC的严重荧光猝灭。在室温下对不同的Fe ³⁺离子浓度进行了检测，结果表明UiO-66-NDC可以用作检测Fe ³⁺离子的优秀荧光探针。