A new BODIPY based Pd (II) complex, Pd-BDPA has been developed as a dual fluorometric and colorimetric probe for the detection of sulfide anion. The sensing ability is based on the interaction affinity of the Pd (II) towards the sulfide anion which is highly selective and immediate with a detection limit of 240 nM. The interaction between Pd (II) and sulfide is not only highly selective over the other common anions but also not interfered by their coexisting. This selective interaction between them leads to the regeneration of free ligand resulting in the dramatic changes in both fluorescence and absorption spectra. The fluorescent changes lead to quenching the emission spectra which is linear with the concentration of sulfide in the range of 1-10 μM. In addition to fluorescence quenching, the interaction also resulted in the significant color switching from purple to blue which was easily distinguished by the naked eye. Another important advantage is that the Pd-BDPA coated paper-based strips show the sulfide selectivity and sensitivity by the color changes as is in the solution form, revealing its practical utility more conveniently. In addition, the Pd-BDPA probe can also successfully be utilized for the determination of sulfide in real water samples with satisfactory recovery results indicating its feasibility for environmental samples.

已开发出一种新的基于BODIPY的Pd（II）配合物Pd-BDPA，它是用于检测硫化物阴离子的双重荧光和比色探针。感测能力基于Pd（II）对硫化物阴离子的相互作用亲和力，该亲和力具有很高的选择性和即时性，检测极限为240 nM。Pd（II）和硫化物之间的相互作用不仅对其他常见阴离子具有高选择性，而且不受它们共存的干扰。它们之间的这种选择性相互作用导致游离配体的再生，从而导致荧光和吸收光谱的急剧变化。荧光变化导致发射光谱淬灭，该发射光谱与1-10μM范围内的硫化物浓度呈线性关系。除了荧光淬灭 相互作用还导致显着的颜色从紫色变为蓝色，这可以通过肉眼轻松区分。另一个重要的优点是，Pd-BDPA涂层纸基条通过溶液形式的颜色变化显示出硫化物的选择性和灵敏度，从而更方便地揭示了其实用性。此外，Pd-BDPA探针还可以成功地用于测定实际水样品中的硫化物，回收率令人满意，表明其可用于环境样品。