| 硫酸锌开放骨架基探针材料的制备及对Pb2+和Fe3+离子的检测 |
| Preparation of zinc sulfate open frameworks based probe materials and detection of Pb2+ and Fe3+ ions |
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| 摘要: 以二甲基亚砜(DMSO)为溶剂，通过溶剂热挥发法合成了硫酸锌开放骨架[Zn(SO4)(DMSO)] (1)基质。再将 2，6-萘二酸(P)低剂量掺杂到基质1中，制备了一种同时具有荧光和室温磷光(RTP)性质的复合物P@1。P@1具有肉眼可见的绿色RTP，持续时间约为2 s。P@1对Pb2+表现出选择性磷光增强响应，检测限为2.52 μmol·L-1。其检测机制主要是Pb—O配位作用诱导体系磷光增强。有趣的是，P@1可作为双通道探针通过荧光猝灭快速检测Fe3+，检测限为0.038 μmol·L-1。其识别机制可能归因于P@1与Fe3+之间的竞争性能量吸收。 |
| 关键词: 硫酸锌基质 掺杂 磷光和荧光探针 Pb2+ Fe3+ |
| 基金项目: 山东省自然科学基金(No.ZR2024QB308)、广西电磁化学功能物质重点实验室(No.EMFM20241110)和国家自然科学基金(No.42067041)资助。 |
| Abstract: A zinc sulfate open framework matrix, [Zn(SO4)(DMSO)] (1), was synthesized by solvothermal evaporation using dimethyl sulfoxide (DMSO) as the solvent. A composite P@1, which exhibits fluorescence and room temperature phosphorescence (RTP) properties, was prepared by doping 2,6-naphthalic acid (P) into matrix 1 at a low concentration. P@1 emitted a green RTP that was visible to the naked eye and lasted for approximately 2 s. P@1 exhibited selective phosphorescence enhancement response towards Pb2+ , with a detection limit of 2.52 μmol·L-1. The main detection mechanism is the Pb—O coordination-induced phosphorescence enhancement in the system. Interestingly, P@1 also functioned as a dualchannel probe for the rapid detection of Fe3+ ions through fluorescence quenching with a detection limit of 0.038 μmol·L-1. The recognition mechanism may be attributed to the competitive energy absorption between P@1 and Fe3+ ions. |
| Keywords: zinc sulfate matrix doping phosphorescence and fluorescence probes Pb2+ Fe3+ |
| 投稿时间：2024-11-16 修订日期：2025-01-17 |
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