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| Preparation of zinc sulfate open frameworks based probe materials and detection of Pb2+ and Fe3+ ions |
| Author Name | Affiliation | E-mail | | LU Pingping | School of Civil Engineering, Liaoning Technical University, Fuxin, Liaoning 123000, China | | | ZHANG Shuguang | School of Civil Engineering, Guilin University of Technology, Guilin, Guangxi 541004, China | | | ZHANG Peipei | College of Chemistry and Bioengineering, Guilin University of Technology, Guilin, Guangxi 541004, China | zhangpeipei@glut.edu.cn | | NI Aiyun | College of Pharmacy, Dezhou University, Dezhou, Shandong 253023, China | niaiyun_qd@163.com |
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| 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+ |
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| LU Pingping,ZHANG Shuguang,ZHANG Peipei,NI Aiyun.Preparation of zinc sulfate open frameworks based probe materials and detection of Pb2+ and Fe3+ ions[J].Chinese Journal of Inorganic Chemistry,2025,41(5):959-968. |
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