{"title":"石墨氮化碳/焦二酰亚胺作为水中银检测荧光探针的改性研究","authors":"Soufian Chakir, Qiankun Xu, Yaru Li, Yu Ding, Ziteng Huang, Daosheng Sun, Yongfei Xu, Xianbiao Wang","doi":"10.1002/cnma.202400663","DOIUrl":null,"url":null,"abstract":"<p>Silver ions (Ag<sup>+</sup>), though valuable in industry and medicine, become hazardous at high concentrations, requiring reliable monitoring in environmental media. In this study, a sensitive and selective fluorescent probe is developed by modifying a graphitic carbon nitride/pyromellitic diimide (g-C<sub>3</sub>N<sub>4</sub>/PDI, CNP) composite with dithiothreitol via a simple ring-opening reaction. The introduction of <span></span>SH and <span></span>OH groups improves the probe's water dispersibility and affinity for Ag<sup>+</sup>, enhancing its adsorption capacity and detection performance. This leads to a twofold increase in fluorescence intensity, significantly improved selectivity, and a 36% increase in the Stern–Volmer quenching constant (<i>K</i>sv). Furthermore, the optimized probe exhibits excellent stability (relative standard deviation <1%) and a substantial decrease in the limit of detection from 7.59 to 1.38 μM, confirming its high sensitivity. This green, cost-effective, and easily prepared probe presents a promising solution for accurate and reliable Ag<sup>+</sup> monitoring in environmental and complex matrices.</p>","PeriodicalId":54339,"journal":{"name":"ChemNanoMat","volume":"11 6","pages":""},"PeriodicalIF":2.6000,"publicationDate":"2025-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Modification of Graphitic Carbon Nitride/Pyromellitic Diimide as a Robust Fluorescent Probe for Silver Detection in Water\",\"authors\":\"Soufian Chakir, Qiankun Xu, Yaru Li, Yu Ding, Ziteng Huang, Daosheng Sun, Yongfei Xu, Xianbiao Wang\",\"doi\":\"10.1002/cnma.202400663\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>Silver ions (Ag<sup>+</sup>), though valuable in industry and medicine, become hazardous at high concentrations, requiring reliable monitoring in environmental media. In this study, a sensitive and selective fluorescent probe is developed by modifying a graphitic carbon nitride/pyromellitic diimide (g-C<sub>3</sub>N<sub>4</sub>/PDI, CNP) composite with dithiothreitol via a simple ring-opening reaction. The introduction of <span></span>SH and <span></span>OH groups improves the probe's water dispersibility and affinity for Ag<sup>+</sup>, enhancing its adsorption capacity and detection performance. This leads to a twofold increase in fluorescence intensity, significantly improved selectivity, and a 36% increase in the Stern–Volmer quenching constant (<i>K</i>sv). Furthermore, the optimized probe exhibits excellent stability (relative standard deviation <1%) and a substantial decrease in the limit of detection from 7.59 to 1.38 μM, confirming its high sensitivity. This green, cost-effective, and easily prepared probe presents a promising solution for accurate and reliable Ag<sup>+</sup> monitoring in environmental and complex matrices.</p>\",\"PeriodicalId\":54339,\"journal\":{\"name\":\"ChemNanoMat\",\"volume\":\"11 6\",\"pages\":\"\"},\"PeriodicalIF\":2.6000,\"publicationDate\":\"2025-05-08\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"ChemNanoMat\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://onlinelibrary.wiley.com/doi/10.1002/cnma.202400663\",\"RegionNum\":4,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"CHEMISTRY, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"ChemNanoMat","FirstCategoryId":"88","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1002/cnma.202400663","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
Modification of Graphitic Carbon Nitride/Pyromellitic Diimide as a Robust Fluorescent Probe for Silver Detection in Water
Silver ions (Ag+), though valuable in industry and medicine, become hazardous at high concentrations, requiring reliable monitoring in environmental media. In this study, a sensitive and selective fluorescent probe is developed by modifying a graphitic carbon nitride/pyromellitic diimide (g-C3N4/PDI, CNP) composite with dithiothreitol via a simple ring-opening reaction. The introduction of SH and OH groups improves the probe's water dispersibility and affinity for Ag+, enhancing its adsorption capacity and detection performance. This leads to a twofold increase in fluorescence intensity, significantly improved selectivity, and a 36% increase in the Stern–Volmer quenching constant (Ksv). Furthermore, the optimized probe exhibits excellent stability (relative standard deviation <1%) and a substantial decrease in the limit of detection from 7.59 to 1.38 μM, confirming its high sensitivity. This green, cost-effective, and easily prepared probe presents a promising solution for accurate and reliable Ag+ monitoring in environmental and complex matrices.
ChemNanoMatEnergy-Energy Engineering and Power Technology
CiteScore
6.10
自引率
2.60%
发文量
236
期刊介绍:
ChemNanoMat is a new journal published in close cooperation with the teams of Angewandte Chemie and Advanced Materials, and is the new sister journal to Chemistry—An Asian Journal.