{"title":"用于检测抗生素/硝基芳香族化合物的三种发光 Zn/Cd 基 MOFs 及其淬灭机制研究","authors":"Xiaoming Song , Qingxia Zhao , Xiufang Hou, Shuai Liu, Leixing Luo, Yixia Ren","doi":"10.1016/j.molstruc.2024.140813","DOIUrl":null,"url":null,"abstract":"<div><div>Precise control of experimental conditions is essential for synthesizing metal-organic frameworks (MOFs) to enable multi-functional detection of antibiotics and nitroaromatic compounds. In this study, three MOFs (Zn-CIP-1, Zn-CIP-2 and Cd-CIP-3) were synthesized using 5-(4-cyanobenzyl)isophthalic acid (5-H<sub>2</sub>CIP) and 4′-(4′'-pyridyl)-2,4′:6′,4′'-terpyridine ligands (pyterpy) under varying hydrothermal synthesis conditions. Zn-CIP-1 ([Zn(CIP)(pyterpy)]·2H<sub>2</sub>O) exhibits a two-dimensional layered skeleton structure, while Zn-CIP-2 ([Zn<sub>3</sub>(CIP)<sub>3</sub>(pyterpy)<sub>2</sub>·1·5H<sub>2</sub>O] and Cd-CIP-3 ([Cd<sub>3</sub>(CIP)<sub>3</sub>(pyterpy)<sub>2</sub>]) are isomorphic crystals with three-dimensional topological structures. Zn-CIP-1 selectively detects metronidazole (MET) and Zn-CIP-2 detects ornidazole (ORN) in aqueous solutions. Cd-CIP-3 exhibits significant fluorescence quenching with MET or ORN. These MOFs can also detect nitrobenzene (NB) in aqueous solutions with different quenching percentages. Experiments and density functional theory reveal that the main quenching mechanism of Zn-CIP-2 includes static/dynamic quenching, competitive absorption, and photo-induced electron transfer. The analysis of weak interactions, electron excitation, and emission processes demonstrates the important role of π-π stacking interactions in electron transfer processes. This study offers insights into the development of multi-functional fluorescent sensors.</div></div>","PeriodicalId":16414,"journal":{"name":"Journal of Molecular Structure","volume":"1324 ","pages":"Article 140813"},"PeriodicalIF":4.0000,"publicationDate":"2024-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Three luminescent Zn/Cd-based MOFs for detecting antibiotics/nitroaromatic compounds and quenching mechanisms study\",\"authors\":\"Xiaoming Song , Qingxia Zhao , Xiufang Hou, Shuai Liu, Leixing Luo, Yixia Ren\",\"doi\":\"10.1016/j.molstruc.2024.140813\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>Precise control of experimental conditions is essential for synthesizing metal-organic frameworks (MOFs) to enable multi-functional detection of antibiotics and nitroaromatic compounds. In this study, three MOFs (Zn-CIP-1, Zn-CIP-2 and Cd-CIP-3) were synthesized using 5-(4-cyanobenzyl)isophthalic acid (5-H<sub>2</sub>CIP) and 4′-(4′'-pyridyl)-2,4′:6′,4′'-terpyridine ligands (pyterpy) under varying hydrothermal synthesis conditions. Zn-CIP-1 ([Zn(CIP)(pyterpy)]·2H<sub>2</sub>O) exhibits a two-dimensional layered skeleton structure, while Zn-CIP-2 ([Zn<sub>3</sub>(CIP)<sub>3</sub>(pyterpy)<sub>2</sub>·1·5H<sub>2</sub>O] and Cd-CIP-3 ([Cd<sub>3</sub>(CIP)<sub>3</sub>(pyterpy)<sub>2</sub>]) are isomorphic crystals with three-dimensional topological structures. Zn-CIP-1 selectively detects metronidazole (MET) and Zn-CIP-2 detects ornidazole (ORN) in aqueous solutions. Cd-CIP-3 exhibits significant fluorescence quenching with MET or ORN. These MOFs can also detect nitrobenzene (NB) in aqueous solutions with different quenching percentages. Experiments and density functional theory reveal that the main quenching mechanism of Zn-CIP-2 includes static/dynamic quenching, competitive absorption, and photo-induced electron transfer. The analysis of weak interactions, electron excitation, and emission processes demonstrates the important role of π-π stacking interactions in electron transfer processes. This study offers insights into the development of multi-functional fluorescent sensors.</div></div>\",\"PeriodicalId\":16414,\"journal\":{\"name\":\"Journal of Molecular Structure\",\"volume\":\"1324 \",\"pages\":\"Article 140813\"},\"PeriodicalIF\":4.0000,\"publicationDate\":\"2024-11-21\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Molecular Structure\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0022286024033210\",\"RegionNum\":2,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"CHEMISTRY, PHYSICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Molecular Structure","FirstCategoryId":"92","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0022286024033210","RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
Three luminescent Zn/Cd-based MOFs for detecting antibiotics/nitroaromatic compounds and quenching mechanisms study
Precise control of experimental conditions is essential for synthesizing metal-organic frameworks (MOFs) to enable multi-functional detection of antibiotics and nitroaromatic compounds. In this study, three MOFs (Zn-CIP-1, Zn-CIP-2 and Cd-CIP-3) were synthesized using 5-(4-cyanobenzyl)isophthalic acid (5-H2CIP) and 4′-(4′'-pyridyl)-2,4′:6′,4′'-terpyridine ligands (pyterpy) under varying hydrothermal synthesis conditions. Zn-CIP-1 ([Zn(CIP)(pyterpy)]·2H2O) exhibits a two-dimensional layered skeleton structure, while Zn-CIP-2 ([Zn3(CIP)3(pyterpy)2·1·5H2O] and Cd-CIP-3 ([Cd3(CIP)3(pyterpy)2]) are isomorphic crystals with three-dimensional topological structures. Zn-CIP-1 selectively detects metronidazole (MET) and Zn-CIP-2 detects ornidazole (ORN) in aqueous solutions. Cd-CIP-3 exhibits significant fluorescence quenching with MET or ORN. These MOFs can also detect nitrobenzene (NB) in aqueous solutions with different quenching percentages. Experiments and density functional theory reveal that the main quenching mechanism of Zn-CIP-2 includes static/dynamic quenching, competitive absorption, and photo-induced electron transfer. The analysis of weak interactions, electron excitation, and emission processes demonstrates the important role of π-π stacking interactions in electron transfer processes. This study offers insights into the development of multi-functional fluorescent sensors.
期刊介绍：
The Journal of Molecular Structure is dedicated to the publication of full-length articles and review papers, providing important new structural information on all types of chemical species including:
• Stable and unstable molecules in all types of environments (vapour, molecular beam, liquid, solution, liquid crystal, solid state, matrix-isolated, surface-absorbed etc.)
• Chemical intermediates
• Molecules in excited states
• Biological molecules
• Polymers.
The methods used may include any combination of spectroscopic and non-spectroscopic techniques, for example:
• Infrared spectroscopy (mid, far, near)
• Raman spectroscopy and non-linear Raman methods (CARS, etc.)
• Electronic absorption spectroscopy
• Optical rotatory dispersion and circular dichroism
• Fluorescence and phosphorescence techniques
• Electron spectroscopies (PES, XPS), EXAFS, etc.
• Microwave spectroscopy
• Electron diffraction
• NMR and ESR spectroscopies
• Mössbauer spectroscopy
• X-ray crystallography
• Charge Density Analyses
• Computational Studies (supplementing experimental methods)
We encourage publications combining theoretical and experimental approaches. The structural insights gained by the studies should be correlated with the properties, activity and/ or reactivity of the molecule under investigation and the relevance of this molecule and its implications should be discussed.
京公网安备 11010802042870号
京ICP备2023020795号-1
分享
求助内容：
应助结果提醒方式：
扫码关注我们
