Meihui Chen, Wenheng Huang, Yangping Li, Yongchun Chen, Dan Ji, Mingguang Zhu
{"title":"基于α-氰二苯乙烯的Co2+探针的制备、AIE和ESIPT行为、可控固态荧光及应用。","authors":"Meihui Chen, Wenheng Huang, Yangping Li, Yongchun Chen, Dan Ji, Mingguang Zhu","doi":"10.1088/2050-6120/aca378","DOIUrl":null,"url":null,"abstract":"<p><p>A simple<i>α</i>-cyanostilbene-functioned salicylaldehyde-based Schiff-base probe, which exhibited outstanding 'aggregation-induced emission and excited state intramolecular proton transfer (AIE + ESIPT)' emission in solution, aggregation and solid states, was synthesized in high yield of 87%. Its solid-states with different morphologies emitted different fluorescence after crystallization in EtOH/H<sub>2</sub>O (1/2, v/v) mixtures or pure EtOH solvent. Besides, it exhibited an obvious spectro-photometrical fluorescence quenching for highly selective sensing of Co<sup>2+</sup>in THF/water system (ƒ<sub>w</sub>= 60%, pH = 7.4), accompanied by an intense green fluorescence turn-off behavior under UV<sub>365nm</sub>illumination. The binding stochiometry between the ligand and Co<sup>2+</sup>was found to be 2:1, and the detection limit (DL) was calculated to be 0.41 × 10<sup>-8</sup>M. In addition, it could be applied to detect Co<sup>2+</sup>in real water samples and on silica gel testing strip.</p>","PeriodicalId":18596,"journal":{"name":"Methods and Applications in Fluorescence","volume":" ","pages":""},"PeriodicalIF":2.4000,"publicationDate":"2022-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":"{\"title\":\"Preparation, AIE and ESIPT behaviour, controllable solid-state fluorescence and application of Co<sup>2+</sup>probe based on<i>α</i>-cyanostilbene.\",\"authors\":\"Meihui Chen, Wenheng Huang, Yangping Li, Yongchun Chen, Dan Ji, Mingguang Zhu\",\"doi\":\"10.1088/2050-6120/aca378\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><p>A simple<i>α</i>-cyanostilbene-functioned salicylaldehyde-based Schiff-base probe, which exhibited outstanding 'aggregation-induced emission and excited state intramolecular proton transfer (AIE + ESIPT)' emission in solution, aggregation and solid states, was synthesized in high yield of 87%. Its solid-states with different morphologies emitted different fluorescence after crystallization in EtOH/H<sub>2</sub>O (1/2, v/v) mixtures or pure EtOH solvent. Besides, it exhibited an obvious spectro-photometrical fluorescence quenching for highly selective sensing of Co<sup>2+</sup>in THF/water system (ƒ<sub>w</sub>= 60%, pH = 7.4), accompanied by an intense green fluorescence turn-off behavior under UV<sub>365nm</sub>illumination. The binding stochiometry between the ligand and Co<sup>2+</sup>was found to be 2:1, and the detection limit (DL) was calculated to be 0.41 × 10<sup>-8</sup>M. In addition, it could be applied to detect Co<sup>2+</sup>in real water samples and on silica gel testing strip.</p>\",\"PeriodicalId\":18596,\"journal\":{\"name\":\"Methods and Applications in Fluorescence\",\"volume\":\" \",\"pages\":\"\"},\"PeriodicalIF\":2.4000,\"publicationDate\":\"2022-11-25\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"1\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Methods and Applications in Fluorescence\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://doi.org/10.1088/2050-6120/aca378\",\"RegionNum\":3,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"CHEMISTRY, ANALYTICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Methods and Applications in Fluorescence","FirstCategoryId":"92","ListUrlMain":"https://doi.org/10.1088/2050-6120/aca378","RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"CHEMISTRY, ANALYTICAL","Score":null,"Total":0}
Preparation, AIE and ESIPT behaviour, controllable solid-state fluorescence and application of Co2+probe based onα-cyanostilbene.
A simpleα-cyanostilbene-functioned salicylaldehyde-based Schiff-base probe, which exhibited outstanding 'aggregation-induced emission and excited state intramolecular proton transfer (AIE + ESIPT)' emission in solution, aggregation and solid states, was synthesized in high yield of 87%. Its solid-states with different morphologies emitted different fluorescence after crystallization in EtOH/H2O (1/2, v/v) mixtures or pure EtOH solvent. Besides, it exhibited an obvious spectro-photometrical fluorescence quenching for highly selective sensing of Co2+in THF/water system (ƒw= 60%, pH = 7.4), accompanied by an intense green fluorescence turn-off behavior under UV365nmillumination. The binding stochiometry between the ligand and Co2+was found to be 2:1, and the detection limit (DL) was calculated to be 0.41 × 10-8M. In addition, it could be applied to detect Co2+in real water samples and on silica gel testing strip.
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Methods and Applications in Fluorescence focuses on new developments in fluorescence spectroscopy, imaging, microscopy, fluorescent probes, labels and (nano)materials. It will feature both methods and advanced (bio)applications and accepts original research articles, reviews and technical notes.
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