Zhijian Chang, Shumeng Li, Jia-Hai Ye, Fuyan Lin, Yuncong Chen, Zijian Guo and Xuedong Gong
{"title":"一种基于罗丹明的近红外荧光探针,用于选择性检测 Cu2+ 离子及其在生物成像中的应用。","authors":"Zhijian Chang, Shumeng Li, Jia-Hai Ye, Fuyan Lin, Yuncong Chen, Zijian Guo and Xuedong Gong","doi":"10.1039/D4AY01922A","DOIUrl":null,"url":null,"abstract":"<p >A novel near-infrared fluorescent probe <strong>TM2</strong> based on a rhodamine-bearing framework was disclosed with a large Stokes shift (100 nm). <strong>TM2</strong> exhibits highly selective recognition for Cu<small><sup>2+</sup></small> in EtOH/H<small><sub>2</sub></small>O (1 : 1, v/v) solution with a low detection limit (2.3 μM) and a wide detection range (0–50 μM). Detection of Cu<small><sup>2+</sup></small> is undisturbed at physiological pH levels of 5–9. This recognition mechanism is attributed to the formation of a 1 : 1 complex between <strong>TM2</strong> and Cu<small><sup>2+</sup></small>, validated by Job's plot, <small><sup>1</sup></small>H NMR titration, and LC-MS experiments. Moreover, the successful fluorescence imaging of Cu<small><sup>2+</sup></small> both <em>in vitro</em> and <em>in vivo</em> was also accomplished.</p>","PeriodicalId":64,"journal":{"name":"Analytical Methods","volume":" 1","pages":" 178-183"},"PeriodicalIF":2.7000,"publicationDate":"2024-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"A rhodamine based near-infrared fluorescent probe for selective detection of Cu2+ ions and its applications in bioimaging†\",\"authors\":\"Zhijian Chang, Shumeng Li, Jia-Hai Ye, Fuyan Lin, Yuncong Chen, Zijian Guo and Xuedong Gong\",\"doi\":\"10.1039/D4AY01922A\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p >A novel near-infrared fluorescent probe <strong>TM2</strong> based on a rhodamine-bearing framework was disclosed with a large Stokes shift (100 nm). <strong>TM2</strong> exhibits highly selective recognition for Cu<small><sup>2+</sup></small> in EtOH/H<small><sub>2</sub></small>O (1 : 1, v/v) solution with a low detection limit (2.3 μM) and a wide detection range (0–50 μM). Detection of Cu<small><sup>2+</sup></small> is undisturbed at physiological pH levels of 5–9. This recognition mechanism is attributed to the formation of a 1 : 1 complex between <strong>TM2</strong> and Cu<small><sup>2+</sup></small>, validated by Job's plot, <small><sup>1</sup></small>H NMR titration, and LC-MS experiments. Moreover, the successful fluorescence imaging of Cu<small><sup>2+</sup></small> both <em>in vitro</em> and <em>in vivo</em> was also accomplished.</p>\",\"PeriodicalId\":64,\"journal\":{\"name\":\"Analytical Methods\",\"volume\":\" 1\",\"pages\":\" 178-183\"},\"PeriodicalIF\":2.7000,\"publicationDate\":\"2024-11-13\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Analytical Methods\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://pubs.rsc.org/en/content/articlelanding/2025/ay/d4ay01922a\",\"RegionNum\":3,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"CHEMISTRY, ANALYTICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Analytical Methods","FirstCategoryId":"92","ListUrlMain":"https://pubs.rsc.org/en/content/articlelanding/2025/ay/d4ay01922a","RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, ANALYTICAL","Score":null,"Total":0}
A rhodamine based near-infrared fluorescent probe for selective detection of Cu2+ ions and its applications in bioimaging†
A novel near-infrared fluorescent probe TM2 based on a rhodamine-bearing framework was disclosed with a large Stokes shift (100 nm). TM2 exhibits highly selective recognition for Cu2+ in EtOH/H2O (1 : 1, v/v) solution with a low detection limit (2.3 μM) and a wide detection range (0–50 μM). Detection of Cu2+ is undisturbed at physiological pH levels of 5–9. This recognition mechanism is attributed to the formation of a 1 : 1 complex between TM2 and Cu2+, validated by Job's plot, 1H NMR titration, and LC-MS experiments. Moreover, the successful fluorescence imaging of Cu2+ both in vitro and in vivo was also accomplished.