{"title":"Dual-Emission Fluorescent Carbon Dots Grafted by Rhodamine-B for Selective Detection of Iron Ion and Bioimaging in Cell","authors":"Xiaoyan Hu, Hao Zou, Renjie Zhuang, Jun Cao, Jiaqi Pan, Chaorong Li, Yingying Zheng","doi":"10.1002/ppsc.202300193","DOIUrl":null,"url":null,"abstract":"Rhodamine-B grafted carbon dots (RhB-CDs) with double emission fluorescence are developed , one of which has excitation dependence, while the other have not. The prepared RhB-CDs have good dispersibility, uniform spherical shape, and excellent water solubility. They could be used to specifically detect Fe<sup>3+</sup> ions in an aqueous solution with the detection limit of 1.1 × 10<sup>−6</sup> <span>m</span> and with good anti-interference ability, because Fe<sup>3+</sup> ions are easier to combine with hydroxyl groups on the surface of RhB-CDs to form aggregates (such as ferric hydroxide) than other metal ions, which lead to the fluorescence quenching of RhB-CDs. Fe<sup>3+</sup> ions not only quench the fluorescence intensity of both double emission peaks of RhB-CDs, but also change the relative fluorescence intensity of these two fluorescence emission peaks. Therefore, two different fluorescence analysis methods are used to specifically identify iron ions and the results are consistent with each other. At the same time, the double emission fluorescent RhB-CDs have low hemolysis rate and cytotoxicity, indicating that RhB-CDs do little harm to cells and are further used to detect Fe<sup>3+</sup> ions in cells through fluorescence bioimaging. All of the above indicates that the prepared RhB-CDs would have potential application value in detecting iron ions in blood and cells.","PeriodicalId":19903,"journal":{"name":"Particle & Particle Systems Characterization","volume":"130 1","pages":""},"PeriodicalIF":2.7000,"publicationDate":"2024-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Particle & Particle Systems Characterization","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1002/ppsc.202300193","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
引用次数: 0
Abstract
Rhodamine-B grafted carbon dots (RhB-CDs) with double emission fluorescence are developed , one of which has excitation dependence, while the other have not. The prepared RhB-CDs have good dispersibility, uniform spherical shape, and excellent water solubility. They could be used to specifically detect Fe3+ ions in an aqueous solution with the detection limit of 1.1 × 10−6m and with good anti-interference ability, because Fe3+ ions are easier to combine with hydroxyl groups on the surface of RhB-CDs to form aggregates (such as ferric hydroxide) than other metal ions, which lead to the fluorescence quenching of RhB-CDs. Fe3+ ions not only quench the fluorescence intensity of both double emission peaks of RhB-CDs, but also change the relative fluorescence intensity of these two fluorescence emission peaks. Therefore, two different fluorescence analysis methods are used to specifically identify iron ions and the results are consistent with each other. At the same time, the double emission fluorescent RhB-CDs have low hemolysis rate and cytotoxicity, indicating that RhB-CDs do little harm to cells and are further used to detect Fe3+ ions in cells through fluorescence bioimaging. All of the above indicates that the prepared RhB-CDs would have potential application value in detecting iron ions in blood and cells.
期刊介绍:
Particle & Particle Systems Characterization is an international, peer-reviewed, interdisciplinary journal focusing on all aspects of particle research. The journal joined the Advanced Materials family of journals in 2013. Particle has an impact factor of 4.194 (2018 Journal Impact Factor, Journal Citation Reports (Clarivate Analytics, 2019)).
Topics covered include the synthesis, characterization, and application of particles in a variety of systems and devices.
Particle covers nanotubes, fullerenes, micelles and alloy clusters, organic and inorganic materials, polymers, quantum dots, 2D materials, proteins, and other molecular biological systems.
Particle Systems include those in biomedicine, catalysis, energy-storage materials, environmental science, micro/nano-electromechanical systems, micro/nano-fluidics, molecular electronics, photonics, sensing, and others.
Characterization methods include microscopy, spectroscopy, electrochemical, diffraction, magnetic, and scattering techniques.