Photophysical properties of rhodamine isomers: A two-photon excited fluorescent sensor for trivalent chromium cation (Cr3+)
文献类型：期刊论文
| 作者 | Wan, Yan; Guo, Qianjin; Wang, Xuefei1; Xia, Andong |
| 刊名 | ANALYTICA CHIMICA ACTA
 |
| 出版日期 | 2010-04-30 |
| 卷号 | 665期号:2页码:215-220 |
| 关键词 | Two-photon Excitation Fluorescent Sensor Trivalent Chromium Ion (Cr3++++) Rhodamine Fluorescence On/off |
| ISSN号 | 0003-2670 |
| DOI | 10.1016/j.aca.2010.03.035 |
| 英文摘要 | We introduce a new rhodamine-based fluorescent chemosensor, FD8 which exhibits a distinct two-photon excited fluorescence (TPEF) on/off characteristic upon binding Cr3+ ions. By coordination with metal cation, conformation of FD8 changes from spirocyclic to open-ring, resulting in remarkable enhancement of absorption and fluorescence both in one- and two-photon excitations. As a result, a 29-fold enhancement of two-photon excited fluorescent intensity was observed when 10 eq. Cr3+ was added to the FD8 solution. The detection limit of Cr3+ cation concentration down to 1 mu M (0.01 eq. of FD8) was achieved under our experimental condition. Besides the excitation within ultraviolet regime by fluorescence resonance energy transfer (FRET) mechanism, the TPEF on/off behavior further extends the excitation to near infrared regime (the biological optimal window of 700-1200 nm), and shows more effective sensitivity. The broad excitation wavelength, on/off fluorescence and high selectivity to Cr3+ enable FD8 to be a powerful Cr3+ cation sensor with potential application, especially in biological detection. To the best of our knowledge, this is the first report about two-photon fluorescent sensor for Cr3+ ions. (C) 2010 Elsevier B.V. All rights reserved. |
| 语种 | 英语 |
| WOS记录号 | WOS:000277854500014 |
| 出版者 | ELSEVIER SCIENCE BV |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/70957]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Wang, Xuefei |
| 作者单位 | 1.Chinese Acad Sci, Inst Chem, State Key Lab Mol React Dynam, Beijing 100190, Peoples R China 2.Chinese Acad Sci, Inst Chem, BNLMS, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wan, Yan,Guo, Qianjin,Wang, Xuefei,et al. Photophysical properties of rhodamine isomers: A two-photon excited fluorescent sensor for trivalent chromium cation (Cr3+)[J]. ANALYTICA CHIMICA ACTA,2010,665(2):215-220. |
| APA | Wan, Yan,Guo, Qianjin,Wang, Xuefei,&Xia, Andong.(2010).Photophysical properties of rhodamine isomers: A two-photon excited fluorescent sensor for trivalent chromium cation (Cr3+).ANALYTICA CHIMICA ACTA,665(2),215-220. |
| MLA | Wan, Yan,et al."Photophysical properties of rhodamine isomers: A two-photon excited fluorescent sensor for trivalent chromium cation (Cr3+)".ANALYTICA CHIMICA ACTA 665.2(2010):215-220. |
入库方式： OAI收割
来源：化学研究所
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