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Photophysical properties of rhodamine isomers: A two-photon excited fluorescent sensor for trivalent chromium cation (Cr3+)
Wan, Yan; Guo, Qianjin; Wang, Xuefei1; Xia, Andong
关键词Two-photon Excitation Fluorescent Sensor Trivalent Chromium Ion (Cr3++) Rhodamine Fluorescence On/off
刊名ANALYTICA CHIMICA ACTA
2010-04-30
DOI10.1016/j.aca.2010.03.035
665期:2页:215-220
收录类别SCI
文章类型Article
WOS标题词Science & Technology ; Physical Sciences
类目[WOS]Chemistry, Analytical
研究领域[WOS]Chemistry
关键词[WOS]ABSORPTION CROSS-SECTION ; AQUEOUS-SOLUTION ; METAL-IONS ; OFF-ON ; LIVING TISSUE ; CALCIUM WAVES ; LIVE TISSUE ; HG2+ IONS ; CHEMOSENSOR ; PROBE
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
引用统计
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/142198
专题中国科学院大连化学物理研究所
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
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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.
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