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题名: A Fiber-Optic Evanescent Wave O-2 Sensor Based on Ru(II)-Doped Fluorinated ORMOSILs
作者: Xiong, Yan1;  Zhu, Daoqian1;  Chen, Shiheng1;  Peng, Hong1;  Guan, Yafeng1
关键词: Fiber-optic sensor ;  Evanescent wave ;  Hybrid fluorinated ORMOSILs ;  Oxygen detection
刊名: JOURNAL OF FLUORESCENCE
发表日期: 2010
DOI: 10.1007/s10895-009-0550-3
卷: 20, 期:1, 页:269-274
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Life Sciences & Biomedicine ;  Physical Sciences
类目[WOS]: Biochemical Research Methods ;  Chemistry, Analytical
研究领域[WOS]: Biochemistry & Molecular Biology ;  Chemistry
英文摘要: A novel fiber-optic evanescent wave sensor (FOEWS) for O-2 detection based on [Ru(bpy)(3)](2+)-doped hybrid fluorinated ORMOSILs (organically modified silicates) has been developed. The sensing element was fabricated by dip-coating the optical fiber with [Ru(bpy)(3)](2+)-doped hybrid fluorinated ORMOSILs composed of n-propyltrimethoxysilane (n-propyl-TriMOS) and 3, 3, 3-trifluoropropyltrimethoxysilane (TFP-TriMOS). Fluorophores of [Ru(bpy)(3)](2+) were excited by the evanescent wave field produced on the fiber core surface and the emission fluorescence was quenched by O-2. Spectroscopic properties have been characterized by FTIR and UV-VIS absorption measurements. By using the presented hybrid fluorinated ORMOSILs, which enhances the coating surface hydrophobicity, the quenching response is increased. The sensitivity of the sensor is 7.5, which is quantified in terms of the ratio I (N2)/I (O2) (I (N2) and I (O2) represent the fluorescence intensities in pure N-2 and pure O-2 environments, respectively). The limit of detection (L.O.D.) is 0.01% (3 sigma) and the response time is about 1 s. Meanwhile, the proposed FOEWS has the advantages of easy fabrication, low cost, fast response and suitable sensitivity for oxygen monitoring using a cheap blue LED as light source and coupling a miniature PMT detector directly to the optical fiber probe.
关键词[WOS]: OPTICAL OXYGEN SENSOR ;  SOL-GEL MATERIALS ;  DISSOLVED-OXYGEN ;  SPECTROSCOPY ;  NANOSENSORS ;  SENSITIVITY ;  CALIBRATION ;  COMPLEXES ;  SYSTEM ;  CELLS
语种: 英语
WOS记录号: WOS:000274401600031
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/141973
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, Dept Instrumentat & Analyt Chem, Dalian 116023, Peoples R China

Recommended Citation:
Xiong, Yan,Zhu, Daoqian,Chen, Shiheng,et al. A Fiber-Optic Evanescent Wave O-2 Sensor Based on Ru(II)-Doped Fluorinated ORMOSILs[J]. JOURNAL OF FLUORESCENCE,2010,20(1):269-274.
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