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学科主题: 物理化学
题名: An integrated micro-volume fiber-optic sensor for oxygen determination in exhaled breath based on iridium(III) complexes immobilized in fluorinated xerogels
作者: Xiong, Yan1, 2;  Ye, Zhongbin1, 2;  Xu, Jing3;  Zhu, Yuanqiang2;  Chen, Chen2;  Guan, Yafeng4
通讯作者: Yan Xiong
刊名: ANALYST
发表日期: 2013
DOI: 10.1039/c3an36591c
卷: 138, 期:6, 页:1819-1827
收录类别: SCI
合作性质: 
文章类型: Article
部门归属: 1
项目归属: 105
产权排名: 待补充
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Analytical
资助者: 4,6
研究领域[WOS]: Chemistry
英文摘要: A novel integrated fiber-optic sensor with micro detection volume is developed and evaluated for O-2 determination on a breath-by-breath basis in human health monitoring applications. The sensing element was fabricated by dip-coating an uncladded optical fiber with [Ir(piq)(2)(acac)]-doped hybrid fluorinated ORMOSIL (organically modified silicate) film, which was prepared from 3,3,3-trifluoropropyltrimethoxysilane (TFP-TriMOS) and n-propyltrimethoxysilane (n-propyl-TriMOS). The sensor was then constructed by inserting the prepared optical fiber into a transparent capillary. A microchannel formed between the optical fiber and the capillary inner wall acted as a flow cell for the sample flowing through. The evanescent wave (EW) field produced on the fiber core surface can excite the O-2-sensitive fluorophores of [Ir(piq)(2)(acac)] to produce emission fluorescence. O-2 can be sensed by its quenching effect on the emission fluorescence intensity. Spectroscopic properties have been characterized by FTIR and fluorescence measurements. Stern-Volmer and Demas models were both employed to analyse the sensor sensitivity, which is 13.0 with the LOD = 0.009% (3 sigma) and the response time is about 1 s. By integrating the sensing and detection elements on the optical fiber, the novel configuration showed advantages of easy fabrication and low cost. Parameters of sensitivity, response time, repeatability, humidity effect and temperature effect were discussed in detail. The proposed sensor showed potential for practical in-breath O-2 analysis application due to its advantages of easy fabrication, low cost, fast response, excellent hydrophobicity, negligible temperature interference and suitable sensitivity.
关键词[WOS]: CYCLOMETALATED IRIDIUM ;  OPTICAL SENSOR ;  POLYMERIC MATRIX ;  SINGLET OXYGEN ;  DIAGNOSIS ;  PHOSPHORESCENCE ;  AMMONIA ;  ACETONE ;  FILMS
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000314972500031
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/119586
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.SW Petr Univ, State Key Lab Oil & Gas Reservoir Geol & Exploita, Chengdu 610500, Peoples R China
2.SW Petr Univ, Sch Chem & Chem Engn, Chengdu 610500, Peoples R China
3.Liaoning Entry Exit Inspect & Quarantine Bur, Dalian 116001, Peoples R China
4.Chinese Acad Sci, Dalian Inst Chem Phys, Dept Instrumentat & Analyt Chem, Dalian 116023, Peoples R China

Recommended Citation:
Xiong, Yan,Ye, Zhongbin,Xu, Jing,et al. An integrated micro-volume fiber-optic sensor for oxygen determination in exhaled breath based on iridium(III) complexes immobilized in fluorinated xerogels[J]. ANALYST,2013,138(6):1819-1827.
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