Oxygen gas optrode based on microstructured polymer optical fiber segment

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• 作者：Xinghua Yang^a ; ^{Yangxh@hrbeu.edu.cn"" rel=""nofollow} ; Lirong Peng^a ; Libo Yuan^a ; Pingping Teng^b ; ¹ ; ^{Pingpingteng@gmail.com"" rel=""nofollow} ; Fengjun Tian^a ; Le Li^a ; Shenzi Luo^a
• 关键词：Oxygen optrode ; Microstructured optical fiber ; Fluorescence ; Sol– ; gel
• 刊名：Optics Communications
• 出版年：2011
• 出版时间：15 June 2011
• 年：2011
• 卷：284
• 期：13
• 页码：3462-3466
• 全文大小：920 K

文摘

In this article, we first propose a novel type of oxygen gas optrode by forming fluorophore doped sensing film in the array microholes with the characteristics of microstructured optical fiber (MOF) segment. Comparing with the conventional O₂ detecting method, this slender shaped optrode shows potential in trace amount of O₂ sensing and online O₂ monitoring. Organical silicate gel or plastified cellulose acetate are chosen as sensing films and tris (4,7-diphenyl-1,10-phenathroline) ruthenium(II) dichloride ([Ru(dpp)₃]Cl₂) or meso-tetraphenylporphyin (TPP) as quenching fluorophores. From the experimental results, we find [Ru(dpp)₃]²⁺–Gel–MOF optrode has favorable sensing characteristics, and the Stern–Volmer plots are linear in the full concentration range of O₂ (0–100 % v/v). The ratio of I₀/I₁₀₀, where I₀ and I₁₀₀ respectively represents the fluorescence intensities of the optrode exposed to 100 % N₂ and 100 % O₂, as a sensitivity of the optrode is 10.8. Simultaneously, the optrode can make a quick response within 50 ms.