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基于 PtOEP-C6/Poly (St-TFEMA) 薄膜的比率型传感器用于自动溶解氧含量检测。

Ratiometric Sensor Based on PtOEP-C6/Poly (St-TFEMA) Film for Automatic Dissolved Oxygen Content Detection.

机构信息

School of Physics, Harbin Institute of Technology, Harbin 150001, China.

School of Instrumentation Science and Engineering, Harbin Institute of Technology, Harbin 150001, China.

出版信息

Sensors (Basel). 2020 Oct 29;20(21):6175. doi: 10.3390/s20216175.

DOI:10.3390/s20216175
PMID:33138300
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7663556/
Abstract

A ratiometric oxygen sensor based on a platinum octaethylporphyrin (PtOEP)-coumarin 6 (C6)/poly (styrene-trifluoroethyl methacrylate) (poly (St-TFEMA)) film was developed for automatic dissolved oxygen (DO) detection. The oxygen-sensing film according to the dynamic quenching mechanism was prepared by embedding platinum octaethylporphyrin (PtOEP) and coumarin 6 (C6) in poly (styrene-trifluoroethyl methacrylate) (poly (St-TFEMA)). The optical parameter () was defined as the ratio of the oxygen-insensitive fluorescence from C6 to the oxygen-sensitive phosphorescence from PtOEP. A calibration equation expressing the correlation between the values and DO content described by a linear function was obtained. A program based on the Labview software was developed for monitoring the real-time DO content automatically. The influence of the excitation intensity and fluctuation on the values and the direct luminescence signal (integration areas) was compared, verifying the strong anti-interference ability of the sensor. The detection limit of the sensor was determined to be 0.10 (1) mg/L. The switching response time and recovery time of the sensor were 0.4 and 1.3 s, respectively. Finally, the oxygen sensor was applied to the investigation of the kinetic process of the DO content variation, which revealed an exponential relationship with time.

摘要

一种基于铂八乙基卟啉（PtOEP）-香豆素 6（C6）/聚（苯乙烯-三氟乙基甲基丙烯酸酯）（poly（St-TFEMA））膜的比率型氧传感器被开发用于自动溶解氧（DO）检测。根据动态猝灭机制，通过嵌入铂八乙基卟啉（PtOEP）和香豆素 6（C6）在聚（苯乙烯-三氟乙基甲基丙烯酸酯）（poly（St-TFEMA））中制备氧敏感膜。光学参数（）被定义为 C6 的氧不敏感荧光与 PtOEP 的氧敏感磷光之间的比率。获得了一个表示 值与 DO 含量之间相关性的校准方程，该方程由线性函数描述。基于 Labview 软件开发了一个程序，用于自动监测实时 DO 含量。比较了激发强度和波动对 值和直接发光信号（积分面积）的影响，验证了传感器的强抗干扰能力。确定传感器的检测限为 0.10（1）mg/L。传感器的开关响应时间和恢复时间分别为 0.4 和 1.3 s。最后，将氧传感器应用于 DO 含量变化动力学过程的研究，结果表明与时间呈指数关系。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/af4d/7663556/41d68441e1d4/sensors-20-06175-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/af4d/7663556/8c2eb3d2c05a/sensors-20-06175-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/af4d/7663556/7698f5a4574e/sensors-20-06175-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/af4d/7663556/8cf3c5b5f7a5/sensors-20-06175-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/af4d/7663556/080ed9a06fea/sensors-20-06175-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/af4d/7663556/dbffd7618b67/sensors-20-06175-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/af4d/7663556/47d9b3023cb3/sensors-20-06175-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/af4d/7663556/d646795ef61c/sensors-20-06175-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/af4d/7663556/6c701fc4e524/sensors-20-06175-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/af4d/7663556/41d68441e1d4/sensors-20-06175-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/af4d/7663556/8c2eb3d2c05a/sensors-20-06175-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/af4d/7663556/7698f5a4574e/sensors-20-06175-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/af4d/7663556/8cf3c5b5f7a5/sensors-20-06175-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/af4d/7663556/080ed9a06fea/sensors-20-06175-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/af4d/7663556/dbffd7618b67/sensors-20-06175-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/af4d/7663556/47d9b3023cb3/sensors-20-06175-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/af4d/7663556/d646795ef61c/sensors-20-06175-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/af4d/7663556/6c701fc4e524/sensors-20-06175-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/af4d/7663556/41d68441e1d4/sensors-20-06175-g009.jpg

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