通过使用PtOEP/聚（甲基丙烯酸甲酯-共-三氟甲基丙烯酸乙酯）传感膜实现高灵敏度和高精度溶解氧（DO）检测。

High sensitivity and accuracy dissolved oxygen (DO) detection by using PtOEP/poly(MMA-co-TFEMA) sensing film.

作者信息

Zhang Ke, Zhang Honglin, Wang Ying, Tian Yanqing, Zhao Jiupeng, Li Yao

机构信息

School of Chemistry and Chemical Engineering, Harbin Institute of Technology, 150001 Harbin, China.

South University of Science and Technology of China, Shenzhen 518000, China.

出版信息

Spectrochim Acta A Mol Biomol Spectrosc. 2017 Jan 5;170:242-6. doi: 10.1016/j.saa.2016.07.028. Epub 2016 Jul 18.

DOI:10.1016/j.saa.2016.07.028

PMID:27450122

Abstract

Fluorinated acrylate polymer has received great interest in recent years due to its extraordinary characteristics such as high oxygen permeability, good stability, low surface energy and refractive index. In this work, platinum octaethylporphyrin/poly(methylmethacrylate-co-trifluoroethyl methacrylate) (PtOEP/poly(MMA-co-TFEMA)) oxygen sensing film was prepared by the immobilizing of PtOEP in a poly(MMA-co-TFEMA) matrix and the technological readiness of optical properties was established based on the principle of luminescence quenching. It was found that the oxygen-sensing performance could be improved by optimizing the monomer ratio (MMA/TFEMA=1:1), tributylphosphate(TBP, 0.05mL) and PtOEP (5μg) content. Under this condition, the maximum quenching ratio I0/I100 of the oxygen sensing film is obtained to be about 8.16, Stern-Volmer equation is I0/I=1.003+2.663[O2] (R(2)=0.999), exhibiting a linear relationship, good photo-stability, high sensitivity and accuracy. Finally, the synthesized PtOEP/poly(MMA-co-TFEMA) sensing film was used for DO detection in different water samples.

摘要

近年来，含氟丙烯酸酯聚合物因其具有高透氧性、良好的稳定性、低表面能和折射率等非凡特性而备受关注。在本工作中，通过将铂八乙基卟啉（PtOEP）固定在聚（甲基丙烯酸甲酯 - 共 - 甲基丙烯酸三氟乙酯）（PtOEP/聚（MMA - 共 - TFEMA））基质中制备了氧传感膜，并基于发光猝灭原理确定了光学性能的技术就绪情况。研究发现，通过优化单体比例（MMA/TFEMA = 1:1）、磷酸三丁酯（TBP，0.05mL）和PtOEP（5μg）的含量，可以提高氧传感性能。在此条件下，氧传感膜的最大猝灭比I0/I100约为8.16，Stern - Volmer方程为I0/I = 1.003 + 2.663[O2]（R² = 0.999），呈现出线性关系，具有良好的光稳定性、高灵敏度和准确性。最后，将合成的PtOEP/聚（MMA - 共 - TFEMA）传感膜用于不同水样中的溶解氧（DO）检测。