title: High sensitivity and accuracy dissolved oxygen (DO) detection by using PtOEP/poly(MMA-co-TFEMA) sensing film.
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.
authors.affiliation: School of Chemistry and Chemical Engineering, Harbin Institute of Technology, 150001 Harbin, China.
authors.forename: Ke
authors.initials: K
authors.lastname: Zhang
authors.affiliation: School of Chemistry and Chemical Engineering, Harbin Institute of Technology, 150001 Harbin, China.
authors.forename: Honglin
authors.initials: H
authors.lastname: Zhang
authors.affiliation: School of Chemistry and Chemical Engineering, Harbin Institute of Technology, 150001 Harbin, China.
authors.forename: Ying
authors.initials: Y
authors.lastname: Wang
authors.affiliation: South University of Science and Technology of China, Shenzhen 518000, China.
authors.forename: Yanqing
authors.initials: Y
authors.lastname: Tian
authors.affiliation: School of Chemistry and Chemical Engineering, Harbin Institute of Technology, 150001 Harbin, China. Electronic address: jiupengzhao11@126.com.
authors.forename: Jiupeng
authors.initials: J
authors.lastname: Zhao
authors.affiliation: Center for Composite Materials, Harbin Institute of Technology, Harbin 150001, China. Electronic address: yaoli@hit.edu.cn.
authors.forename: Yao
authors.initials: Y
authors.lastname: Li
keywords: Dissolved oxygen; Oxygen sensing film; Photostability; PtOEP/poly(MMA-co-TFEMA); Stern-Volmer equation