Amphiphilic Fluorinated Polymer Nanoparticle Film Formation and Dissolved Oxygen Sensing Application

India-Japan Expert Group Meeting on Biomolecular Electronics & Organic Nanotechnology for Environment Preservation

物理学;生物科学;生态环境科学

Gao, Yu^1 ; Zhu, Huie^1 ; Yamamoto, Shunsuke^1 ; Miyashita, Tokuji^1 ; Mitsuishi, Masaya^1

Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai

980-8577, Japan^1

关键词: Dissolved oxygen concentrations;    Dissolved oxygen sensing;    Fluorinated polymers;    Miscible solvent;    Nanoparticle films;    Oxygen sensitivity;    Smart surfaces;    Superhydrophobic;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/704/1/012009/pdf
DOI  :  10.1088/1742-6596/704/1/012009

来源: IOP

【 摘 要 】

Fluorinated polymer nanoparticle films were prepared by dissolving amphiphilic fluorinated polymer, poly (N-1H, 1H-pentadecafluorooctylmethacrylamide) (pC7F15MAA) in two miscible solvents (AK-225 and acetic acid). A superhydrophobic and porous film was obtained by dropcasting the solution on substrates. With higher ratios of AK-225 to acetic acid, pC7F15MAA was densified around acetic acid droplets, leading to the formation of pC7F15MAA nanoparticles. The condition of the nanoparticle film preparation was investigated by varying the mixing ratio or total concentration. A highly sensitive dissolved oxygen sensor system was successfully prepared utilizing a smart surface of superhydrophobic and porous pC7F15MAA nanoparticle film. The sensitivity showed I0/I40= 126 in the range of dissolved oxygen concentration of 0 ∼ 40 mg L-1. The oxygen sensitivity was compared with that of previous reports.