A dissolved oxygen sensor based on composite fluorinated xerogel doped with platinum porphyrin dye.
A new functional fluorinated material taking n-propyltrimethoxysilicane (n-propyl-TriMOS) and 3,3,3-trifluoropropyltrimethoxysilicane (TFP-TriMOS) as precursors was applied to construct a novel dissolved oxygen sensing film. The sensing film was fabricated by dip-coating the functional fluorinated material-doped [meso-tetrakis(pentafluorophenyl) porphyinato] platinum(II) (PtF(20) TPP) onto a glass slide. The oxygen sensing film exhibited a good linear relationship, fast response time, long stability and high sensitivity to dissolved oxygen. In the developed optical oxygen sensor, an LED and a photodiode were composed to construct a back-detection optical system not needing an optical fiber based on fluorescence intensity detection. The smart optical oxygen sensor based on the PtF(20) TPP fluorescence quenching possesses the advantages of portability and low cost and can be applied to the dissolved oxygen in situ monitoring in seawater.
Zhao
Yun
Y
Department of Chemistry and Key Laboratory of Analytical Sciences of the Ministry of Education, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, People's Republic of China.
Ye
Tingxiu
T
Chen
Haixu
H
Huang
Dapeng
D
Zhou
Tingyao
T
He
Chunyan
C
Chen
Xi
X
D004396:Coloring Agents / Q000737:chemistry*; D005453:Fluorescence; D005461:Fluorine / Q000737:chemistry*; D010100:Oxygen / Q000032:analysis* / Q000737:chemistry; D010984:Platinum / Q000737:chemistry*; D011166:Porphyrins / Q000737:chemistry*
D004396:Coloring Agents; D011166:Porphyrins; D005461:Fluorine; D010984:Platinum; D010100:Oxygen