Publication: Integrative approach to fluorescence-based oxygen sensing in polymer optical fibers with surface plasmon resonance
Date
2024
Authors
Hishamuddin A.H.
Zoolfakar A.S.
Azeman N.H.
Abu Bakar M.H.
Abdullah F.
Mohd Daniyal W.M.E.M.
A. Bakar A.A.
Zolkapli M.
Journal Title
Journal ISSN
Volume Title
Publisher
Elsevier B.V.
Abstract
This study demonstrates a technique to enhance oxygen (O2) concentration measurement by combining surface plasmon resonance (SPR) and fluorescence-based sensor on polymer optical fiber (POF). The SPR was generated using silver (Ag) and the fluorescence was generated by organic dye. Three fluorescence dyes were used, Tris (4, 7-diphenyl-1, 10-phenanthroline) ruthenium (II) dichloride ([Ru(dpp)3]2+), platinum octaethylporphyrin (PtOEP) and 5,10,15,20-tetrakis (pentafluorophenyl) 21 H,23H-porphine palladium (II) (PdTFPP). The sensor was tested in a gas chamber with different concentration level of O2. Sensitivity values for the fluorescence dyes for [Ru(dpp)?]�?, PtOEP, and PdTFPP were 0.0099 a.u/%, 0.0343 a.u/% and 0.05 a.u/% respectively. When SPR was implemented, the sensitivity values for Ag/[Ru(dpp)?]�?, Ag/PtOEP, and Ag/PdTFPP were 0.0589 nm/%, 0.0345 nm/%, and 0.118 nm/% respectively. PdTFPP and Ag/PdTFPP exhibit highest sensitivity in each experiment. Therefore, the further analysis for the sensing performance of PdTFPP and Ag/PdTFPP were held. As a result, Ag/PdTFPP exhibits lower limit of detection (LOD), and limit of quantification (LOQ) with 3.054 % and 9.254 %, respectively, with higher R2 of 0.9971 and lower mean standard deviation of 0.174, compared to PdTFPP 16.496 % and 49.988 % respectively, with R2 of 0.9211 and higher mean standard deviation of 2.003. This improvement can benefit researchers and professionals in medical diagnostics, environmental monitoring, and industrial process control by providing a more sensitive and accurate method for measuring O2 levels. ? 2024 Elsevier B.V.
Description
Keywords
Absorption spectroscopy , Atomic emission spectroscopy , Elastomers , Error statistics , Fiber optic sensors , Frequency bands , Ionomers , Oxygen sensors , Plastic optical fibers , Concentration Measurement , Fluorescence dyes , Fluorescence-based sensors , Mean standard deviation , Organic dye , Oxygen-sensing , Platinum octaethylporphyrin , Polymer optical fibre , Sensitivity values , Surface-plasmon resonance , Surface plasmon resonance