Fiber optic nickel ion sensor based on direct ligand immobilization

R. Raghunandhan; L. H. Chen; C. C. Chan

doi:10.1117/12.2263431

23 April 2017 Fiber optic nickel ion sensor based on direct ligand immobilization

R. Raghunandhan, L. H. Chen, C. C. Chan

Proceedings Volume 10323, 25th International Conference on Optical Fiber Sensors; 103232K (2017) https://doi.org/10.1117/12.2263431
Event: 25th International Conference on Optical Fiber Sensors, 2017, Jeju, Korea, Republic of

Abstract

An inline intermodal no core fiber (NCF) sensor based on direct ligand immobilization for detection of nickel ions (Ni²⁺) is proposed. Covalently immobilized nickel specific ligand, Meso-Tetra(4-carboxyphenyl)porphine, on the NCF surface serves as adsorption site for Ni²⁺ and can induce ambient refractive index (RI) change around the NCF on occurrence of binding events. The change in RI results in spectrum wavelength shifts, which was measured for continuous monitoring of Ni²⁺ concentration. The proposed sensor was observed to exhibit a sensitivity of 121.03 nm/mM towards Ni²⁺ ions.

Citation Download Citation

R. Raghunandhan, L. H. Chen, and C. C. Chan "Fiber optic nickel ion sensor based on direct ligand immobilization", Proc. SPIE 10323, 25th International Conference on Optical Fiber Sensors, 103232K (23 April 2017); https://doi.org/10.1117/12.2263431

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