Photodecomposition of a target compound detected using an optical fibre long period grating coated with a molecularly imprinted titania thin film

R. Wong; S. Korposh; S.-W. Lee; S. W. James; R. P. Tatam

doi:10.1117/12.2192325

28 September 2015 Photodecomposition of a target compound detected using an optical fibre long period grating coated with a molecularly imprinted titania thin film

R. Wong, S. Korposh, S.-W. Lee, S. W. James, R. P. Tatam

Author Affiliations +

Proceedings Volume 9634, 24th International Conference on Optical Fibre Sensors; 96340Y (2015) https://doi.org/10.1117/12.2192325
Event: International Conference on Optical Fibre Sensors (OFS24), 2015, Curitiba, Brazil

Abstract

An optical fibre long period grating (LPG) coated with an inorganic molecularly imprinted thin film based on TiO₂ was used to measure in real time the photodecomposition of an organic target compound. The TiO₂ film was deposited onto the LPG using the aqueous liquid phase deposition method and its photo-catalytic properties were employed to decompose a porphyrin. The principle of operation is based on the measurements of the refractive index (RI) change of the TiO₂ thin film at the binding and removal of the imprinted organic compound.

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R. Wong, S. Korposh, S.-W. Lee, S. W. James, and R. P. Tatam "Photodecomposition of a target compound detected using an optical fibre long period grating coated with a molecularly imprinted titania thin film", Proc. SPIE 9634, 24th International Conference on Optical Fibre Sensors, 96340Y (28 September 2015); https://doi.org/10.1117/12.2192325

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