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How is the ruthenium dye entrapped in the sol-gel used as an oxygen sensor?

April 26, 2017dye entrapped oxygen ruthenium sensor sol-gel Used

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How is the ruthenium dye entrapped in the sol-gel used as an oxygen sensor?

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When the ruthenium dye molecule is excited by a blue (470 nm) LED, it becomes sensitive to oxygen and the amount of fluorescence released by the molecule is decreased by the amount of collision between the oxygen molecule and the ruthenium dye.