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Absorption Characteristics of Ruthenium (Ru)-II Nanoparticles as a Dissolved Oxygen Sensing Material

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Abstract:

Ruthenium (Ru)-II complexes such as the Ruthenium-tris(4,7-diphenyl-1,10-phenanthroline)dichloride (Ru(dpp)32+) is commonly used for dissolved oxygen sensing because of their profound advantages such as visible absorption, a large Stokes’ shift, good fluorescence quantum yields, long excitation lifetimes and good oxygen quenching efficiency. In this study, we report on the absorption characteristics of (Ru(dpp)32+) when it is exposed to dissolved oxygen where the absorption was determined using ultraviolet-visible (UV-Vis) absorbance spectroscopy. The results show that by decreasing the concentration ofRu(ddp)32+, the absorbance remained constant at optical wavelength of 455nm while the intensity changes with the presence of dissolved oxygen. The sensitivity of detecting dissolved oxygen was proven to improve by increasing the amount of Ru(ddp)32+ used.

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Periodical:

Materials Science Forum (Volume 756)

Pages:

246-250

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.756.246

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Online since:

May 2013

Authors:

A. Farahiyah, P. Susthitha Menon, S. Shaari, S. Saharudin, M.S. Abdullah

Keywords:

Absorption, Dissolved Oxygen Sensor, Optical Sensor, Ruthenium (II)

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© 2013 Trans Tech Publications Ltd. All Rights Reserved

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