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International Letters of Chemistry, Physics and Astronomy
Volume 32

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Static Quenching of Ruthenium(II)-Polypyridyl Complexes by Gallic Acid and Quercetin in Aqueous and Micellar Media

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Abstract:

The reactions of gallic acid and quercetin with the excited state Ru(II) complexes proceed through photoinduced electron transfer reaction in sodium dodecyl sulfate (SDS) and aqueous media at pH 11 and has been studied by luminescence quenching technique. The static nature of quenching is confirmed from the ground state absorption studies in both the media. The observed quenching rate constant (kq) values are sensitive to the nature of the ligand, medium and the structure of the quenchers. The electrostatic interaction of the cationic complexes with the anionic micelle reduces the kq values in SDS compared to that in aqueous medium.

Info:

Periodical:
International Letters of Chemistry, Physics and Astronomy (Volume 32)
Pages:
21-31
DOI:
10.18052/www.scipress.com/ILCPA.32.21
Citation:
D. Sheeba and G. A. G. Raj, "Static Quenching of Ruthenium(II)-Polypyridyl Complexes by Gallic Acid and Quercetin in Aqueous and Micellar Media", International Letters of Chemistry, Physics and Astronomy, Vol. 32, pp. 21-31, 2014
Online since:
Apr 2014
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