In Situ ESR and UV/Vis Spectroelectrochemical Study of Eosin Y Upon Reduction with and without Zn(II) Ions | Zendy

Goux A. | Zendy; Pauporté T. | Zendy; Lincot D. | Zendy; Dunsch L. | Zendy

AI Assistant Blog Pricing

Home ZAIA Blog

Premium

In Situ ESR and UV/Vis Spectroelectrochemical Study of Eosin Y Upon Reduction with and without Zn(II) Ions

Author(s) -

Goux A.,

Pauporté T.,

Lincot D.,

Dunsch L.

Publication year - 2007

Publication title -

chemphyschem

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.016

H-Index - 140

eISSN - 1439-7641

pISSN - 1439-4235

DOI - 10.1002/cphc.200700009

Subject(s) - electron paramagnetic resonance , chemistry , semiquinone , eosin y , spectroscopy , electrochemistry , ion , eosin , zinc , photochemistry , aqueous solution , platinum , ultraviolet visible spectroscopy , inorganic chemistry , chloride , nuclear chemistry , electrode , redox , catalysis , nuclear magnetic resonance , photocatalysis , staining , organic chemistry , medicine , physics , quantum mechanics , pathology

The electroreduction of eosin Y on a platinum electrode in deaerated slightly acidic aqueous 0.1 mol L −1 potassium chloride medium is followed in situ by electron spin resonance (ESR) spectroscopy and UV/Vis spectroscopy. The electrochemical formation of a semiquinone radical is proved by both the appearance of an absorbing band at 408 nm, and a strong ESR signal observed during a negative‐going scan. The system is also studied in the presence of Zn II ions due to its importance for understanding the growth mechanism of nanostructured ZnO/Eosin Y hybrid films by electrodeposition; under such conditions the ESR and UV/Vis response of the semiquinone radical is not observed. Zinc (II) ions form a complex with the dye, which is reduced by a fast two‐electron process.

This content is not available in your region!

Continue researching here.

Having issues? You can contact us here

Accelerating Research