Looking into the Photo-stability of Eosin by Electrochemical Methods

0549334 - ÚFCH JH 2024 RIV CZ eng C - Konferenční příspěvek (zahraniční konf.)
Sabatini, F. - Sokolová, Romana - Degano, I.
Looking into the Photo-stability of Eosin by Electrochemical Methods.
Sborník přednášek mezinárodní odborné konference XL. Moderní Elektrochemické Metody. Ústí nad Labem: Best Servis, 2021 - (Navrátil, T.; Fojta, M.; Schwarzová, K.), s. 206-209. ISBN 978-80-905221-8-3.
[Moderní Elektrochemické Metody /40./. Jetřichovice (CZ), 08.11.2021-12.11.2021]
Institucionální podpora: RVO:61388955
Klíčová slova: Eosin * Synthetic dye * UV-Vis spectroelectrochemistry
Obor OECD: Electrochemistry (dry cells, batteries, fuel cells, corrosion metals, electrolysis)

Eosin Y is a synthetic organic dye belonging to the xanthene family. Its bright and fluorescent
pink hue attracted and intrigued the painters of the 19th century, who experimented eosin as
pigment lake (often called Geranium lake) in their paintings. Nevertheless, eosin coloration is
as beautiful as unstable, and examples of work of arts with faded hues have been documented.
Eosin is not only photo-sensitive but also pH sensitive, making its study very complex. In this
work, the combination of electrochemical and spectroscopic techniques revealed to be effective
for correlating the physical evidence of eosin fading with its chemical degradation.
Trvalý link: http://hdl.handle.net/11104/0325350