Saponite-anthocyanin derivatives: The role of organoclays in pigment photostability - Archive ouverte HAL Access content directly
Journal Articles Applied Clay Science Year : 2020

Saponite-anthocyanin derivatives: The role of organoclays in pigment photostability

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Abstract

Hybrid pigments based on organo-saponite (cetyltrimethyl ammonium bromide (CTAB-Sap) and a commercial anthocyanin (ACN) dye, Crystal Red Grape, were prepared. The interactions between organic dye guest and hosts (including saponite and organo-saponite) were investigated by X-ray diffraction, transmission electron microscopy and Fourier transform infrared spectroscopy. The pigments exhibit different colors function of their host-guest interactions. The blue color of organo-clay-anthocyanin indicates the stabilization of quinoidal base form of the dye. The hybrids have good stability against visible light irradiation and basic pH conditions. These dyed materials are environmentally friendly and can be promising candidates in different application fields.
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Dates and versions

hal-02887368 , version 1 (02-07-2020)

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Luciano C.B. Lima, Fabrícia C Silva, Edson C Silva-Filho, Maria G Fonseca, Guanzheng Zhuang, et al.. Saponite-anthocyanin derivatives: The role of organoclays in pigment photostability. Applied Clay Science, 2020, 191, pp.105604. ⟨10.1016/j.clay.2020.105604⟩. ⟨hal-02887368⟩
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