Carminic acid, a natural hydrophilic dye extensively used in the food and cosmetic industries, is converted in hydrophobic dyes by acetylation or pivaloylation. These derivatives are successfully used as biocolourants for rubber objects. In this paper, spectroscopic properties of the carminic acid derivatives in dimethyl sulfoxide and in polybutylacrylate are studied by means of photoluminescence and time-resolved photoluminescence decays, revealing a hypsochromic effect due to the presence of bulky substituents as the acetyl or pivaloyl groups. Molecular mechanics and density functional theory calculations confirm the disruption of planarity between the sugar ring and the anthraquinoid system determined by the esterification

Gabrielli, L., Origgi, D., Zampella, G., Bertini, L., Bonetti, S., Vaccaro, G., et al. (2018). Towards hydrophobic carminic acid derivatives and their incorporation in polyacrylates. ROYAL SOCIETY OPEN SCIENCE, 5(7) [10.1098/rsos.172399].

Towards hydrophobic carminic acid derivatives and their incorporation in polyacrylates

Gabrielli, Luca;Origgi, Davide;Zampella, Giuseppe;Bertini, Luca;Bonetti, Simone;Vaccaro, Gianfranco;Meinardi, Francesco;Simonutti, Roberto
;
Cipolla, Laura
2018

Abstract

Carminic acid, a natural hydrophilic dye extensively used in the food and cosmetic industries, is converted in hydrophobic dyes by acetylation or pivaloylation. These derivatives are successfully used as biocolourants for rubber objects. In this paper, spectroscopic properties of the carminic acid derivatives in dimethyl sulfoxide and in polybutylacrylate are studied by means of photoluminescence and time-resolved photoluminescence decays, revealing a hypsochromic effect due to the presence of bulky substituents as the acetyl or pivaloyl groups. Molecular mechanics and density functional theory calculations confirm the disruption of planarity between the sugar ring and the anthraquinoid system determined by the esterification
Articolo in rivista - Articolo scientifico
Scientifica
Biocolourants; Carminic acid; Density functional theory; Photoluminescence; Polyacrylates; Multidisciplinary
English
Gabrielli, L., Origgi, D., Zampella, G., Bertini, L., Bonetti, S., Vaccaro, G., et al. (2018). Towards hydrophobic carminic acid derivatives and their incorporation in polyacrylates. ROYAL SOCIETY OPEN SCIENCE, 5(7) [10.1098/rsos.172399].
Gabrielli, L; Origgi, D; Zampella, G; Bertini, L; Bonetti, S; Vaccaro, G; Meinardi, F; Simonutti, R; Cipolla, L
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/10281/218417
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