Authors: Dejoie, Catherine¹; Martinetto, Pauline¹; Dooryhée, Eric²; Van Elslande, Elsa³; Blanc, Sylvie⁴; Bordat, Patrice⁴; Brown, Ross⁴; Porcher, Florence⁵; Anne, Michel¹

Source: Applied Spectroscopy, Volume 64, Issue 10, Pages 274A-290A and 1073-1189 (October 2010) , pp. 1131-1138(8)

Publisher: Society for Applied Spectroscopy

Abstract:

The durability of an organic color and its resistance against external chemical agents and exposure to light can be significantly enhanced by hybridizing the natural dye with a mineral. In search for stable natural pigments, the present work focuses on the association of indigo blue with several zeolitic matrices (LTA zeolite, mordenite, MFI zeolite). The manufacturing of the hybrid pigment is tested under varying oxidizing conditions, using Raman and ultraviolet-visible (UV-Vis) spectrometric techniques. Blending indigo with MFI is shown to yield the most stable composite in all of our artificial indigo pigments. In the absence of defects and substituted cations such as aluminum in the framework of the MFI zeolite matrix, we show that matching the pore size with the dimensions of the guest indigo molecule is the key factor. The evidence for the high color stability of indigo@MFI opens a new path for modeling the stability of indigo in various alumino-silicate substrates such as in the historical Maya Blue pigment.

Keywords: INDIGO; ZEOLITE; PIGMENT; RAMAN SPECTROSCOPY; ULTRAVIOLET-VISIBLE SPECTROSCOPY; REFLECTANCE

Document Type: Research article

DOI: http://dx.doi.org/10.1366/000370210792973622

Affiliations: 1: Institut Néel, UPR 2940, CNRS, 25 avenue des Martyrs, BP 166, F-38042 Grenoble Cedex 9, France 2: Institut Néel, UPR 2940, CNRS, 25 avenue des Martyrs, BP 166, F-38042 Grenoble Cedex 9, France; National Synchrotron Light Source-II, Brookhaven National Laboratory, Upton, New York 11973 3: Centre de Recherche et de Restauration des Musées de France, CNRS, Palais du Louvre, Porte des Lions, 14 Quai François Mitterrand F-75001 Paris, France 4: Institut Pluridisciplinaire de Recherche sur l'Environnement et les Matériaux, CNRS, Hélioparc, 2 avenue Pierre Angot, F-64053 Pau Cedex 9, France 5: Laboratoire de Cristallographie, Résonnance Magnétique et Modélisation, UHP-CNRS, Faculté des Sciences BP 70239, F-54506 Vandoeuvre-les-Nancy, France; Laboratoire Léon Brillouin, CEA-CNRS, F-91191 Gif-sur-Yvette cedex, France

Publication date: 2010-10-01

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