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Characterization and Structure–Property Relationships of Organic–Inorganic Hybrid Composites Based on Aluminum–Magnesium Hydroxycarbonate and Azo Chromophore

1
Institute of Polymer and Dye Technology, Faculty of Chemistry, Lodz University of Technology, Stefanowskiego 12/16, 90-924 Lodz, Poland
2
Institute of General and Ecological Chemistry, Lodz University of Technology, Zeromskiego 116, 90-924 Lodz, Poland
*
Author to whom correspondence should be addressed.
Molecules 2019, 24(5), 880; https://doi.org/10.3390/molecules24050880
Received: 26 December 2018 / Revised: 20 February 2019 / Accepted: 25 February 2019 / Published: 1 March 2019
(This article belongs to the Section Materials Chemistry)
In this study, novel organic–inorganic composites were prepared by the complexation of dicarboxylic azo dye (AD) with aluminum–magnesium hydroxycarbonate (AlMg–LH). This procedure provides an effective method for the stabilization of dicarboxylic organic chromophores on an AlMg−LH host. The structures of the hybrid composites were examined by X-ray diffraction (XRD), secondary ion mass spectrometry (TOF-SIMS), 27-Al solid-state nuclear magnetic resonance (NMR) spectroscopy, thermogravimetric analysis (TGA) and scanning transmission electron microscopy (STEM). The TOF-SIMS method was applied to investigate the metal–dye interactions and to monitor the thermal stability of the organic–inorganic complexes. Secondary ion mass spectrometry confirmed the presence of a characteristic peak for C18H10O5N2Mg22+, indicating that both carboxylic groups interacted with AlMg−LH by forming complexes with two Mg2+ ions. Modification with hybrid pigments affected the crystal structure of the AlMg−LH mineral, as shown by the appearance of new peaks on the X-ray diffraction patterns. Adsorption of the dicarboxylic chromophore not only led to significantly enhanced solvent resistance but also improved the thermal and photostability of the hybrid pigments. We propose a possible arrangement of the azo dye in the inorganic matrix, as well as the presumed mechanism of stabilization. View Full-Text
Keywords: hybrid pigment; azo dye; aluminum–magnesium hydroxycarbonate; organic–inorganic composite; pigment stability hybrid pigment; azo dye; aluminum–magnesium hydroxycarbonate; organic–inorganic composite; pigment stability
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MDPI and ACS Style

Marzec, A.; Szadkowski, B.; Rogowski, J.; Maniukiewicz, W.; Zaborski, M. Characterization and Structure–Property Relationships of Organic–Inorganic Hybrid Composites Based on Aluminum–Magnesium Hydroxycarbonate and Azo Chromophore. Molecules 2019, 24, 880. https://doi.org/10.3390/molecules24050880

AMA Style

Marzec A, Szadkowski B, Rogowski J, Maniukiewicz W, Zaborski M. Characterization and Structure–Property Relationships of Organic–Inorganic Hybrid Composites Based on Aluminum–Magnesium Hydroxycarbonate and Azo Chromophore. Molecules. 2019; 24(5):880. https://doi.org/10.3390/molecules24050880

Chicago/Turabian Style

Marzec, Anna; Szadkowski, Bolesław; Rogowski, Jacek; Maniukiewicz, Waldemar; Zaborski, Marian. 2019. "Characterization and Structure–Property Relationships of Organic–Inorganic Hybrid Composites Based on Aluminum–Magnesium Hydroxycarbonate and Azo Chromophore" Molecules 24, no. 5: 880. https://doi.org/10.3390/molecules24050880

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