Hybrid materials based on montmorillonite, a cationic polymer and carminic acid were prepared. The surface charge of montmorillonite was inversed thanks to the cationic polymer, polydiallyldimethylammonium chloride. Samples were characterized by a set of different techniques including Infrared (IR) and Nuclear Magnetic Resonance (NMR) spectroscopies to highlight the nature of the interactions between the organic and inorganic parts. The photo-stability of the samples was tested for different durations, and L*a*b* parameters were measured. It was possible to propose an approach for the degradation mechanism of the supported dye thanks to EPR (electron paramagnetic resonance) spectroscopy. The experimental data were in agreement with the theoretical periodic DFT calculations where a molecular scheme of the adsorption complex was proposed, and the importance of hydration on the stability of the adsorption complex highlighted.

制备了基于蒙脱土，阳离子聚合物和氨基甲酸的杂化材料。由于阳离子聚合物聚二烯丙基二甲基氯化铵，使蒙脱石的表面电荷反转。样品通过一系列不同的技术进行了表征，包括红外（IR）和核磁共振（NMR）光谱，以突出有机和无机部分之间相互作用的性质。测试了样品在不同持续时间内的光稳定性，并测量了L * a * b *参数。借助EPR（电子顺磁共振）光谱技术，可以提出一种用于负载型染料降解机理的方法。实验数据与理论周期DFT计算结果一致，其中提出了吸附复合物的分子方案，