Wang Ruiying, Zhang Shuang, Zhang Xi, Liu Qi
Beijing Key Laboratory of Plant Resources Research and Development, College of Chemistry and Materials Engineering, Beijing Technology and Business University, Beijing, China.
Beijing EWISH Testing Technology Co., Ltd, Beijing, China.
Dalton Trans. 2024 Jun 4;53(22):9406-9415. doi: 10.1039/d4dt00531g.
Pigments play a pivotal role in the cosmetic industry, in which the development of pigments with concurrent color diversity, hydrophobicity, biocompatibility and photostability remains a great challenge. Herein, we report organic-inorganic composite pigments synthesized a combination of organic dye anions (Ponceau SX and acid green (AG)), layered double hydroxides (LDHs) and octyltriethoxysilane (OTEOS) (denoted as O/Dye-LDHs: O/SX-LDHs and O/AG-LDHs).The prepared composite pigments were characterized a comprehensive investigation based on X-ray diffraction (XRD), scanning electron microscopy (SEM), energy-dispersive spectroscopy (EDS-mapping), Fourier transform infrared (FT-IR) spectroscopy, CIE 1976 *** color scales, static contact angle measurement and HET-CAM assay. The results confirm the successful intercalation of organic dye anions into the interlayer region of LDHs host-guest interactions and the surface modification of OTEOS on the layer surface, forming a new kind of hydrophobic organic-inorganic composite pigment with a sandwich structure. LDH layer protection and OTEOS coating play crucial roles in the high photostability, good hydrophobicity and satisfactory biocompatibility of pigments. In addition, O/Dye-LDHs exhibit rich color and color adjustability. Impressively, we applied mixture composite pigments with different O/SX-LDH-to-O/AG-LDH ratios to formulate an eye shadow cream, which present a series of popular and natural colours with water resistance to enhance one's attractiveness and appearance. This work provides a promising strategy for the design of safe and efficient composite pigments, demonstrating their potential application in the field of makeup.
颜料在化妆品行业中起着关键作用，然而，开发同时具备颜色多样性、疏水性、生物相容性和光稳定性的颜料仍然是一项巨大的挑战。在此，我们报道了通过有机染料阴离子（丽春红SX和酸性绿（AG））、层状双氢氧化物（LDHs）和辛基三乙氧基硅烷（OTEOS）合成的有机-无机复合颜料（表示为O/Dye-LDHs：O/SX-LDHs和O/AG-LDHs）。基于X射线衍射（XRD）、扫描电子显微镜（SEM）、能量色散光谱（EDS映射）、傅里叶变换红外（FT-IR）光谱、CIE 1976 *** 色标、静态接触角测量和HET-CAM试验，对制备的复合颜料进行了全面研究。结果证实，有机染料阴离子通过主客体相互作用成功插入LDHs的层间区域，并且OTEOS在层表面进行了表面改性，形成了一种具有三明治结构的新型疏水性有机-无机复合颜料。LDH层保护和OTEOS涂层在颜料的高光稳定性、良好疏水性和令人满意的生物相容性方面起着关键作用。此外，O/Dye-LDHs表现出丰富的颜色和颜色可调性。令人印象深刻的是，我们将不同O/SX-LDH与O/AG-LDH比例的混合复合颜料应用于配制眼影霜，其呈现出一系列流行且自然的颜色，并具有防水性，从而提升个人魅力和外观。这项工作为设计安全高效的复合颜料提供了一种有前景的策略，展示了它们在彩妆领域的潜在应用。
