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CaCO3 Crystals with Unique Morphologies Controlled by the Hydrogen-Bonded Supramolecular Assemblies of Ureido-Pyrimidinone-Amino Acid Derivatives
Langmuir ( IF 3.7 ) Pub Date : 2022-10-18 , DOI: 10.1021/acs.langmuir.2c02307 Yuanjing Gan 1 , Xiaosen Pan 1 , Jie Li 1 , Miaomiao Liu 1 , Boyue Liu 2 , Meng Gao 1 , Ning Ma 3 , Hao Wei 3
Langmuir ( IF 3.7 ) Pub Date : 2022-10-18 , DOI: 10.1021/acs.langmuir.2c02307 Yuanjing Gan 1 , Xiaosen Pan 1 , Jie Li 1 , Miaomiao Liu 1 , Boyue Liu 2 , Meng Gao 1 , Ning Ma 3 , Hao Wei 3
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Biomineral materials such as nacre of shells exhibit high mechanical strength and toughness on account of their unique “brick-mortar” multilayer structure. 2-Ureido-4[1H]-pyrimidinone (UPy) derivatives with different types of end groups, due to the self-complementary quadruple hydrogen bonds and abundant Ca2+ binding sites, can easily self-assemble into supramolecular aggregates and act as templates and skeleton in the process of inducing mineral crystallization. In this work, UPy derivatives were used as templates to induce the mineralization and growth of CaCO3 through a CO2 diffusion method. The morphology of CaCO3 crystals was modulated and analyzed by adjusting the synthesizing parameters including Ca2+ concentration, pH, and end groups. The results showed that, by the regulatory role of the mineralization template, it was easier to realize the multilayer crystal structure at a lower concentration of Ca2+ (less than 0.01 mol L–1). Under alkaline regulation, the quadruple hydrogen bonds would be destroyed, and the template’s regulation effect on the morphology of CaCO3 crystals would be weakened. Moreover, by comparing different types of end groups, it was proven that the UPy derivatives with carboxylic acid groups (−COOH) played a crucial role in the process of CaCO3 crystallization with unique morphologies.
中文翻译：
由脲基-嘧啶酮-氨基酸衍生物的氢键超分子组装控制的具有独特形态的 CaCO3 晶体
珍珠质贝壳等生物矿物材料因其独特的“砖-砂浆”多层结构而表现出高机械强度和韧性。具有不同类型端基的2-Ureido-4[1 H ]-pyrimidinone (UPy)衍生物由于具有自互补的四重氢键和丰富的Ca 2+结合位点，可以很容易地自组装成超分子聚集体并作为诱导矿物结晶过程中的模板和骨架。在这项工作中，UPy 衍生物被用作模板，通过 CO 2扩散法诱导 CaCO 3的矿化和生长。通过调整包括Ca在内的合成参数来调制和分析CaCO 3晶体的形貌2+浓度、pH 值和端基。结果表明，通过矿化模板的调节作用，在较低的Ca 2+浓度（小于0.01 mol L –1）下更容易实现多层晶体结构。在碱性调控下，四重氢键被破坏，模板对CaCO 3晶体形貌的调控作用减弱。此外，通过比较不同类型的端基，证明具有羧酸基团（-COOH）的UPy衍生物在具有独特形貌的CaCO 3结晶过程中起着至关重要的作用。
更新日期：2022-10-18
中文翻译：
由脲基-嘧啶酮-氨基酸衍生物的氢键超分子组装控制的具有独特形态的 CaCO3 晶体
珍珠质贝壳等生物矿物材料因其独特的“砖-砂浆”多层结构而表现出高机械强度和韧性。具有不同类型端基的2-Ureido-4[1 H ]-pyrimidinone (UPy)衍生物由于具有自互补的四重氢键和丰富的Ca 2+结合位点，可以很容易地自组装成超分子聚集体并作为诱导矿物结晶过程中的模板和骨架。在这项工作中，UPy 衍生物被用作模板，通过 CO 2扩散法诱导 CaCO 3的矿化和生长。通过调整包括Ca在内的合成参数来调制和分析CaCO 3晶体的形貌2+浓度、pH 值和端基。结果表明，通过矿化模板的调节作用，在较低的Ca 2+浓度（小于0.01 mol L –1）下更容易实现多层晶体结构。在碱性调控下，四重氢键被破坏，模板对CaCO 3晶体形貌的调控作用减弱。此外，通过比较不同类型的端基，证明具有羧酸基团（-COOH）的UPy衍生物在具有独特形貌的CaCO 3结晶过程中起着至关重要的作用。
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