National Institute of Chemistry, Hajdrihova 19, 1000 Ljubljana, Slovenia.
Faculty of Inorganic Chemistry and Technology, University of Ljubljana, Večna pot 113, 1000 Ljubljana, Slovenia.
Molecules. 2022 Dec 28;28(1):253. doi: 10.3390/molecules28010253.
One of the biggest advantages of MOFs is the possibility of modifying their properties and tuning their inherent activity (i.e., sorption, storage, catalytic activity etc.). Textural properties can be tuned by manipulating process and compositional parameters, among which, the effect of additives can be even further distinguished among them based on the way they affect these properties. Beyond the effect that additives have on the size and morphology of nanoMOFs, there is also an effect on properties via creating point defects-missing linker and missing node defects. In this study, we investigated the effect of four monotopic acid modulators-formic, acetic, dichloroacetic and propionic acid, their concentration and the heating type (conventional and microwave-MW) on the size, morphology and textural properties of a recently discovered bioNICS1. It was confirmed that the proposed seesaw model for the controlled size of nanoMOF crystals is less applicable in the case of MW-assisted synthesis, in comparison to conventional heating. In the case of formic acid- and propionic acid-modified materials, we demonstrated that the type of additive plays a different role in crystal growth and generation of defects, implying high tunability being crucial for a material's structure-property performance optimization.
MOFs 的最大优势之一是能够改变其性质并调整其固有活性（例如，吸附、存储、催化活性等）。通过操纵工艺和组成参数可以调整结构性质，其中，根据添加剂影响这些性质的方式，可以进一步区分添加剂对纳米 MOF 的大小和形态的影响。除了添加剂对纳米 MOF 的大小和形态的影响外，它们还可以通过形成点缺陷（缺失配体和节点缺陷）来影响性质。在这项研究中，我们研究了四种单齿酸调节剂（甲酸、乙酸、二氯乙酸和丙酸）、它们的浓度以及加热方式（常规加热和微波 MW）对最近发现的生物 NICS1 的大小、形态和结构性质的影响。结果证实，与常规加热相比，提出的用于控制纳米 MOF 晶体尺寸的跷跷板模型在 MW 辅助合成的情况下适用性较差。在甲酸和丙酸改性材料的情况下，我们证明了添加剂的类型在晶体生长和缺陷生成中起着不同的作用，这意味着高可调节性对于材料的结构-性能优化至关重要。
