Molecular photothermal activation assisted synthesis, and orthogonal assembly of metal-organic-framework

Yossi, Weizmann, Aritra, Biswas, Nir, Lemcoff, Ofir, Shelonchik
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引用次数: 0

Abstract

Temperature is a fundamental parameter in any chemical process, affecting reaction rates, selectivity, and more. Typically, chemists think of temperature as a homogeneous property, remaining unchanged throughout the reaction in space and time. Recently, photothermal materials have been emerging as an exciting tool opening new paths for innovative research, challenging the viewpoint described above. Herein, we develop a synthesis and in-situ assembly technique for metal-organic frameworks (MOFs) based on the distinct heterogeneous heating of photothermal materials under visible light. Notably, a simple cobalt chloride molecular complex was utilized as an efficient and stable light-to-heat converter for initial MOF formation. A thorough investigation of the assembly mechanism revealed the key role photothermal activation had in the formation of the superstructures. Finally, palladium nanoparticles (NP) were utilized as competing photothermal agents shedding light on the dynamics between different heat sources within a reaction and resulting in MOF-NP composites. This work highlights the versatility of the photothermal approach in the synthesis of advanced materials introducing a promising route to the micro/nano assembly of different materials.
分子光热激活辅助合成和金属有机框架的正交组装
温度是任何化学过程中的基本参数,会影响反应速率、选择性等。通常情况下,化学家认为温度是一种均匀特性,在整个反应过程中在空间和时间上都保持不变。最近,光热材料作为一种令人兴奋的工具崭露头角,为创新研究开辟了新的道路,对上述观点提出了挑战。在此,我们基于光热材料在可见光下的独特异相加热,开发了一种金属有机框架(MOFs)的合成和原位组装技术。值得注意的是,我们利用一种简单的氯化钴分子复合物作为高效、稳定的光热转换器,实现了 MOF 的初步形成。对组装机制的深入研究揭示了光热活化在超结构形成中的关键作用。最后,利用钯纳米粒子(NP)作为竞争性光热剂,揭示了反应过程中不同热源之间的动态变化,并由此产生了 MOF-NP 复合材料。这项工作凸显了光热法在合成先进材料方面的多功能性,为不同材料的微/纳米组装提供了一条前景广阔的途径。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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