Fuchs Adrian, Mannhardt Petra, Hirschle Patrick, Wang Haoze, Zaytseva Irina, Ji Zhe, Yaghi Omar, Wuttke Stefan, Ploetz Evelyn
Department of Chemistry and Center for NanoScience (CeNS), LMU Munich, 81377, Munich, Germany.
Department of Chemistry, University of California-Berkeley, Materials Sciences Division, Lawrence Berkeley National Laboratory, Kavli Energy NanoSciences Institute at Berkeley, and Berkeley Global Science Institute, Berkeley, CA, 94720, USA.
Adv Mater. 2022 Jan;34(3):e2104530. doi: 10.1002/adma.202104530. Epub 2021 Nov 21.
At present, an enormous characterization gap exists between the study of the crystal structure of a material and its bulk properties. Individual particles falling within this gap cannot be fully characterized in a correlative manner by current methods. The authors address this problem by exploiting the noninvasive nature of optical microscopy and spectroscopy for the correlative analysis of metal-organic framework particles in situ. They probe the intrinsic as well as extrinsic properties in a correlated manner. The authors show that the crystal shape of MIL-88A strongly impacts its optical absorption. Furthermore, the question of how homogeneously water is distributed and adsorbed within one of the most promising materials for harvesting water from humid air, MOF-801, is addressed. The results demonstrate the considerable importance of the particle level and how it can affect the property of the material.
目前，材料晶体结构研究与其整体性质之间存在巨大的表征差距。处于这一差距范围内的单个颗粒，目前的方法无法以相关联的方式对其进行全面表征。作者利用光学显微镜和光谱学的非侵入性特性，对金属有机骨架颗粒进行原位相关分析，从而解决了这一问题。他们以相关联的方式探究了内在和外在性质。作者表明，MIL-88A的晶体形状对其光吸收有强烈影响。此外，还探讨了在从潮湿空气中收集水最有前景的材料之一MOF-801中，水是如何均匀分布和吸附的问题。结果证明了颗粒层面的重要性以及它如何影响材料的性质。
