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Type |
Oral Presentation |
Area |
Oral Presentation of Young Inorganic Chemists |
Room No. |
Room 401+402 |
Time |
THU 10:00-10:10 |
Code |
INOR.O-7 |
Subject |
Building Principles of Meta-MOF (Metal-Organic Framework) |
Authors |
Eunji Jin, Dongwook Kim1, Hosoowi Lee2, Woo-Dong Jang3, Myoung Soo Lah, Seung Kyu Min*, Wonyoung Choe* Department of Chemistry, Ulsan National Institute of Science and Technology, Korea 1Center for Catalytic Hydrocarbon Functionalization, Institute for Basic Science, Korea 2Department of Chemistry, Colloge of Science, Korea 3Department of Chemistry, Yonsei University, Korea |
Abstract |
Mechanical metamaterials, artificial materials with counter-intuitive properties such as a negative Poisson’s ratio, not exhibited by conventional materials that is found in nature. Unusual properties of metamaterials are obtained from structural geometry, not their composition. Rational design of mechanical metamaterials at the micro- and macroscale is interesting as found novel geometries. However, incorporating movable building blocks inside solids, thereby enabling us to manipulate the mechanical movement at the molecular scale, has been a difficult task. Here we report a metal-organic framework, self-assembled from a porphyrin linker and a new type of Zn-based secondary building unit, acted as a joint in hinged cube tessellation. We show that this material is indeed mechanical metamaterial, exhibiting auxetic behaviour through detailed structural analysis and theoretical calculation. This work demonstrates that the topology of the framework and flexible hinges inside the structure are intimately related to the mechanical properties of the material, providing a guideline for the rational design of mechanically responsive metal-organic frameworks. |
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E-mail |
jej2507@gmail.com |
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