Metal-organic framework based on hinged cube tessellation as transformable mechanical metamaterial

Jin, Eunji; Lee, In Seong; Kim, Dong-Wook; Lee, Hosoowi; Jang, Woo Dong; Lah, Myoung Soo; Min, Seung Kyu; Choe, Wonyoung

doi:10.1126/sciadv.aav4119

Cited by 36 publications

(24 citation statements)

References 73 publications

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“…Using these STAR assemblies as building blocks, higher-ordered hierarchical architectures can be developed. Through careful structural design, STAR units (and combinations) could be tessellated, using polymers and linkers, to establish sophisticated 2D and 3D superstructures and metamaterials 40 , 41 ; these can dramatically alter the system response, through exotic and cooperative effects that cannot be attained by constituent units alone 42 , 43 . With its robust synthesis in solution and templated growth on various surfaces, the approach can be readily integrated with other platform technologies.…”

Section: Discussionmentioning

confidence: 99%

Surfactant-guided spatial assembly of nano-architectures for molecular profiling of extracellular vesicles

et al. 2021

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The controlled assembly of nanomaterials into desired architectures presents many opportunities; however, current preparations lack spatial precision and versatility in developing complex nano-architectures. Inspired by the amphiphilic nature of surfactants, we develop a facile approach to guide nanomaterial integration – spatial organization and distribution – in metal-organic frameworks (MOFs). Named surfactant tunable spatial architecture (STAR), the technology leverages the varied interactions of surfactants with nanoparticles and MOF constituents, respectively, to direct nanoparticle arrangement while molding the growing framework. By surfactant matching, the approach achieves not only tunable and precise integration of diverse nanomaterials in different MOF structures, but also fast and aqueous synthesis, in solution and on solid substrates. Employing the approach, we develop a dual-probe STAR that comprises peripheral working probes and central reference probes to achieve differential responsiveness to biomarkers. When applied for the direct profiling of clinical ascites, STAR reveals glycosylation signatures of extracellular vesicles and differentiates cancer patient prognosis.

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Section: Discussionmentioning

confidence: 99%

Surfactant-guided spatial assembly of nano-architectures for molecular profiling of extracellular vesicles

et al. 2021

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“…Given the simplicity of this framework, the graph-based approach can be applied to the other types of the tessellations of mechanical metamaterials (e.g., metal-organic hinged cube tessellation [22], voxelated mechanical metamaterials [8,23], and other origami lattices in 2D or 3D settings [13,[24][25][26]) by building graph representations for each architecture of mechanical metamaterials and by understanding the connections within the tessellations. Also, the ability to simulate the various shapes and morphologies suggests the possibility of answering the following question; given the target geometry and properties we want to achieve, can we dial-in the local phases in unit cells and find the optimal metamaterial configurations globally?…”

Section: Discussionmentioning

confidence: 99%

“…For example, in Fig. 4(b) where we consider a 2 by 2 tessellation, we can see that 7, 11, 12, 14, 15, 16, 22, 23} and E = {(1, 16), (2,11), (7,22), (12,15), (14,23)}.…”

Section: Graph Representation Of Tmp Tessellationmentioning

confidence: 99%

Graph-theoretic estimation of reconfigurability in origami-based metamaterials

Yamaguchi¹,

Yasuda²,

Tsujikawa³

et al. 2021

Preprint

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Origami-based mechanical metamaterials have recently received significant scientific interest due to their versatile and reconfigurable architectures. However, it is often challenging to account for all possible geometrical configurations of the origami assembly when each origami cell can take multiple phases. Here, we investigate the reconfigurability of a tessellation of origami-based cellular structures composed of bellows-like unit cells, specifically Tachi-Miura Polyhedron (TMP). One of the unique features of the TMP is that a single cell can take four different phases in a rigid foldable manner. Therefore, the TMP tessellation can achieve various shapes out of one originally given assembly. To assess the geometrical validity of the astronomical number of origami phase combinations, we build a graph-theoretical framework to describe the connectivity of unit cells and to analyze the reconfigurability of the tessellations. Our approach can pave the way to develop a systematic computational tool to design origami-based mechanical metamaterials with tailored properties.

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“…14 Benefitting from the considerable flexibility, MOFs are expected to exhibit some counterintuitive phenomena including negative linear compressibility (NLC), 15−17 NTE, [11][12][13]18 negative Poisson's ratio (NPR), etc. 19,20 The key advantage of MOFs over traditional inorganic materials is their structural designability. 21,22 So, it is expected that more approaches can be used to tailor materials' thermal expansion behavior.…”

Section: ■ Introductionmentioning

confidence: 99%

Molecular Packing-Dependent Thermal Expansion Behaviors in Metal Squarate Frameworks

Liu

Deng

et al. 2020

Chem. Mater.

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Packing mode of the molecules in materials has a great influence on materials’ physical and chemical properties. Herein, we investigated three metal squarate frameworks (Zn_sq_C, Cd_sq_C, and Cd_sq_R) with similar crystal structures. While owing to the difference in the packing mode of the squarate ligand, two kinds of structures can be achieved (cubic phase and trigonal phase). Synchrotron powder X-ray diffraction analyses show that the three compounds exhibit dramatically different thermal expansion behaviors, including positive thermal expansion (PTE), zero thermal expansion (ZTE), and negative thermal expansion (NTE). By directly structural comparison, it is found that, owing to the unique “eclipsed packing mode”, the trigonal phase (Cd_sq_R) can undergo a “wine-rack” distortion upon heating, which makes a great contribution to the NTE behavior, while this “wine-rack” distortion is forbidden in the “staggered packing” cubic phase. Furthermore, single-crystal X-ray diffraction and synchrotron X-ray total scattering analyses shed light on that the difference in magnitude of rotation of the squarate ligand may be responsible for the different thermal expansion behaviors. The present study shows how the proper alignment of the building blocks can be used to tailor materials’ thermal expansion behavior and can provide guidance for the rational design of novel NTE or ZTE materials.

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Metal-organic framework based on hinged cube tessellation as transformable mechanical metamaterial

Cited by 36 publications

References 73 publications

Surfactant-guided spatial assembly of nano-architectures for molecular profiling of extracellular vesicles

Surfactant-guided spatial assembly of nano-architectures for molecular profiling of extracellular vesicles

Graph-theoretic estimation of reconfigurability in origami-based metamaterials

Molecular Packing-Dependent Thermal Expansion Behaviors in Metal Squarate Frameworks

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