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Moon, Hoi Ri
Functional Inorganic Nanomaterials for Energy Lab (FINE)
Research Interests
  • Inorganic-organic hybrid materials, carbon capture materials, hydrogen storage materials, heterogeneous catalyst

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Solid-state phase transformations toward a metal-organic framework of 7-connected Zn4O secondary building units

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dc.contributor.author Kim, Jaehui ko
dc.contributor.author Ha, Junsu ko
dc.contributor.author Lee, Jae Hwa ko
dc.contributor.author Moon, Hoi Ri ko
dc.date.available 2020-07-10T00:25:28Z -
dc.date.created 2020-07-06 ko
dc.date.issued 2020-06 ko
dc.identifier.citation NANO RESEARCH ko
dc.identifier.issn 1998-0124 ko
dc.identifier.uri https://scholarworks.unist.ac.kr/handle/201301/32991 -
dc.description.abstract In the development of metal-organic frameworks (MOFs), secondary building units (SBUs) have been utilized as molecular modules for the construction of nanoporous materials with robust structures. Under solvothermal synthetic conditions, dynamic changes in the metal coordination environments and ligand coordination modes of SBUs determine the resultant product structures. Alternatively, MOF phases with new topologies can also be achieved by post-synthetic treatment of as-synthesized MOFs via the introduction of acidic or basic moieties that cause the simultaneous cleavage/reformation of coordination bonds in the solid state. In this sense, we studied the solid-state transformation of two ndc-based Zn-MOFs (ndc = 1,4-naphthalene dicarboxylate) with different SBUs but the same pcu topology to another MOF with sev topology. One of the chosen MOFs with pcu nets is [Zn-2(ndc)(2)(bpy)](n)(bpy = 4,4 '-bipyridine), (6C(bpy)-MOF) consisting of a 6-connected pillared-paddlewheel SBU, and the other is IRMOF-7 composed of 6-connected Zn4O(COO)(6)SBUs and ndc. Upon post-structural modification, these pcu MOFs were converted into the same MOF with sev topology constructed from the uncommon 7-connected Zn4O(COO)(7)SBU (7C-MOF). The appropriate post-synthetic conditions for the transformation of each SBUs were systematically examined. In addition, the effect of the pillar molecules in the pillared-paddlewheel MOFs on the topology conversion was studied in terms of the linker basicity, which determines the inertness during the solid-state phase transformation. This post-synthetic modification approach is expected to expand the available methods for designing and synthesizing MOFs with controlled topologies. ko
dc.language 영어 ko
dc.publisher TSINGHUA UNIV PRESS ko
dc.title Solid-state phase transformations toward a metal-organic framework of 7-connected Zn4O secondary building units ko
dc.type ARTICLE ko
dc.identifier.scopusid 2-s2.0-85086170862 ko
dc.identifier.wosid 000539837100001 ko
dc.type.rims ART ko
dc.identifier.doi 10.1007/s12274-020-2873-y ko
dc.identifier.url https://link.springer.com/article/10.1007/s12274-020-2873-y ko
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