IBS Publications Repository: Hydrolytic Transformation of Microporous Metal-Organic Frameworks to Hierarchical Micro- and Mesoporous MOFs

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Hydrolytic Transformation of Microporous Metal-Organic Frameworks to Hierarchical Micro- and Mesoporous MOFs

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Title: Hydrolytic Transformation of Microporous Metal-Organic Frameworks to Hierarchical Micro- and Mesoporous MOFs

Author(s): Yonghwi Kim; Tao Yang; Gyeongwon Yun; Mohammad Bagher Ghasemian; Jaehyoung Koo; Eunsung Lee; Cho, S.J.; Kimoon Kim

Subject: hierarchical porosity, ; mesoporous materials, ; metal-organic frameworks, ; post-synthetic transformation, ; protein immobilization

Journal: ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, v.54, no.45, pp.13273 - 13278

Abstract: A new approach to the synthesis of hierarchical micro- and mesoporous MOFs from microporous MOFs involves a simple hydrolytic post-synthetic procedure. As a proof of concept, a new microporous MOF, POST-66(Y), was synthesized and its transformation into a hierarchical micro- and mesoporous MOF by water treatment was studied. This method produced mesopores in the range of 3 to 20nm in the MOF while maintaining the original microporous structure, at least in part. The degree of micro- and mesoporosity can be controlled by adjusting the time and temperature of hydrolysis. The resulting hierarchical porous MOF, POST-66(Y)-wt, can be utilized to encapsulate nanometer-sized guests such as proteins, and the enhanced stability and recyclability of an encapsulated enzyme is demonstrated. © 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim