title: Hydrolytic Transformation of Microporous Metal-Organic Frameworks to Hierarchical Micro- and Mesoporous MOFs.
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 20 nm 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.
authors.affiliation: Center for Self-assembly and Complexity (CSC), Institute for Basic Science (IBS), Pohang, 790-784 (Republic of Korea) http://csc.ibs.re.kr/
authors.forename: Yonghwi
authors.initials: Y
authors.lastname: Kim
authors.affiliation: Center for Self-assembly and Complexity (CSC), Institute for Basic Science (IBS), Pohang, 790-784 (Republic of Korea) http://csc.ibs.re.kr/
authors.forename: Tao
authors.initials: T
authors.lastname: Yang
authors.affiliation: Center for Self-assembly and Complexity (CSC), Institute for Basic Science (IBS), Pohang, 790-784 (Republic of Korea) http://csc.ibs.re.kr/
authors.forename: Gyeongwon
authors.initials: G
authors.lastname: Yun
authors.affiliation: Center for Self-assembly and Complexity (CSC), Institute for Basic Science (IBS), Pohang, 790-784 (Republic of Korea) http://csc.ibs.re.kr/
authors.forename: Mohammad Bagher
authors.initials: MB
authors.lastname: Ghasemian
authors.affiliation: Center for Self-assembly and Complexity (CSC), Institute for Basic Science (IBS), Pohang, 790-784 (Republic of Korea) http://csc.ibs.re.kr/|Department of Chemistry, Pohang University of Science and Technology, Pohang, 790-784 (Republic of Korea).
authors.forename: Jaehyoung
authors.initials: J
authors.lastname: Koo
authors.affiliation: Center for Self-assembly and Complexity (CSC), Institute for Basic Science (IBS), Pohang, 790-784 (Republic of Korea) http://csc.ibs.re.kr/|Department of Chemistry, Pohang University of Science and Technology, Pohang, 790-784 (Republic of Korea).
authors.forename: Eunsung
authors.initials: E
authors.lastname: Lee
authors.affiliation: Department of Chemical Engineering, Chonnam National University, Gwangju, 500-757 (Republic of Korea).
authors.forename: Sung June
authors.initials: SJ
authors.lastname: Cho
authors.affiliation: Center for Self-assembly and Complexity (CSC), Institute for Basic Science (IBS), Pohang, 790-784 (Republic of Korea) http://csc.ibs.re.kr/. kkim@postech.ac.kr.|Department of Chemistry, Pohang University of Science and Technology, Pohang, 790-784 (Republic of Korea). kkim@postech.ac.kr.|Division of Advanced Materials Science, Pohang University of Science and Technology, Pohang, 790-784 (Republic of Korea). kkim@postech.ac.kr.
authors.forename: Kimoon
authors.initials: K
authors.lastname: Kim
keywords: hierarchical porosity; mesoporous materials; metal-organic frameworks; post-synthetic transformation; protein immobilization