Repository Collection: null https://scholar.dgist.ac.kr/handle/20.500.11750/64 Sat, 04 Apr 2026 20:34:25 GMT 2026-04-04T20:34:25Z Coordination Exchanges in Metal-Organic Frameworks https://scholar.dgist.ac.kr/handle/20.500.11750/58984 Title: Coordination Exchanges in Metal-Organic Frameworks Author(s): Jeong, Nak Cheon Tue, 22 Aug 2017 15:00:00 GMT https://scholar.dgist.ac.kr/handle/20.500.11750/58984 2017-08-22T15:00:00Z Solvent Coordination Strength: An Essential Factor for Metal Catalytic Reactions https://scholar.dgist.ac.kr/handle/20.500.11750/57743 Title: Solvent Coordination Strength: An Essential Factor for Metal Catalytic Reactions Author(s): Jeong, Nak Cheon Abstract: Open metal sites in metal-organic frameworks (MOFs), typically occupied by the coordination bonding of Lewis-base solvent molecules used in MOF synthesis, often play a crucial role in various catalytic reactions. In this talk, we introduce the ability of chloromethanes to form weak coordination bonding, which can provide the activation state to metal centers for catalytic reactions. More concretely, while the possible metal coordination of chloromethanes (dichloromethane and trichloromethane) has rarely been known, we show that the neutral chlorine atom in such chloromethanes can have a weak coordination bonding at metal centers, and this weak coordination can exchange relatively stronger coordination of Lewis-base molecules such as water, methanol, ethanol, and other catalytic substrates. Exploiting this weak coordination bonding, we demonstrate that the coordination exchangeability of the weak coordination bonding makes the metal center continuously activated, and thus, it substantially enhances the catalytic activity of the metal centers. Thu, 06 Apr 2023 15:00:00 GMT https://scholar.dgist.ac.kr/handle/20.500.11750/57743 2023-04-06T15:00:00Z A Facile Fabrication of HKUST-1 Film on Copper Substrate https://scholar.dgist.ac.kr/handle/20.500.11750/47318 Title: A Facile Fabrication of HKUST-1 Film on Copper Substrate Author(s): Ji, Hoon; Jeong, Nak Cheon Mon, 13 Jun 2016 15:00:00 GMT https://scholar.dgist.ac.kr/handle/20.500.11750/47318 2016-06-13T15:00:00Z Stepwise Chemical Activation of Open-Metal Sites in Copper-Based Metal-Organic Framework HKUST-1 https://scholar.dgist.ac.kr/handle/20.500.11750/47317 Title: Stepwise Chemical Activation of Open-Metal Sites in Copper-Based Metal-Organic Framework HKUST-1 Author(s): Bae, JinHee; Jeong, Nak Cheon Mon, 13 Jun 2016 15:00:00 GMT https://scholar.dgist.ac.kr/handle/20.500.11750/47317 2016-06-13T15:00:00Z