Improving the Stability and Visualizing the Structural Transformation of the Stimuli-Responsive Metal-Organic Frameworks (MOFs)
- 6 April 2020
- journal article
- research article
- Published by American Chemical Society (ACS) in Inorganic Chemistry
- Vol. 59 (7), 5093-5098
- https://doi.org/10.1021/acs.inorgchem.0c00349
Abstract
New metal-organic frameworks (MOFs) based on flexible tetra-carboxylate ligands and Cu(II) are designed to gain stimuli-responsive materials. Unstable MOFs can be more stable with unabated flexibility by replacing coordinated solvent molecules with auxiliary N-based ligands. Two of them are intensively studied by in situ single-crystal X-ray diffraction (SCXRD) analysis and the unit cell parameters during transformations have been observed in detail. They undergo exceptional structural transformations which can be divided into two processes: the thermal-responsive phase transition and the solvent-responsive phase transition. The thermal-responsive phase transition takes place in a narrow temperature interval reversibly. However, the solvent-responsive phase transition is a gradual and irreversible process. The stimuli-responsive mechanism has also been explored by comparing the parameters of the crystal structures under different temperatures. Fascinatingly, their exceptional structural transformations correlate with the flexibility of the ligand fragments and the Cu-2(RCOO)(4)] clusters.Funding Information
- National Natural Science Foundation of China (21771101)
This publication has 37 references indexed in Scilit:
- Solvent-Assisted, Thermally Triggered Structural Transformation in Flexible Mesoporous Metal–Organic FrameworksChemistry of Materials, 2019
- Metal-organic frameworks (MOFs) for the removal of emerging contaminants from aquatic environmentsCoordination Chemistry Reviews, 2019
- Application of zirconium MOFs in drug delivery and biomedicineCoordination Chemistry Reviews, 2019
- From fundamentals to applications: a toolbox for robust and multifunctional MOF materialsChemical Society Reviews, 2018
- Visualizing the Dynamics of Temperature‐ and Solvent‐Responsive Soft CrystalsAngewandte Chemie-International Edition, 2016
- Locating Gases in Porous Materials: Cryogenic Loading of Fuel‐Related Gases Into a Sc‐based Metal–Organic Framework under Extreme PressuresAngewandte Chemie-International Edition, 2015
- Multi‐Stimuli‐Responsive Polymeric MaterialsChemistry – A European Journal, 2015
- Giant Negative Area Compressibility Tunable in a Soft Porous Framework MaterialJournal of the American Chemical Society, 2015
- Temperature- and light-responsive smart polymer materialsChemical Society Reviews, 2012
- An Adaptable Peptide-Based Porous MaterialScience, 2010