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- Title
Redox-switchable breathing behavior in tetrathiafulvalene-based metal-organic frameworks.
- Authors
Jian Su; Shuai Yuan; Hai-Ying Wang; Lan Huang; Jing-Yuan Ge; Joseph, Elizabeth; Junsheng Qin; Cagin, Tahir; Jing-Lin Zuo; Hong-Cai Zhou
- Abstract
Metal-organic frameworks (MOFs) that respond to external stimuli such as guest molecules, temperature, or redox conditions are highly desirable. Herein, we coupled redox-switchable properties with breathing behavior induced by guest molecules in a single framework. Guided by topology, two flexible isomeric MOFs, compounds 1 and 2, with a formula of In(Me2NH2) (TTFTB), were constructed via a combination of [In(COO)4]- metal nodes and tetratopic tetrathiafulvalene-based linkers (TTFTB). The two compounds show different breathing behaviors upon the introduction of N2. Single-crystal X-ray diffraction, accompanied by molecular simulations, reveals that the breathing mechanism of 1 involves the bending of metal-ligand bonds and the sliding of interpenetrated frameworks, while 2 undergoes simple distortion of linkers. Reversible oxidation and reduction of TTF moieties changes the linker flexibility, which in turn switches the breathing behavior of 2. The redox-switchable breathing behavior can potentially be applied to the design of stimuli-responsive MOFs.
- Subjects
METAL-organic frameworks; TETRATHIAFULVALENE; LIGAND binding (Biochemistry); X-ray diffraction; MOLECULAR dynamics
- Publication
Nature Communications, 2017, Vol 8, Issue 1, p1
- ISSN
2041-1723
- Publication type
Article
- DOI
10.1038/s41467-017-02256-y