Redox-switchable breathing behavior in tetrathiafulvalene-based metal–organic frameworks
Journal Article
·
· Nature Communications
- Nanjing Univ. (China)
- Texas A & M Univ., College Station, TX (United States)
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.
- Research Organization:
- Univ. of Texas, Austin, TX (United States). Energy Frontier Research Center (EFRC)
- Sponsoring Organization:
- USDOE SC Office of Basic Energy Sciences (SC-22)
- Grant/Contract Number:
- EE0007049; FE0026472; SC0001015
- OSTI ID:
- 1470031
- Journal Information:
- Nature Communications, Journal Name: Nature Communications Journal Issue: 1 Vol. 8; ISSN 2041-1723
- Publisher:
- Nature Publishing GroupCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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