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- Title
Thermal and Gas Dual-Responsive Behaviors of an Expanded UiO-66-Type Porous Coordination Polymer.
- Authors
Zhou, Hao‐Long; Bai, Jie; Ye, Jia‐Wen; Mo, Zong‐Wen; Zhang, Wei‐Xiong; Zhang, Jie‐Peng; Chen, Xiao‐Ming
- Abstract
Through a modified solvothermal reaction using benzoic acid as an additive, the fcu-type framework [Zr6O4(OH)4(edba)6] (H2edba=4,4′-(ethyne-1,2-diyl)dibenzoic acid), an expanded version of UiO-66, is synthesized as high-quality single crystals, which can retain their single-crystallinity after solvent exchange and degas treatments. In situ variable-temperature single-crystal X-ray diffraction measurements show that the guest-free framework exhibits a remarkably large isotropic negative thermal expansion ( α=−11.0×10−6 K−1) as a result of the transverse vibrational bending of the long organic ligand. By virtue of the relatively large π-conjugation system of the organic ligand, [Zr6O4(OH)4(edba)6] also exhibits bright blue luminescence, which can be quenched efficiently by gaseous O2 ( Ksv=2.4 bar−1).
- Subjects
BENZOIC acid; SINGLE crystals; X-ray diffraction; LIGAND binding (Biochemistry); LUMINESCENCE
- Publication
ChemPlusChem, 2016, Vol 81, Issue 8, p817
- ISSN
2192-6506
- Publication type
Article
- DOI
10.1002/cplu.201600145