Journal
NATURE CHEMISTRY
Volume 11, Issue 2, Pages 109-116Publisher
NATURE PUBLISHING GROUP
DOI: 10.1038/s41557-018-0170-0
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Funding
- KAKENHI from the Japan Society of the Promotion of Science (JSPS) [JP25000007, JP18H05262]
- JSPS [JP16K17959, JP18H02072]
- Regional Innovation Strategy Support Program (Next-generation Energy System Creation Strategy for Kyoto) from the Ministry of Education, Culture, Sports, Science and Technology, Japan
- ACCEL programme of JST [JPMJAC1302]
- Grant for Basic Science Research Projects from The Sumitomo Foundation
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The ability of porous coordination polymers to undergo reversible structural transformations in response to the presence of guest molecules has been intensively investigated for applications such as molecular separation, storage, sensing and signalling processes. Here we report on the direct observation of the highly guest-responsive nature of the surface of a single-crystalline porous coordination polymer, which consists of paddlewheel zinc clusters and two types of ligand, by in situ liquid-phase atomic force microscopy. Observations were carried out in solution at constant temperature (28 degrees C) by high-speed atomic force microscopy with lattice resolution. A sharp and reversible response to the presence or absence of biphenyl guest molecules was observed, under conditions that can scarcely induce the transformation of the bulk crystal. Additionally, by modulating the surface coordination equilibrium, layer-by-layer delamination events were captured in real time at every similar to 13 s per frame.
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