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Issue 6, 2014
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Guest-dependent mechanical anisotropy in pillared-layered soft porous crystals – a nanoindentation study

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Abstract

Soft porous crystals (SPCs) of the type [Zn2(L)2(dabco)]n (L = linear dicarboxylate linker, dabco = 1,4-diazabicyclo[2.2.2]octane) show exceptional mechanical anisotropy. Single-crystal nanoindentation experiments reveal very large changes of the elastic modulus and hardness triggered by exchange of the guests adsorbed in the porous metal–organic framework. The substantial variations of the mechanical properties as a function of the guest molecules can be explained by the responsive nature of these SPCs. Based on non-specific guest–framework interactions, crucial changes of the network geometry induce a complex and dynamical mechanical behaviour.

Graphical abstract: Guest-dependent mechanical anisotropy in pillared-layered soft porous crystals – a nanoindentation study

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Supplementary files

Article information


Submitted
14 Feb 2014
Accepted
24 Mar 2014
First published
25 Mar 2014

Chem. Sci., 2014,5, 2392-2397
Article type
Edge Article

Guest-dependent mechanical anisotropy in pillared-layered soft porous crystals – a nanoindentation study

S. Henke, W. Li and A. K. Cheetham, Chem. Sci., 2014, 5, 2392
DOI: 10.1039/C4SC00497C

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