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Updated: Jul 3, 2026

Probing the Structure and Dynamics of Interfacial Water with Scanning Tunneling Microscopy and Spectroscopy
Published on: May 27, 2018
Characterization of interfacial water in MOF-5 (Zn4(O)(BDC)3)--a combined spectroscopic and theoretical study
K Schröck1, F Schröder, M Heyden
1Institute of Physical Chemistry II, Ruhr-University Bochum, Universitätsstrasse 150, Bochum, Germany.
Abstract:
In this article we report the detection and characterization of adsorbed interfacial water within the cages of the metal-organic framework MOF-5 (Zn(4)O(BDC)(3)) by terahertz time-domain spectroscopy (THz TDS) in the frequency range from 5 to 46 cm(-1). The experimental spectra suggest a coupling of the intermolecular motions of the water molecules adsorbed to the collective vibrations of the network at 4 wt% hydration. This finding is supported by the results of MD simulations. When increasing the water content to 8 wt% we observed a non reversible decomposition of MOF-5.
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