Observation of early ZIF-8 crystallization stages with X-ray absorption spectroscopy

Ana Guilherme Buzanich; Anicó Kulow; Anke Kabelitz; Christian Grunewald; Robert Seidel; Ander Chapartegui-Arias; Martin Radtke; Uwe Reinholz; Franziska Emmerling; Sebastian Beyer

doi:10.1039/D0SM01356K

Observation of early ZIF-8 crystallization stages with X-ray absorption spectroscopy†

Ana Guilherme Buzanich,

^a Anicó Kulow,

^a Anke Kabelitz,^a Christian Grunewald,

^a Robert Seidel,

^bc Ander Chapartegui-Arias,^ad Martin Radtke,^a Uwe Reinholz,^a Franziska Emmerling

^ac and Sebastian Beyer

*^ef

Author affiliations

* Corresponding authors

^a Federal Institute for Materials Research and Testing (BAM), Richard-Willstätter-Str. 11, 12489 Berlin, Germany

^b Helmholtz-Zentrum Berlin für Materialien and Energie, Albert-Einstein-Strasse 15, 12489 Berlin, Germany

^c Department of Chemistry, Humboldt-Universität zu Berlin, Brook-Taylor-Str. 2, 12489 Berlin, Germany

^d School of Analytical Sciences Adlershof, Albert-Einstein-Straße 5, D-12489 Berlin, Germany

^e Institute for Tissue Engineering and Regenerative Medicine, Chinese University of Hong Kong, Hong Kong, SAR, China

^f Department of Biomedical Engineering, Chinese University of Hong Kong, Hong Kong, SAR, China
E-mail: sebatsian.beyer@cuhk.edu.hk

Abstract

The present study investigates early stages of ZIF-8 crystallization up to 5 minutes post mixing of precursor solutions. Dispersive X-ray Absorption Spectroscopy (DXAS) provides a refined understanding of the evolution of the coordination environment during ZIF-8 crystallization. Linear Combination Analysis (LCA) suggests tetrakis(1-methylimidazole)zinc²⁺ to be a suitable and stable mononuclear structure analogue for some early stage ZIF-8 intermediates. Our results pave the way for more detailed studies on physico-chemical aspects of ZIF-8 crystallization to better control tailoring ZIF-8 materials for specific applications.

Soft Matter

Observation of early ZIF-8 crystallization stages with X-ray absorption spectroscopy†

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Observation of early ZIF-8 crystallization stages with X-ray absorption spectroscopy

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