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Time-Resolved In Situ X-ray Diffraction Reveals Metal-Dependent Metal-Organic Framework Formation

DOI: 10.1002/anie.201608463 DOI Help

Authors: Yue Wu (University of Oxford) , Sebastian Henke (Lehrstuhl für Anorganische Chemie II, Ruhr-Universität Bochum) , Gregor Kieslich (Department of Materials Science and Metallurgy, University of Cambridge) , Inke Schwedler (Lehrstuhl für Anorganische Chemie II, Ruhr-Universität Bochum) , Miaosen Yang (University of Oxford; School of Chemical Engineering, North-east Dianli University) , Duncan A. X. Fraser (Department of Chemistry, University of Oxford) , Dermot O'hare (Department of Chemistry, University of Oxford)
Co-authored by industrial partner: No

Type: Journal Paper
Journal: Angewandte Chemie , VOL 128 , PAGES 14287 - 14290

State: Published (Approved)
Published: November 2016
Diamond Proposal Number(s): 11884

Abstract: Versatility in metal substitution is one of the key aspects of metal-organic framework (MOF) chemistry, allowing properties to be tuned in a rational way. As a result, it important to understand why MOF syntheses involving different metals arrive at or fail to produce the same topological outcome. Frequently, conditions are tuned by trial-and-error to make MOFs with different metal species. We ask: is it possible to adjust synthetic conditions in a systematic way in order to design routes to desired phases? We have used in situ X-ray powder diffraction to study the solvothermal formation of isostructural M2(bdc)2dabco (M=Zn, Co, Ni) pillared-paddlewheel MOFs in real time. The metal ion strongly influences both kinetics and intermediates observed, leading in some cases to multiphase reaction profiles of unprecedented complexity. The standard models used for MOF crystallization break down in these cases; we show that a simple kinetic model describes the data and provides important chemical insights on phase selection.

Subject Areas: Chemistry, Materials

Instruments: I12-JEEP: Joint Engineering, Environmental and Processing

Added On: 10/11/2016 16:00

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