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Development of Heterogeneous Enantioselective Catalysts using Chiral Metal-Organic Frameworks MOFs
Published on: January 17, 2020
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Postsynthetic Approach for the Rational Design of Chiral Ferroelectric Metal-Organic Frameworks
Marta Mon1, Jesús Ferrando-Soria1, Michel Verdaguer2
1Instituto de Ciencia Molecular (ICMol), Universidad de Valencia , 46980 Paterna, Valencia, Spain.
Journal of the American Chemical Society
|June 7, 2017
Summary
Researchers developed a new method to create ferroelectric (FE) chiral metal-organic frameworks (MOFs). By swapping calcium ions for methylammonium ions in a pre-formed MOF, they achieved ferroelectricity in the new material.
Area of Science:
- Materials Science
- Chemistry
- Crystallography
Background:
- Ferroelectric (FE) materials are crucial for diverse technological applications.
- Chiral metal-organic frameworks (MOFs) offer unique structural properties but have a limited number of known ferroelectric variants.
- Developing new methods to introduce ferroelectricity into MOFs is highly desirable.
Purpose of the Study:
- To propose and demonstrate a postsynthetic strategy for implementing ferroelectricity in chiral MOFs.
- To synthesize a novel ferroelectric chiral MOF through cation metathesis.
- To investigate the ferroelectric properties of the resulting material.
Main Methods:
- Single-crystal to single-crystal cation metathesis reaction.
- Synthesis of a chiral MOF precursor (Ca2+ form).
- Replacement of Ca2+ with methylammonium (CH3NH3+) ions.
- Characterization of the new material's structure and ferroelectric properties.
Main Results:
- A new chiral MOF, (CH3NH3)12{CuII24[(S,S)-hismox]12(OH2)3}·178H2O (2), was successfully synthesized.
- The new MOF retains the polar space group of the precursor.
- The material exhibits ferroelectricity below 260 K.
Conclusions:
- A facile postsynthetic method for introducing ferroelectricity into chiral MOFs has been established.
- This work expands the library of known ferroelectric MOFs.
- The findings pave the way for designing new functional chiral ferroelectric materials.
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