Role of amine-cavity interactions in determining the structure and mechanical properties of the ferroelectric hybrid perovskite [NH3NH2]Zn(HCOO)3

Gregor Kieslich, Alexander C. Forse, Shijing Sun, Keith T. Butler, Shohei Kumagai, Yue Wu, Mark R. Warren, Aron Walsh, Clare P. Grey, Anthony K. Cheetham

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Abstract

Dense formate frameworks with a perovskite-like architecture exhibit multiferroic behavior and tunable mechanical properties. In such materials, interactions between the protonated amine and the metal-formate cavity have a large impact on the mechanical properties. We use complementary single-crystal X-ray diffraction and 1H solid state nuclear magnetic resonance spectroscopy to investigate amine-cavity interactions in [NH3NH2]Zn(HCOO)3. The results suggest that these interactions can be described as salt bridges similar to those in proteins and artificially synthesized helical polymers, where ionic interactions and hydrogen bonds are present at the same time. Nanoindentation and high-pressure single-crystal X-ray diffraction were used to study the mechanical properties of [NH3NH2]Zn(HCOO)3, yielding elastic moduli of E001 = 26.5 GPa and E110 = 24.6 GPa and a bulk modulus of K = 19 GPa. The mechanical properties suggest that, despite the relatively low packing density of [NH3NH2]Zn(HCOO)3, the amine-cavity interactions strengthen the framework significantly in comparison with related materials.

Original languageEnglish
Pages (from-to)312-317
Number of pages6
JournalChemistry of Materials
Volume28
Issue number1
Early online date25 Nov 2015
DOIs
Publication statusPublished - 12 Jan 2016

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formic acid
Perovskite
Ferroelectric materials
Amines
Mechanical properties
Elastic moduli
Single crystals
X ray diffraction
Nanoindentation
Nuclear magnetic resonance spectroscopy
Hydrogen bonds
Polymers
Salts
Metals
Proteins
perovskite

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Role of amine-cavity interactions in determining the structure and mechanical properties of the ferroelectric hybrid perovskite [NH3NH2]Zn(HCOO)3. / Kieslich, Gregor; Forse, Alexander C.; Sun, Shijing; Butler, Keith T.; Kumagai, Shohei; Wu, Yue; Warren, Mark R.; Walsh, Aron; Grey, Clare P.; Cheetham, Anthony K.

In: Chemistry of Materials, Vol. 28, No. 1, 12.01.2016, p. 312-317.

Research output: Contribution to journalArticle

Kieslich, G, Forse, AC, Sun, S, Butler, KT, Kumagai, S, Wu, Y, Warren, MR, Walsh, A, Grey, CP & Cheetham, AK 2016, 'Role of amine-cavity interactions in determining the structure and mechanical properties of the ferroelectric hybrid perovskite [NH3NH2]Zn(HCOO)3', Chemistry of Materials, vol. 28, no. 1, pp. 312-317. https://doi.org/10.1021/acs.chemmater.5b04143
Kieslich, Gregor ; Forse, Alexander C. ; Sun, Shijing ; Butler, Keith T. ; Kumagai, Shohei ; Wu, Yue ; Warren, Mark R. ; Walsh, Aron ; Grey, Clare P. ; Cheetham, Anthony K. / Role of amine-cavity interactions in determining the structure and mechanical properties of the ferroelectric hybrid perovskite [NH3NH2]Zn(HCOO)3. In: Chemistry of Materials. 2016 ; Vol. 28, No. 1. pp. 312-317.
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AU - Wu, Yue

AU - Warren, Mark R.

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