Eletron‐Spin Dynamics in the Two‐Dimensional Compound [NH3(CH2)4NH3]MnCl4

Niang, A.; Pescia, J.; Khechoubi, E. M.; Chanh, N. B.; Duplessix, R.

doi:10.1002/pssb.2221780225

Cited by 6 publications

(3 citation statements)

References 17 publications

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“…The perovskite [NH 3 (CH 2 ) n NH 3 ]CdCl 4 (M = Cd, X = Cl) consists of puckered layers of CdCl 6 separated by nearly perpendicular layers of [NH 3 (CH 2 ) n NH 3 ] chains. The distance between the two neighboring inorganic layers depends on the length of the organic chain . These compounds have attracted considerable interest owing to the multiplicity of their crystal structures, which governs their thermodynamic properties and structural dynamics.…”

Section: Introductionmentioning

confidence: 99%

Physicochemical Property Investigations of Perovskite-Type Layer Crystals [NH₃(CH₂)_nNH₃]CdCl₄ (n = 2, 3, and 4) as a Function of Length n of CH₂

Lim

Kim

2021

ACS Omega

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Hybrid perovskites have potential applications in several electrochemical devices such as supercapacitors, batteries, and fuel cells. Here, the thermal stabilities as a function of the length n of the CH2 groups in [NH3(CH2) n NH3]CdCl4 (n = 2, 3, and 4) crystals were considered by TGA and DTA. The structural characteristics and molecular dynamics were studied by MAS and static NMR experiments. A comparison of spin–lattice relaxation times indicated that the organic cation containing 1H and 13C was significantly more flexible than the inorganic anion containing 113Cd. The flexibility of 1H increased with an increase in the length of CH2 in the carbon chain, resulting in a decrease in the activation energy (E a) of 1H. The E a of 13C at n = 3 and 4 was more flexible at high temperatures than at low temperatures. In contrast, the E a of 13C at n = 2 was more flexible at low temperatures. These results provide insight into the thermal stability and molecular dynamics of these crystals as a function of the length n of CH2 groups in the carbon chain and are expected to facilitate applications.

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Section: Introductionmentioning

confidence: 99%

Physicochemical Property Investigations of Perovskite-Type Layer Crystals [NH₃(CH₂)_nNH₃]CdCl₄ (n = 2, 3, and 4) as a Function of Length n of CH₂

Lim

Kim

2021

ACS Omega

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“…Perovskite [NH 3 (CH 2 ) n NH 3 ]MnCl 4 consists of puckered layers of MnCl 4 separated by layers of NH 3 (CH 2 ) n NH 3 chains that are nearly perpendicular to the layers. The distance between the two neighboring inorganic layers strongly depends on the length of the organic chain . In addition, the ferroelasticity is commonly observed in materials with a perovskite crystal structure.…”

Section: Introductionmentioning

confidence: 99%

Effect of Methylene Chain Length on the Thermodynamic Properties, Ferroelastic Properties, and Molecular Dynamics of the Perovskite-type Layer Crystal [NH₃(CH₂)_nNH₃]MnCl₄ (n = 2, 3, and 4)

2021

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The structures and phase transitions of [NH 3 (CH 2 ) n NH 3 ]MnCl 4 ( n = 2, 3, and 4) crystals were confirmed through X-ray diffraction and differential scanning calorimetry (DSC) experiments. Thermodynamic properties, ferroelastic properties, and molecular dynamics of three crystals were studied as a function of the number ( n ) of CH 2 groups in the alkylene chains. The loss in molecular weight due to a decrease in n marked the onset of the partial thermal decomposition. The thermal decomposition temperature, T d , increased with increasing length of the CH 2 chain. While the ferroelastic twin domain walls for n = 2 and 4 were in the same direction at all temperatures, the domain walls for n = 3 were rotated by 45°, and the direction of extinction in phase II was rotated by 45° with respect to phases I and III. The 1 H and 13 C MAS NMR spectra of the three crystals were recorded as a function of temperature. With increasing length of the CH 2 chain, the 1 H spin relaxation time decreased, indicating that molecular motions were activated. These results provide insights into the thermodynamic properties and structural dynamics of the [NH 3 (CH 2 ) n NH 3 ]MnCl 4 crystals and are expected to facilitate their potential applications.

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“…The distance between the two neighboring inorganic layers depends on the length of the organic chain. 17 These compounds have attracted considerable interest owing to the multiplicity of their crystal structures, which govern their thermodynamic properties and structural…”

mentioning

confidence: 99%

Advances and Physicochemical Property Investigations by Methylene Chain Length of Perovskite-type Layer Crystals [NH3(CH2)nNH3]CdCl4 (n=2, 3, and 4)

Lim

2021

Preprint

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Hybrid perovskites have potential applications in several electrochemical devices such as supercapacitors, batteries, and fuel cells. However, despite various potential applications, there have been limited studies on compounds containing Cd. Therefore, in this study, the structures and phase transition temperatures TC of organic–inorganic perovskite [NH3(CH2)nNH3]CdCl4 (n=2, 3, and 4) were confirmed by X-ray diffraction and DSC experiments. The thermal stabilities obtained by TGA and DTA results were considered as a function of the length n of the CH2 groups in the cation. In addition, structural characteristics and molecular dynamics of the cation and anion near TC were studied by 1H MAS NMR, 13C MAS NMR, 14N static NMR, and 113Cd MAS NMR experiments. From these results, regardless of whether n is even or odd, the differences in thermal and physical properties were minimal. Rather, the difference in molecular motion relative to the length of the cation was seen only at higher temperatures. These results provide insights into the thermal stability and molecular dynamics of [NH3(CH2)nNH3]CdCl4 crystals and are expected to facilitate potential applications.

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Eletron‐Spin Dynamics in the Two‐Dimensional Compound [NH₃(CH₂)₄NH₃]MnCl₄

Cited by 6 publications

References 17 publications

Physicochemical Property Investigations of Perovskite-Type Layer Crystals [NH₃(CH₂)_nNH₃]CdCl₄ (n = 2, 3, and 4) as a Function of Length n of CH₂

Physicochemical Property Investigations of Perovskite-Type Layer Crystals [NH₃(CH₂)_nNH₃]CdCl₄ (n = 2, 3, and 4) as a Function of Length n of CH₂

Effect of Methylene Chain Length on the Thermodynamic Properties, Ferroelastic Properties, and Molecular Dynamics of the Perovskite-type Layer Crystal [NH₃(CH₂)_nNH₃]MnCl₄ (n = 2, 3, and 4)

Advances and Physicochemical Property Investigations by Methylene Chain Length of Perovskite-type Layer Crystals [NH3(CH2)nNH3]CdCl4 (n=2, 3, and 4)

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Eletron‐Spin Dynamics in the Two‐Dimensional Compound [NH3(CH2)4NH3]MnCl4

Cited by 6 publications

References 17 publications

Physicochemical Property Investigations of Perovskite-Type Layer Crystals [NH3(CH2)nNH3]CdCl4 (n = 2, 3, and 4) as a Function of Length n of CH2

Physicochemical Property Investigations of Perovskite-Type Layer Crystals [NH3(CH2)nNH3]CdCl4 (n = 2, 3, and 4) as a Function of Length n of CH2

Effect of Methylene Chain Length on the Thermodynamic Properties, Ferroelastic Properties, and Molecular Dynamics of the Perovskite-type Layer Crystal [NH3(CH2)nNH3]MnCl4 (n = 2, 3, and 4)

Advances and Physicochemical Property Investigations by Methylene Chain Length of Perovskite-type Layer Crystals [NH3(CH2)nNH3]CdCl4 (n=2, 3, and 4)

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Eletron‐Spin Dynamics in the Two‐Dimensional Compound [NH₃(CH₂)₄NH₃]MnCl₄

Physicochemical Property Investigations of Perovskite-Type Layer Crystals [NH₃(CH₂)_nNH₃]CdCl₄ (n = 2, 3, and 4) as a Function of Length n of CH₂

Physicochemical Property Investigations of Perovskite-Type Layer Crystals [NH₃(CH₂)_nNH₃]CdCl₄ (n = 2, 3, and 4) as a Function of Length n of CH₂

Effect of Methylene Chain Length on the Thermodynamic Properties, Ferroelastic Properties, and Molecular Dynamics of the Perovskite-type Layer Crystal [NH₃(CH₂)_nNH₃]MnCl₄ (n = 2, 3, and 4)