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Thermal and structural properties, and molecular dynamics in organic-inorganic hybrid perovskite (C2H5NH3)(2)ZnCl4

机译:热和结构性质,有机无机杂交钙钛矿中的分子动力学(C2H5NH3)(2)ZnCl4

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The thermal and structural properties and molecular dynamics of layered perovskite-type (C2H5NH3)(2)ZnCl4 are investigated by differential scanning calorimetry, thermogravimetric analysis, and magic angle spinning nuclear magnetic resonance spectroscopy. The thermal properties and phase transitions are studied. Additionally, the Bloembergen-Purcell-Pound (BPP) curves for the H-1 spin-lattice relaxation time T-1 rho in the C2H5NH3 cation and for the C-13 T-1 rho in C2H5 are shown to have minima as a function of inverse temperature. This observation implies that these curves represent the rotational motions of H-1 and C-13 in the C2H5NH3 cation. The activation energies for H-1 and C-13 in the C2H5NH3 cation are obtained; the molecular motion of H-1 is enhanced at the C-end and N-end of the organic cation, and that at the carbons of the main chain is not as free as that for protons at the C-end and N-end.
机译:通过差示扫描量热法,热重分析和魔法角旋转核磁共振光谱研究了层状钙钛矿型(C2H5N3)(2)ZnCl4的热敏性和结构性能和分子动力学。 研究了热性能和相变。 另外,C2H5NH3阳离子中H-1旋转晶格弛豫时间T-1 Rho的Bloembergen-purecell-磅(BPP)曲线显示C-13 5中的C-13 T-1 rhO在C-13 5中被显示为函数最小 逆温。 该观察结果意味着这些曲线表示C2H5NH3阳离子中H-1和C-13的旋转运动。 获得C2H5N3阳离子中H-1和C-13的活化能量; H-1的分子运动在有机阳离子的C末端和N-末端增强,并且在主链的碳的碳中不像C末端和N末端那样自由。

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    《RSC Advances》 |2019年第65期|共6页
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  • 正文语种 eng
  • 中图分类 化学;
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