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有机-无机杂化钙钛矿（CHNH）ZnCl的热性能、结构性能及分子动力学

Thermal and structural properties, and molecular dynamics in organic-inorganic hybrid perovskite (CHNH)ZnCl.

作者信息

Lim Ae Ran

机构信息

Analytical Laboratory of Advanced Ferroelectric Crystals, Jeonju University Jeonju 55069 South Korea

Department of Science Education, Jeonju University Jeonju 55069 South Korea.

出版信息

RSC Adv. 2019 Nov 21;9(65):38032-38037. doi: 10.1039/c9ra07695f. eCollection 2019 Nov 19.

DOI:10.1039/c9ra07695f
PMID:35541808
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9075765/
Abstract

The thermal and structural properties and molecular dynamics of layered perovskite-type (CHNH)ZnCl 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 spin-lattice relaxation time in the CHNH cation and for the C in CH are shown to have minima as a function of inverse temperature. This observation implies that these curves represent the rotational motions of H and C in the CHNH cation. The activation energies for H and C in the CHNH cation are obtained; the molecular motion of H 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.

摘要

通过差示扫描量热法、热重分析和魔角旋转核磁共振光谱法研究了层状钙钛矿型(CHNH)ZnCl的热性能、结构性能和分子动力学。研究了其热性能和相变。此外，CHNH阳离子中H自旋晶格弛豫时间的布洛姆伯根-珀塞尔-庞德(BPP)曲线以及CH中C的BPP曲线显示出作为逆温度函数的最小值。这一观察结果表明，这些曲线代表了CHNH阳离子中H和C的旋转运动。获得了CHNH阳离子中H和C的活化能；有机阳离子C端和N端的H分子运动增强，主链碳上的分子运动不如C端和N端质子的分子运动自由。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7553/9075765/abe93162d841/c9ra07695f-f9.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7553/9075765/264900d4d97d/c9ra07695f-f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7553/9075765/b9efd36faf4b/c9ra07695f-f2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7553/9075765/dee4e8daf2af/c9ra07695f-f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7553/9075765/87bac87a2b0e/c9ra07695f-f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7553/9075765/e0874602d245/c9ra07695f-f5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7553/9075765/a244e33d548c/c9ra07695f-f6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7553/9075765/90c3bc6d5bd8/c9ra07695f-f7.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7553/9075765/c08b74bd85c8/c9ra07695f-f8.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7553/9075765/abe93162d841/c9ra07695f-f9.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7553/9075765/264900d4d97d/c9ra07695f-f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7553/9075765/b9efd36faf4b/c9ra07695f-f2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7553/9075765/dee4e8daf2af/c9ra07695f-f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7553/9075765/87bac87a2b0e/c9ra07695f-f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7553/9075765/e0874602d245/c9ra07695f-f5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7553/9075765/a244e33d548c/c9ra07695f-f6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7553/9075765/90c3bc6d5bd8/c9ra07695f-f7.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7553/9075765/c08b74bd85c8/c9ra07695f-f8.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7553/9075765/abe93162d841/c9ra07695f-f9.jpg

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