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A multifunctional molecular ferroelectric with chiral features, a high Curie temperature, large spontaneous polarization and photoluminescence: (C9H14N)2CdBr4
Chemical Science ( IF 7.6 ) Pub Date : 2021-09-07 , DOI: 10.1039/d1sc03964d Yu-Kong Li 1 , Yuan-Yuan Lai 1 , Ting-Ting Ying 1 , Ding-Chong Han 1 , Yu-Hui Tan 1 , Yun-Zhi Tang 1 , Peng-Kang Du 1 , Hao Zhang 1
Chemical Science ( IF 7.6 ) Pub Date : 2021-09-07 , DOI: 10.1039/d1sc03964d Yu-Kong Li 1 , Yuan-Yuan Lai 1 , Ting-Ting Ying 1 , Ding-Chong Han 1 , Yu-Hui Tan 1 , Yun-Zhi Tang 1 , Peng-Kang Du 1 , Hao Zhang 1
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Low-dimensional chiral organic–inorganic hybrid metal halides have attracted a lot of attention in recent years due to their unique intrinsic properties, including having potential applications in optoelectronic and spintronic devices. However, low-dimensional chiral molecular ferroelectrics are very rare. In this paper, we report a novel zero-dimensional molecular ferroelectric (C9H14N)2CdBr4 (C9H14N+ = protonated 3-phenylpropylamine), which has obvious dielectric and thermal anomalies and shows a high Curie temperature at 395 K. It crystallizes in the P21 space group at room temperature, showing a strong CD signal, large spontaneous polarization (Ps = 13.5 μC cm−2), and a clear ferroelectric domain. In addition, it also exhibits a flexible SHG response. The photoluminescence spectrum shows that 1 has broadband luminescence. At the same time, compound 1 has a wide band gap, which is mainly contributed to by the inorganic CdBr4 tetrahedron. The high tunability of low-dimensional chiral molecular ferroelectrics also opens up a way to explore multifunctional chiral materials.
中文翻译：
具有手性特征、高居里温度、大自发极化和光致发光的多功能分子铁电体：(C9H14N)2CdBr4
近年来，低维手性有机-无机杂化金属卤化物由于其独特的内在性质而引起了广泛的关注，包括在光电和自旋电子器件中具有潜在的应用。然而，低维手性分子铁电体非常罕见。在本文中，我们报道了一种新型零维分子铁电体(C 9 H 14 N) 2 CdBr 4 (C 9 H 14 N + =质子化的3-苯基丙胺)，它具有明显的介电和热异常，并表现出高居里温度温度为395 K。室温下在P 2 1空间群中结晶，表现出强烈的CD信号、大的自发极化（P s = 13.5 μC cm -2）和清晰的铁电畴。此外，它还表现出灵活的倍频响应。光致发光光谱表明1具有宽带发光。同时，化合物1具有宽带隙，这主要是由无机CdBr 4四面体贡献的。低维手性分子铁电体的高度可调性也为探索多功能手性材料开辟了一条途径。
更新日期：2021-09-14
中文翻译：
具有手性特征、高居里温度、大自发极化和光致发光的多功能分子铁电体：(C9H14N)2CdBr4
近年来，低维手性有机-无机杂化金属卤化物由于其独特的内在性质而引起了广泛的关注，包括在光电和自旋电子器件中具有潜在的应用。然而，低维手性分子铁电体非常罕见。在本文中，我们报道了一种新型零维分子铁电体(C 9 H 14 N) 2 CdBr 4 (C 9 H 14 N + =质子化的3-苯基丙胺)，它具有明显的介电和热异常，并表现出高居里温度温度为395 K。室温下在P 2 1空间群中结晶，表现出强烈的CD信号、大的自发极化（P s = 13.5 μC cm -2）和清晰的铁电畴。此外，它还表现出灵活的倍频响应。光致发光光谱表明1具有宽带发光。同时，化合物1具有宽带隙，这主要是由无机CdBr 4四面体贡献的。低维手性分子铁电体的高度可调性也为探索多功能手性材料开辟了一条途径。
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