A multifunctional molecular ferroelectric with chiral features, a high Curie temperature, large spontaneous polarization and photoluminescence: (C9H14N)2CdBr4† † Electronic supplementary information (ESI) available: Additional data. CCDC 2097252 and 2097253. For ESI and crystallographic data in CIF or other electronic format see DOI: 10.1039/d1sc03964d
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ABSTRACT: 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. A novel molecular ferroelectric (C9H14N)2CdBr4 with high Curie temperature (Tc = 395 K), strong CD signal, large spontaneous polarization, clear ferroelectric domain and fluorescence characteristics.
SUBMITTER: Li Y
PROVIDER: S-EPMC8513930 | biostudies-literature |
REPOSITORIES: biostudies-literature
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