Xiong Ren-Gen, Lu Si-Qi, Zhang Zhi-Xu, Cheng Hao, Li Peng-Fei, Liao Wei-Qiang
Jiangsu Key Laboratory for Science and Applications of Molecular Ferroelectrics, Southeast University, Nanjing, 211189, P. R. China.
Ordered Matter Science Research Center, Nanchang University, Nanchang, 330031, P. R. China.
Angew Chem Int Ed Engl. 2020 Jun 8;59(24):9574-9578. doi: 10.1002/anie.202000290. Epub 2020 May 11.
Switchable materials play an invaluable role in signal processing and encryption of smart devices. The development of multifunctional materials that exhibit switching characteristics in multiple physical channels has attracted widespread attention. Now, two chiral thermochromic ferroelastic crystals (S-CTA) CuCl and (R-CTA) CuCl (CTA=3-chloro-2-hydroxypropyltrimethylammonium) have been prepared with switchable properties in dielectricity, conductivity, second harmonic generation (SHG), piezoelectricity, ferroelasticity, chiral, and thermochromic properties. Compared with traditional phase-transition materials with switching features, thermochromism brings additional spectral encryption possibilities for future information processing. To the best of our knowledge, this is the first chiral thermochromic ferroelastic that exhibits switching properties in seven physical channels. This work is expected to promote further exploration of multifunctional molecular switchable materials.
可切换材料在智能设备的信号处理和加密方面发挥着不可估量的作用。开发在多个物理通道中表现出切换特性的多功能材料引起了广泛关注。目前，已经制备出两种具有介电、导电、二次谐波产生（SHG）、压电、铁弹性、手性和热致变色特性的可切换性质的手性热致变色铁弹性晶体（S-CTA）CuCl和（R-CTA）CuCl（CTA = 3-氯-2-羟丙基三甲基氯化铵）。与具有切换特性的传统相变材料相比，热致变色为未来的信息处理带来了额外的光谱加密可能性。据我们所知，这是第一种在七个物理通道中表现出切换特性的手性热致变色铁弹性材料。这项工作有望促进对多功能分子可切换材料的进一步探索。
