Pan Xiuhong, Zheng Anyi, Yu Xu, Di Qi, Li Liang, Duan Pengfei, Ye Kaiqi, Naumov Panče, Zhang Hongyu
State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, 130012, Changchun, China.
Center for Excellence in Nanoscience, Key Laboratory of Nanosystem and Hierarchical Fabrication, National Center for Nanoscience and Technology, Chinese Academy of Sciences, 100190, Beijing, China.
Angew Chem Int Ed Engl. 2022 Jun 20;61(25):e202203938. doi: 10.1002/anie.202203938. Epub 2022 May 3.
Flexible organic crystals with unique mechanical properties and excellent optical properties are of paramount significance for their wide applications in various research fields such as adaptive optics and soft robotics. However, low-temperature-resistant flexible organic crystal with circularly polarized luminescence (CPL) has never been reported. Herein, chiral organic crystals with CPL activity and low-temperature flexibility (77 K) are fabricated by the solvent diffusion method from chiral Schiff base, S(R)-4-bromo-2-(((1-phenylethyl)imino)methyl)phenol (S(R)-BPEMP). The corresponding chirooptical properties for the two enantiomeric crystals were thoroughly investigated, including the measurements of circular dichroism (CD) and CPL. To the best of our knowledge, this is the first report on low-molecular-weight flexible organic crystals with CPL activity, and we believe that the results will give a new impetus to the research of organic crystals.
具有独特机械性能和优异光学性能的柔性有机晶体在自适应光学和软机器人等各种研究领域的广泛应用中具有至关重要的意义。然而，具有圆偏振发光（CPL）的耐低温柔性有机晶体尚未见报道。在此，通过溶剂扩散法从手性席夫碱S（R）-4-溴-2-（（（1-苯乙基亚氨基）甲基）苯酚（S（R）-BPEMP）制备了具有CPL活性和低温柔性（77 K）的手性有机晶体。对两种对映体晶体的相应手性光学性质进行了深入研究，包括圆二色性（CD）和CPL的测量。据我们所知，这是关于具有CPL活性的低分子量柔性有机晶体的首次报道，我们相信这些结果将为有机晶体的研究提供新的推动力。
