Yamada Shigeyuki, Miyano Kazuya, Konno Tsutomu, Agou Tomohiro, Kubota Toshio, Hosokai Takuya
Faculty of Molecular Chemistry and Engineering, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan.
Org Biomol Chem. 2017 Jul 19;15(28):5949-5958. doi: 10.1039/c7ob01369h.
We synthesised a series of dissymmetric bistolane derivatives and evaluated their liquid-crystalline (LC) and photoluminescence properties in detail. In measuring LC behaviours, rational structural design based on the dissymmetric molecular structure and electron-density distribution facilitated the production of the LC phase with a wide temperature range (up to 97 °C). In addition, dissymmetric bistolane derivatives were shown to strongly emit blue-photoluminescence in dilute solution and in crystalline states. It was found that dissymmetric bistolanes possess emissive features in even the LC phase and photoluminescence behaviours such as emission intensity and colour were sensitively switched depending on the molecular aggregate structure caused by applying a thermal stimulus.
我们合成了一系列不对称双环戊二烯衍生物，并详细评估了它们的液晶（LC）和光致发光特性。在测量液晶行为时，基于不对称分子结构和电子密度分布的合理结构设计有助于在宽温度范围（高达97°C）内产生液晶相。此外，不对称双环戊二烯衍生物在稀溶液和结晶态下均表现出强烈的蓝色光致发光。研究发现，即使在液晶相中，不对称双环戊二烯也具有发光特性，并且光致发光行为（如发射强度和颜色）会根据热刺激引起的分子聚集体结构而灵敏地切换。
