キラルジピロメテン錯体を基盤とする近赤外円偏光発光発現が可能な分子システムの開発

抄録

Circularly polarized luminescence (CPL) is a phenomenon in which a chiral molecule emits light with a difference in intensity between right and left circularly polarized light. CPL allows the development of not only smarter photonic materials for advanced technologies, such as 3D displays but also provide bioimaging, hence CPL in the near-infrared (NIR) region is also an interesting research field. Highly efficient CPL requires strong luminescence properties and excellent anisotropy. However, CPL in the NIR region has been much less studied than in the visible light region, because luminescence in the NIR region is not strong due to thermal deactivation. The author and coworkers observed CPL in the visible light region by modifying the fluorescence properties of highly anisotropic helicenes. Furthermore, they synthesized dipyrromethene complexes that exhibit strong fluorescence in the NIR region. Based on these studies, they investigated molecular systems for CPL in the NIR region. The results are presented in this paper.