Ikeshita Masahiro, Ichinose Miku, Suzuki Daiya, Ono Jungo, Imai Yoshitane, Tsuno Takashi
Department of Applied Molecular Chemistry, College of Industrial Technology, Nihon University, Narashino, Japan.
Graduate School of Science and Engineering, Kindai University, Higashiosaka, Japan.
Chirality. 2025 Jan;37(1):e70014. doi: 10.1002/chir.70014.
The synthesis, structure, and circularly polarized luminescence (CPL) properties of axially chiral boron difluoride complexes are described. A series of optically pure bis (boron difluoride) complexes were prepared in 5 steps from commercially available (S)- or (R)-BINOL as starting materials. The complexes were found to exhibit similar yellow photoluminescence in solution, regardless of the type of substituents on the nitrogen atoms. Notably, for the complex with polyethylene glycol chains, homogeneous and transparent films were formed by the drop-cast method, showing intense CPL with a different sign from that of the solution state. Density functional theory (DFT) calculations were performed to understand their photophysical behavior including configuration-dependent CPL properties.
描述了轴向手性二氟化硼配合物的合成、结构和圆偏振发光（CPL）性质。以市售的（S）-或（R）-联萘酚为起始原料，分五步制备了一系列光学纯的双（二氟化硼）配合物。发现这些配合物在溶液中表现出相似的黄色光致发光，而与氮原子上取代基的类型无关。值得注意的是，对于带有聚乙二醇链的配合物，通过滴铸法形成了均匀透明的薄膜，显示出与溶液状态不同符号的强烈CPL。进行了密度泛函理论（DFT）计算，以了解它们的光物理行为，包括与构型相关的CPL性质。
