Iwai Tomohiro, Abe Shinsuke, Takizawa Shin-Ya, Masai Hiroshi, Terao Jun
Department of Basic Science, Graduate School of Arts and Sciences, The University of Tokyo 3-8-1, Komaba, Meguro-ku Tokyo 153-8902 Japan
PRESTO, Japan Science and Technology Agency 4-1-8 Honcho 332-0012 Kawaguchi Saitama Japan.
Chem Sci. 2024 May 7;15(23):8873-8879. doi: 10.1039/d4sc01046a. eCollection 2024 Jun 12.
2,2'-Bipyridine has been identified as a privileged ligand scaffold for photofunctional transition metal complexes. We herein report on the synthesis and photoproperties of an insulated π-conjugated 2,2'-bipyridine with a linked rotaxane structure consisting of permethylated α-cyclodextrin (PM α-CD) and oligo(-phenylene ethynylene). The insulated π-conjugated 2,2'-bipyridine exhibited enhanced ligand performance in the solid-state emitting biscyclometalated Ir complexes and visible-light-driven Ni catalysts owing to π-extension and remote steric effects based on the linked rotaxane structure.
2,2'-联吡啶已被确定为光功能过渡金属配合物的一种优势配体骨架。我们在此报告一种具有由全甲基化α-环糊精（PM α-CD）和聚（亚苯基乙炔）组成的连接轮烷结构的绝缘π共轭2,2'-联吡啶的合成及光性质。由于基于连接轮烷结构的π扩展和远程空间效应，该绝缘π共轭2,2'-联吡啶在固态发光双环金属化铱配合物和可见光驱动的镍催化剂中表现出增强的配体性能。
