Kang Zhengxin, Lv Fan, Wu Qinghua, Li Heng, Li Zhongxin, Wu Feng-Xi, Wang Zhaoyun, Jiao Lijuan, Hao Erhong
Anhui Laboratory of Molecule-Based Materials, The Key Laboratory of Functional Molecular Solids, Ministry of Education, School of Chemistry and Materials Science, Anhui Normal University, Wuhu 241002, China.
School of Pharmacy, Anhui University of Chinese Medicine, Hefei 230012, China.
Org Lett. 2021 Oct 15;23(20):7986-7991. doi: 10.1021/acs.orglett.1c02996. Epub 2021 Oct 4.
A family of directly β,γ-linked BODIPY oligomers up to pentamers were regioselectively prepared via Pd(II)-catalyzed oxidative C-H cross-coupling. The structural integrity of β,γ-linked dimers was unambiguously confirmed by X-ray crystallography. These structurally unprecedented oligomers showed red-shifted absorptions and near-infrared emissions along with efficient intersystem crossing, giving Φ in the range of 12-43%, for potential use as heavy-atom-free photosensitizers.
通过钯（II）催化的氧化C-H交叉偶联，区域选择性地制备了一系列直至五聚体的直接β，γ连接的BODIPY低聚物。通过X射线晶体学明确证实了β，γ连接二聚体的结构完整性。这些结构前所未有的低聚物表现出红移吸收和近红外发射，以及有效的系间窜越，磷光量子产率在12%-43%范围内，有望用作无重原子的光敏剂。
