A stereochemically stable double-helical trinuclear bis(tridipyrrin) complex exhibiting near-infrared chiroptical properties

Yingjian Shang Xuefeng Zhao Tao Wu Yanhui He Xing Guo Hongwei Si Lijuan Jiao Erhong Hao Wei Miao

引用本文: Yingjian Shang, Xuefeng Zhao, Tao Wu, Yanhui He, Xing Guo, Hongwei Si, Lijuan Jiao, Erhong Hao, Wei Miao. A stereochemically stable double-helical trinuclear bis(tridipyrrin) complex exhibiting near-infrared chiroptical properties[J]. Chinese Journal of Structural Chemistry, 2025, 44(12): 100722. doi: 10.1016/j.cjsc.2025.100722 shu
Citation:  Yingjian Shang,  Xuefeng Zhao,  Tao Wu,  Yanhui He,  Xing Guo,  Hongwei Si,  Lijuan Jiao,  Erhong Hao,  Wei Miao. A stereochemically stable double-helical trinuclear bis(tridipyrrin) complex exhibiting near-infrared chiroptical properties[J]. Chinese Journal of Structural Chemistry, 2025, 44(12): 100722. doi: 10.1016/j.cjsc.2025.100722 shu

A stereochemically stable double-helical trinuclear bis(tridipyrrin) complex exhibiting near-infrared chiroptical properties

摘要: A novel double-stranded trinuclear bis(tridipyrrin) zinc(II) complex, constructed from a linear π-conjugated tridipyrrin ligand, was synthesized and characterized. The complex featuring six directly linked dipyrrin units exhibits a stable double-helical structure with two non-superimposable P and M enantiomers, as confirmed by X-ray crystallography. Chirality was further demonstrated through HPLC separation and mirror-image circular dichroism (CD) spectra. The complex shows strong near-infrared (NIR) absorption and excellent solubility in various solvents, attributed to its sterically hindered structure. Spectroscopic, electrochemical, and theoretical studies revealed its unique electronic properties and redox behavior. This work advances the design of chiral NIR-active metallo-supramolecular systems and highlights potential applications in chiroptical materials.

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