n掺杂非交替分子碗/鞍杂化物。

IF 16.9
Shuhai Qiu, Kai Chen, Ziqi Deng, Xuan Jin, Zuoyu Li, Guogang Liu, Li Zhang, Wei Jiang, Teng-Teng Chen, Junzhi Liu, Zhaohui Wang
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引用次数: 0

摘要

在此,我们报告了通过连续钯催化环具有非交替拓扑结构的n掺杂分子碗/鞍杂化物的直接合成和性质。x射线晶体学分析证实,在核膨胀过程中,结构从扭曲的碗状结构演变为碗状/鞍状杂交结构。值得注意的是,通过1H NMR、手性HPLC分析和理论计算表明,这种碗状/鞍状杂交碳分子具有独特的分子动力学。这些分子表现出有趣的光物理性质,包括适度的荧光量子产率和窄带发射。稳态和瞬态光谱揭示了这些碗状分子和碗状/鞍状分子杂交种的不同光物理性质。此外,分子碗/鞍杂化表现出形状自适应特征,并允许与富勒烯以1:3的化学计量比多次结合,这在大多数非平面碳分子中很少观察到。该研究不仅提供了构建n掺杂非交替分子碗/鞍杂化家族的有效策略,而且为拓扑纳米碳的分子设计提供了新的见解,并具有在手性材料和有机电子学的潜在应用前景。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
N-Doped Nonalternant Molecular Bowl/Saddle Hybrids.

Herein, we report the straightforward synthesis and properties of N-doped molecular bowl/saddle hybrids with nonalternant topologies via successive palladium-catalyzed annulations. Structural evolutions from twisted, bowl-shaped to bowl/saddle-hybridized structures are involved during the core-expansion process, as confirmed by X-ray crystallographic analyses. Notably, this resultant bowl/saddle-hybridized molecular carbon shows unique molecular dynamics, as revealed by 1H NMR, chiral HPLC analyses and theoretical calculations. These molecules exhibit interesting photophysical properties, including moderate fluorescence quantum yields and narrowband emissions. Steady-state and transient spectroscopy reveal the different photophysical properties in these molecular bowl and bowl/saddle hybrids. Moreover, the molecular bowl/saddle hybrid exhibits the shape-adaptive character, and allow for multiple bindings with fullerene guests in a stoichiometry ratio of 1:3, which is seldomly observed in most nonplanar molecular carbons. This study not only presents an efficient strategy to construct a new family of N-doped nonalternant molecular bowl/saddle hybrids, but also provides insights into molecular design of topological nanocarbons with potential applications of chiral materials and organic electronics.

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