Fluorene-based ladder-type nanogrids have been synthesized via the stepwise and iterative Friedel-Crafts/Suzuki cross-coupling reactions, and efficient intramolecular gridization reaction could enhance yield up to ∼95%. Multiple configurational isomers were successfully separated with the yield of 10%, 20% and 65% for Grid-DFCz-1, Grid-DFCz-2 and Grid-DFCz-3 respectively. The molecular configurations of Grid-arene isomers were characterized and confirmed by the NMR spectra. We found that molecular configuration has little influence on photophysical and electrochemical properties.

中文翻译：

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通过分子内A ₁ -B ₁型Friedel-Crafts网格化有机合成二芳基芴梯形芳烃异构体

通过逐步和迭代的Friedel-Crafts / Suzuki交叉偶联反应合成了基于芴的梯型纳米网格，有效的分子内网格化反应可将收率提高至约95％。Grid-DFCz-1，Grid-DFCz-2和Grid-DFCz-3的多种构型异构体成功分离，产率分别为10％，20％和65％。并通过NMR光谱表征并证实了Grid-arene异构体的分子构型。我们发现分子构型对光物理和电化学性能影响很小。