Volume 134, Issue 33 e202204334
Forschungsartikel

Sulfur-Doped Quintuple [9]Helicene with Azacorannulene as Core

Yin-Fu Wu

Yin-Fu Wu

State Key Laboratory for Physical Chemistry of Solid Surfaces, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Department of Chemistry, Xiamen University, Xiamen, 361005 China

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Si-Wei Ying

Si-Wei Ying

State Key Laboratory for Physical Chemistry of Solid Surfaces, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Department of Chemistry, Xiamen University, Xiamen, 361005 China

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Song-Di Liao

Song-Di Liao

State Key Laboratory for Physical Chemistry of Solid Surfaces, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Department of Chemistry, Xiamen University, Xiamen, 361005 China

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Ling Zhang

Ling Zhang

State Key Laboratory for Physical Chemistry of Solid Surfaces, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Department of Chemistry, Xiamen University, Xiamen, 361005 China

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Jun-Jie Du

Jun-Jie Du

State Key Laboratory for Physical Chemistry of Solid Surfaces, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Department of Chemistry, Xiamen University, Xiamen, 361005 China

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Bin-Wen Chen

Bin-Wen Chen

State Key Laboratory for Physical Chemistry of Solid Surfaces, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Department of Chemistry, Xiamen University, Xiamen, 361005 China

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Dr. Han-Rui Tian

Dr. Han-Rui Tian

State Key Laboratory for Physical Chemistry of Solid Surfaces, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Department of Chemistry, Xiamen University, Xiamen, 361005 China

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Fang-Fang Xie

Fang-Fang Xie

State Key Laboratory for Physical Chemistry of Solid Surfaces, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Department of Chemistry, Xiamen University, Xiamen, 361005 China

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Han Xu

Han Xu

State Key Laboratory for Physical Chemistry of Solid Surfaces, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Department of Chemistry, Xiamen University, Xiamen, 361005 China

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Prof. Dr. Shun-Liu Deng

Prof. Dr. Shun-Liu Deng

State Key Laboratory for Physical Chemistry of Solid Surfaces, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Department of Chemistry, Xiamen University, Xiamen, 361005 China

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Prof. Dr. Qianyan Zhang

Corresponding Author

Prof. Dr. Qianyan Zhang

State Key Laboratory for Physical Chemistry of Solid Surfaces, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Department of Chemistry, Xiamen University, Xiamen, 361005 China

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Prof. Dr. Su-Yuan Xie

Prof. Dr. Su-Yuan Xie

State Key Laboratory for Physical Chemistry of Solid Surfaces, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Department of Chemistry, Xiamen University, Xiamen, 361005 China

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Prof. Dr. Lan-Sun Zheng

Prof. Dr. Lan-Sun Zheng

State Key Laboratory for Physical Chemistry of Solid Surfaces, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Department of Chemistry, Xiamen University, Xiamen, 361005 China

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First published: 13 June 2022
Citations: 12

Abstract

Herein, a hetero(S,N)-quintuple [9]helicene (SNQ9H) molecule with an azacorannulene core was synthesized, currently representing the highest hetero-helicene reported in the field of multiple [n]helicenes. X-ray crystallography indicated that SNQ9H includes not only a propeller-shaped conformer SNQ9H-1, but also an unforeseen quasi-propeller-shaped conformer SNQ9H-2. Different conformers were observed for the first time in multiple [n≥9]helicenes, likely owing to the doping of heteroatomic sulfurs in the helical skeletons. Remarkably, the ratio of SNQ9H-1 to SNQ9H-2 can be regulated in situ by the reaction temperature. Experimental studies on the photophysical and redox properties of SNQ9H and theoretical calculations clearly demonstrated that the electronic structures of SNQ9H depend on their molecular conformations. The strategy of introducing heteroatomic sulfurs into the helical skeleton may be useful in constructing various conformers of higher multiple [n]helicenes in the future.

Conflict of interest

The authors declare no conflict of interest.

Data Availability Statement

The data that support the findings of this study are available in the Supporting Information of this article.

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