A double-helical S,C-bridged tetraphenyl- para -phenylenediamine and its persistent radical cation.

Kaho Harada,Chika Hasegawa,Taisuke Matsumoto, Hiroki Sugishita,Chitoshi Kitamura,Shuhei Higashibayashi,Masashi Hasegawa,Shuichi Suzuki,Shin-Ichiro Kato

Chemical communications (Cambridge, England)（2023）

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摘要

A structurally constrained, double-helical S,C-bridged tetraphenyl--phenylenediamine (TPPD) has been synthesized. The stable radical cation of the S,C-bridged TPPD was generated by chemical oxidation, and the electron spin was found to be delocalized over the entire π-conjugated framework. The excellent conformational stability of the neutral molecule facilitated the separation of its enantiomers.

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关键词

radical,cation,double-helical,c-bridged

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