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

Kaho HaradaChika HasegawaTaisuke MatsumotoHiroki SugishitaChitoshi KitamuraShuhei Higashibayashi Masashi Hasegawa Shuichi Suzuki Shin-Ichiro Kato

Published in: Chemical communications (Cambridge, England) (2023)

A structurally constrained, double-helical S,C-bridged tetraphenyl- para -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.

Keyphrases

ionic liquid
single molecule
molecular dynamics
room temperature
photodynamic therapy
hydrogen peroxide
liquid chromatography
nitric oxide