Abstract
The sterically crowded triarylphosphine bearing two phenothiazine moieties as redox sites was synthesized. The cyclic voltammogram of the phosphine exhibits three-step reversible oxidation, and the comparison with that of the triarylphosphine bearing one phenothiazine moiety suggests delocalization of positive charges during redox process.
Graphical Abstract
![](/cms/asset/9174c95e-d3fd-4e1d-8d5d-e3758b274050/gpss_a_1547728_uf0001_b.jpg)
Acknowledgment
The authors thank the Research and Analytical Center for Giant Molecules, Graduate School of Science, Tohoku University, for measuring a mass spectrum.