Poly(triphenylamine-phenothiazine) dye and application thereof

The invention discloses a poly(triphenylamine-phenothiazine) dye and an application thereof. The poly(triphenylamine-phenothiazine) dye is prepared by carrying out a Stille coupling or Suzuki coupling reaction on monomers with a triphenylamine structure and a phenothiazine structure, the prepared poly(triphenylamine-phenothiazine) dye contains a triphenylamine and phenothiazine compound donor unit structure. A dye-sensitized solar cell with high current density and high photoelectric conversion rate can be obtained when the poly(triphenylamine-phenothiazine) dye is applied to preparation of the dye-sensitive solar cell.