PNBE-supported metallopolymer-type optical materials through grafting of Zn-Ln (Ln = Nd, Yb or Er) benzimidazole complex monomers with efficient NIR luminescence

For PNBE-supported transparent and semiconducting metallopolymer-type hybrid materials Poly(NBE-co-[Zn(L)2Ln(Py)(NO3)3)]) (Ln = Nd, Poly(NBE-co-2) or Yb, Poly(NBE-co-3)), significantly improved physical properties including efficient NIR luminescence (ΦNdL = 0.63% and ΦYbL = 1.43%) are obtained.157