Fig. 4: Photophysical properties of PF[n]CPPs (n = 10, 12, 14).

a UV–Vis absorption spectra of dichloromethane solutions of PFCPPs at room temperature (solid lines), and photoluminescence spectra of PFCPPs in ethanol grass at 77 K upon excitation at 270 nm (dashed lines); blue: PF[10]CPP; red: PF[12]CPP; green: PF[14]CPP. b Cyclic voltammograms of PFCPPs in acetonitrile (supporting electrolyte: [n-Bu₄N][PF₆]; scan rate: 0.1 V s⁻¹). c Frontier molecular orbitals (isovalue: 0.02) and their energies (eV) of [10]CPP and PF[10]CPP calculated by B3LYP/6-31G(d) level of theory. Fc ferrocene.