Table 1

Redox properties of the test compounds measured by cyclic voltametry in 0.1 M phosphate buffer, pH 7.0, 25°C. LUMO energies are reported for comparison.

CompoundE1/2(V)1-aLUMO (eV)1-b
BBR 3576−0.83  ± 0.03−1.13
BBR 3438−0.85  ± 0.03
LX−1.12  ± 0.03−1.09
MX−0.76  ± 0.03−1.29

  • ↵1-a  Half-wave reduction potential.

  • ↵1-b  Energy of the lowest unoccupied molecular orbital.