Figure 11.

The variable range hopping model predicts a shallow distance dependence for the rate of CT between G and GGG across an adenine tract of the opposing strand. Delocalized states, even in the absence of disorder (dashed lines), yield larger and shallower CT rates due to the smaller reorganization energy, and a shorter effective bridge length. In the presence of static disorder (solid lines), localized hopping is substantially attenuated due to the rugged energy landscape. Delocalized hopping, however, is relatively unaffected by static disorder, as the coupling is strong enough to allow tunneling through local barriers. Reprinted from Reference ²¹⁷ with permission. Copyright American Chemical Society.