Our last example involves long-range intramolecu-lar CT in a sequence of α-N(CH 3 ) 2 -ω-NO 2 (phenylene) n push-pull chromophores, n = 1-8. The principal NTO pair for the largest of these molecules is depicted in Fig. and accounts for the entirety of the density change (λ 2 1 = 1.000), so that (∆r) NTO and d e-h are essentially identical. One can also watch d exc converge to d e-h as the polymer's length increases (Fig. ). This convergence is driven by vanishing correlations (as a function of increasing n) between ψ hole 1 (r) and ψ elec 1 (r), which are localized on the dimethylamino donor moiety and the nitro acceptor moiety, respectively. Notably, the S 0 → S 1 excitation energy has essentially converged (as a function of length) by n = 8, which is consistent with convergence of d exc to d e-h .