The LRC-ωPBE functional does not incorporate any exact exchange at short range, meaning that c hfx = 0 in eq. 1. For comparison, we also examine the LRC-ωPBEh functional that uses c hfx = 0.2 and sets ω = 0.2 bohr -1 by fiat, based on empirical fitting. TD-DFT results using this functional are similar to those obtained using the optimally tuned LRC-ωPBE functionals (Fig. ). This is not surprising, given where the tuning procedures landed and the observed insensitivity to ω. Furthermore, these results indicate why LRC-ωPBEh is an effective choice for systems whose excited states exhibit charge-separated character. It is interesting that LRC-ω GDD PBE results hew more closely to LRC-ωPBEh than do the IE-tuned results.