Our previous study of the binding of these four excimers identified double hybrids-especially those with range separation (ωB2PLYP and ωB2GP-PLYP)-as the closest to the SCS-CC2/CBS(3,4) reference. However, these methods were limited by their inability to adequately describe dispersion interactions. The application of DFT-D type additive dispersion corrections reduced the average errors for each TD-DFT method compared to the reference. The impact of the DFT-D type corrections was method and system dependent.