Table 3. Experimental and Calculated Vertical Transition Energies (eV) and Transition Dipole Moments (Debye) for the Lowest-Energy Bright State.

	Expta	TDA-TD-B3LYPb		TD-B3LYPc
	ΔE	ΔE	μge	ΔE	μge
S1	3.25	3.13	9.2	3.00	8.0
S2	3.25	2.98	10.6	2.92	10.1
S3	3.20	2.93	12.0	2.89	11.9
S4	3.19	2.83	13.3

^aExperimental results from refs (65 and 67).

^bGPU accelerated TD-B3LYP computed within the Tamm–Dancoff approximation.

^cTD-B3LYP results from ref (67).