Table 1. Photophysical Properties of D in Various Solvents Measured at r.t. and Values Marked in Bold Were Calculated at the TD-DFT Level^a.

solvent	λabs [nm]	ϵ [M–1 cm–1]	λem [nm]	Stokes [cm–1]	FQY [%]	τ [ns]	kr [109 s–1]	knr [109 s–1]	χ2
C6F6	420	20,290	490	3400	35.1	2.91	0.121	0.223	1.101
C6F5Cl	425	20,270	484	2870	39.8	2.97	0.134	0.203	1.042
	382		437	3293
C6F5Br	425	20,330	493	3245	34.1	2.59	0.130	0.254	1.075
	385		454	3938
C6F5I	430	20,620	539	4702	1.4	0.51	0.027	1.933	1.364
	388		473	4623

^aThe τ for C₆F₅I is the weighted average of two lifetimes, τ = 0.48 (α = 0.94) and τ = 1.01 ns (α = 0.06).