Photophysical data for DSB derivatives in different solvents.

Solvent	λ ab (nm)	λ em (nm)	Stock shifts (cm−1)	ε (L mol−1 cm−1)	E (eV)
8a M
DMF	355	540	9650	96 836	3.49
CHCl3	355	552	10 053	73 757	3.49
THF	355	529	9265	94 671	3.49
Dioxane	355	509	8522	122904	3.49
Toluene	355	507	8445	88 301	3.49
8b P
DMF	355	532	9372	60 756	3.49
CHCl3	345	535	10 293	53 302	3.59
THF	352	524	9325	67 162	3.52
Dioxane	352	506	8646	62 334	3.52
Toluene	350	501	8611	64 526	3.54
8c Z
DMF	342	532	10 442	52 370	3.62
CHCl3	340	545	11 063	65 654	3.65
THF	340	527	10 436	69 341	3.65
Dioxane	340	511	9842	56 285	3.65
Toluene	340	508	9726	65 293	3.65
8d I
DMF	330	533	11 541	97 190	3.75
CHCl3	330	557	12 349	80 833	3.75
THF	330	530	11 435	87 939	3.75
Dioxane	328	504	10 646	98 910	3.78
Toluene	330	496	10 141	85 460	3.75
8e A
DMF	350	541	10 087	45 461	3.54
CHCl3	345	550	10 803	39 392	3.59
THF	345	529	10 081	49 873	3.59
Dioxane	345	509	9339	53 013	3.59
Toluene	345	507	9261	55 189	3.59