Fluorescence profile of conjugates 4–6, 18, 19 and BODIPY dyes 7, 20.

Compound	Solvent	λ exc (nm)	λ em (nm)	Δλ (nm)	QY (%)
4	HEPES	515	527	12	1.4
	DMSO/HEPES	517	531	14	7.7
5	HEPES	516	525	9	14
	DMSO/HEPES	520	530	10	58
6	HEPES	517	525	8	32
	DMSO/HEPES	521	532	11	53
7	HEPES	480	523	43	77
	DMSO/HEPES	496	523	40	95
18	DMSO/HEPES	521	549	28	23
19	DMSO/HEPES	520	531	11	95
20	DMSO/HEPES	521	550	29	48