Photophysical properties of pyrene-BODIPY dyads with increasing degree of alkylation, in EtOH.

Molecule	λ max (nm)	λ max (nm)	Φ FLUO	Φ Δ
BDP-Pyr (ref. 50)	503	660	0.3%	75%
R2-BDP-Pyr (ref. 50)	512	511, 652	1.7%	25%
R4-BDP-Pyr (ref. 50)	502	511	65.1%	34%
R6-BDP-Pyr (ref. 50)	534	542	69.5%	4%