Table 1.

Photophysical characterization of molecules 1–3 in ethanol (unless otherwise stated)^a

	λabs (nm), ε (dm3 mol−1 cm−1)	λfl (nm)	Φ F	ΦBb(×10−6)	SM Ntotc(×106)
1	390, 17 020	n/a	n/a	n/a	n/a
2	497, 15 300	609	0.021, 0.27d	5.6	1.7
3	570, 54 100	613	0.025, 0.39d	4.1	2.3

^aSee ESI† and ref. 28 for details on measurements and calculations.

^bBulk quantum yield of permanent photobleaching, measured in aqueous PVA polymer film.

^cAverage total number of photons emitted for SMs in PVA polymer film.

^dFluorescence quantum yield in PMMA.