Table 1.

Spectroscopic and photophysical properties of the unactivated and activated form of NO₂-Rosol.

Compound	λabs (nm)a	λem (nm)b	ε (M−1cm−1)	Φflc	Brightness (M−1cm−1)
NO2-Rosol (unactivated form)	550	710	11,000	0.0005	5.5
NH2-Rosol (activated form)	548	705	10,300	0.0205	210

^aMeasured maximum absorption wavelength of each compound in buffer;

^bMeasured maximum fluorescence emission wavelength of each compound upon photoexcitation at its respective λ_abs in buffer.

^cΦ_fl is the measured relative fluorescence quanum yield using erythrosine B in buffer as a reference (Φ_fl = 0.02).