Table 1. Photophysical Properties of QTCy7-R.

compd	λabs (nm)a	λem (nm)b	Δλ (nm)c	ΦF (%)d	τS (ns)e	ΦΔf
QTCy7-Me	714	780	66	16.7	1.70	0.225
QTCy7-Ph	711	783	72	17.2	1.90	0.212
QTCy7-CHO	630	690	60	28.0	1.82	0.263
QTCy7-Ac	636	703	67	31.4	1.97	0.338
TCy7	770	793	23	19.3	1.54	0.026

^aMaximum absorption wavelength of the compound in dichloromethane.

^bMaximum emission wavelength of the compound in dichloromethane.

^cStokes shift of QTCy7-R.

^dAbsolute fluorescence quantum yield.

^eFluorescence lifetime of QTCy7-R in dichloromethane.

^fSinglet oxygen quantum yield in dichloromethane with methylene blue (MB) as the standard (Φ_Δ = 0.57 in dichloromethane).