Table 1.

Photophysical properties of the new Cu^I photosensitizers.^[a,b]

Sample	λ abs [nm]	λ em [nm]	PLQY[c]	τ [d] [μs]
1	395[a]	633	0.014	2.25
	398[b]	640[b]	<0.001[b]	0.107[b]
2 a	386[a]	635	0.013	1.26
	388[b]	646[b]	<0.001[b]	0.109[b]
2 b	388[a]	630	0.017	2.65
	388[b]	650[b]	<0.001[b]	0.125[b]
2 c	388[a]	636	0.023	2.31
	387[b]	643[b]	<0.001[b]	0.128[b]

[a] In Ar‐saturated DCM solution. [b] In Ar‐saturated ACN. [c] Photoluminescence quantum yields were measured with the relative method using Ru(bpy)₃Cl₂ in aerated water solution as standard (PLQY=0.040).23 [d] Lifetimes were measured with TCSPC using Nanoled for excitation (λ _exc=366 nm)