Table 1.

Decay times of DADS obtained by global analysis for different solvents and means of radical generation.

Radical generation	Solvent	Polarity[a]	DADS decay times
method		[kcal mol−1]	${\tau }_1$ [ps]	${\tau }_2$ [ps]	${\tau }_3$ [ps]	${\tau }_4$ [ps]
green LED+DIPEA	MeCN	45.6	0.2	10.1	>3000	–
green LED+DIPEA	DMSO	45.1	0.31	8.4	>3000	685
green LED+DIPEA	CH2Cl2	40.7	0.48	10.9	>3000	433
activated Zn	DMSO	45.1	0.33	8.8	>3000

[a] Based on the E _T(30) scale of polarity (see ref. 16).