Table 3.

Optimized biexponential fitting parameters of the center line slope extracted from the 2DIR spectra. The CLS was fit with the following function $\text{CLS}(\text{t})={\text{A}}_1\exp \left(-\frac{\text{t}}{{\text{t}}_{1,\text{CLS}}}\right)+{\text{A}}_2\exp \left(-\frac{\text{t}}{{\text{t}}_{2,\text{CLS}}}\right)$. The error bars represent 95% confidence interval.

	A1	t1,CLS (ps)	A2	t2,CLS (ps)
1PMe3	0.38 ± 0.02	0.7 ± 0.1	0.17 ± 0.01	16 ± 3
1PMe2Ph	0.34 ± 0.04	0.7 ± 0.1	0.33 ± 0.02	20 ± 4
1PMePh2	0.19 ± 0.03	0.6 ± 0.1	0.48 ± 0.01	21 ± 1
Free ${\text{N}}_3^{-}$	0.40 ± 0.01	1.0 ± 0.1	0.25 ± 0.01	17 ± 2