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DAS if T = 77 K, 0.7 ps (dotted line), 34 ps (dashed line) (a), T = 110 K, 0.5 ps (dotted line), 37 ps (dashed line) (b), T = 150 K, 0.5 ps (dotted line), 33 ps (dashed line) (c), and T = 240 K, 0.4 ps (dotted line), 18 ps (dashed line) (d). The long-lived spectra are indicated by the solid lines.
