Identification of a bridge-specific intramolecular exciton dissociation pathway in donor–π–acceptor alternating conjugated polymers

Table 1 Transient absorption kinetics fitting parameters [lifetime (τ) and weight coefficient (A)] of MC, EX, CT, and CT′ state

Sample	State	τ₁/ps (A)	τ₂/ps (A)	τ₃/ps (A)	τ₄/ps (A)	τ₅/ps (A)
HSD-A	MC	0.183 (− 0.46)	6.43 (− 0.28)	–	4950 (0.27)
HSD-B	MC	0.304 (− 0.51)	12.6 (− 0.29)	28.8 (− 0.03)	≥ 6000 (0.18)
HSD-C	MC	0.296 (− 0.39)	8.41 (− 0.24)	26.4 (− 0.16)	≥ 6000 (0.27)
HSD-A	EX	2.41 (0.38)	84.4 (0.24)	2450 (0.29)	≥ 6000 (0.09)
HSD-B	EX	0.712 (0.49)	18.4 (0.27)	735 (0.12)	≥ 6000 (0.12)
HSD-C	EX	0.408 (0.19)	7.96 (0.06)	627 (0.03)	4410 (− 0.35)	≥ 6000 (0.37)
HSD-A	CT	0.132 (− 0.54)	8.61 (0.07)	3250 (0.39)
HSD-B	CT	0.155 (− 0.53)	15.8 (0.19)	2790 (0.29)
HSD-C	CT	0.215 (− 0.51)	12.3 (0.17)	2240 (0.32)
HSD-B	CT′	0.289 (− 0.51)	30 (0.1)	2440 (0.39)
HSD-C	CT′	0.176 (− 0.52)	19.6 (0.08)	2050 (0.4)