A decreasing trend in σ is noticed as follows: TTB5 (0.393) > TTB6 (0.354) > TTB4 (0.338) > TTBR (0.324) > TTB3 (0.317) > TTB1 (0.316) > TTB2 (0.314) in eV –1 .
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Unveiling peripheral symmetric acceptors coupling with tetrathienylbenzene core to promote electron transfer dynamics in organic photovoltaics.
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