Isomerism: Minor Changes in the Bromine Substituent Positioning Lead to Notable Differences in Photovoltaic Performance

An isomerism strategy was employed to develop single, endgroup bromine-substituted nonfullerene two isomeric acceptors, 2,2′-((2Z,2′Z)-((12,13-bis(2-ethylhexyl)-3,9-diundecyl-12,13-dihydro-[1,2,5]t...