Cis- and trans-isomerization-induced transition of charge transport property in PPV oligomers

► 2,5-diphenyl-1,4-distyrylbenzene (DPDSB) is a model compound of PPV derivatives. ► Cis→trans isomerization induces significant changes in charge transport property. ► Cis-DPDSB displays hole-majority transport while trans-DPDSB shows balanced one. ► This finding helps to understand structure/property relationship in PPV derivatives.