The morphologies and fluorescence quantum yields of perylene diimide dye-doped PS and PHVB microspheres.

Aggregation and continuous π-stacking have been the major obstacles hindering the fluorescence (FL) quantum yield ( ) of perylene diimide (PDI) derivatives in the condensed phase. To prepare polymer microspheres with nearly unity , in this work a POSS functionalized PDI derivative, POSS-PDI-POSS (PPP), was applied as the red fluorophore of poly(3-hydroxylbutyrate--3-hydroxyvalerate) (PHBV) and polystyrene (PS) microspheres. The electrosprayed PPP/PHBV and PPP/PS microspheres have unique hollow structures.