The potential utility of electrospun polystyrene (PS) nanofibers embedded with 2,6-dibromo-8-pyrenyl-1,3,5,7-tetramethyl BODIPY for the photocatalytic degradation of Orange G in wastewaters is investigated. A comparison of the singlet oxygen quantum yield of the BODIPY dye in solution and when embedded in the PS nanofibers demonstrates that its photosensitizer properties are maintained in the nanofiber mats. The photocatalytic degradation properties of the PS nanofibers for Orange G were determined using a 530 nm light emitting diode. The rate of photodegradation increases with the Orange G concentration and follows pseudo-first order kinetics at pH 6.7. Reusability studies demonstrate that there is an enhancement in the rate of degradation when the fibers are reused.

A 2,6-dibrominated BODIPY core dye with a meso-pyrenyl group has been investigated for use as a photosensitizer dye in photodynamic antimicrobial chemotherapy in the context of both gram-positive (Staphylococcus aureus) and gramnegative (Escherichia coli) bacteria, along with a π-extended 3,5-di-4-carboxystyrylBODIPY dye. The dyes are found to be effective for the treatment of S. aureus, but not in the case of E. coli.