Electrospun nanofiber membranes from polysulfones with chiral selector aimed for optical resolution

► Nanofiber membranes were prepared by electrospray deposition method. ► Nanofiber membranes were prepared from modified polysulfones bearing alanyl residues. ► Flux values of nanofiber membranes were enhanced two to three orders of magnitude. ► Nanofiber membrane gives enhanced flux without concurrent reduction in selectivity.