“…Fe 3 O 4 nanoparticles (NPs) are commonly used magnetic material because of their excellent magnetism and biocompatibility . Recently, some types of nanomaterials possessing photoluminescent-magnetic bifunctionality have been reported, which benefit many technical areas such as magnetic resonanece, cell separation, drug targeting, and biological imaging. − As the popular conducting polymers, polyaniline (PANI) has been widely researched and applied in many areas like secondary batteries, electromagnectic interference (EMI) shielding, and catalysts because of its light weight, low cost, tunable conductivity, and environmental stability. , By now, trifunctional Eu(BA) 3 phen/PANI/Fe 3 O 4 /PVP hollow nanofibers fabricated by electrospinning process are emerged in the literature . In view from previous work by us and other researchers, as for the luminescent-electrical-magnetic trifunctional materials, the luminescent intensity of RE compounds will greatly decline if the RE compounds directly contact with deep-colored materials like Fe 2 O 3 , Fe 3 O 4 , and PANI. , Therefore, it is urgently needed to find a new way of effectively isolating luminescence materials from Fe 2 O 3 , Fe 3 O 4 and PANI.…”