Peculiarly Structured Janus Nanofibers Display Synchronous and Tuned Trifunctionality of Enhanced Luminescence, Electrical Conduction, and Superparamagnetism

• Published in: ChemPlusChem (Weinheim, Germany) Vol. 83; no. 3; pp. 108 - 116
• Main Authors: Xi, Xue, Ma, Qianli, Dong, Xiangting, Li, Dan, Yu, Wensheng, Wang, Jinxian, Liu, Guixia
• Format: Journal Article
• Language: English
• Published: Germany 01.03.2018
• Subjects: electrical conductivity; electrospinning; Janus nanofibers; luminescence; superparamagnetism; Janus nanofibers; luminescence; electrical conductivity; electrospinning; superparamagnetism
• ISSN: 2192-6506; 2192-6506
• DOI: 10.1002/cplu.201800030

Flexible peculiarly structured [(Fe3O4/PVP)@(Tb(BA)3phen/PVP)]//[PANI/PVP] (PVP=polyvinylpyrrolidone, BA=benzoic acid, phen=1,10‐phenanthroline, and PANI=polyaniline) Janus nanofibers synchronously endowed with tuned and enhanced luminescent–magnetic–electrical trifunctionality have been prepared by electrospinning technology by using a homemade coaxis//monoaxis spinneret. It is satisfactorily found that the luminescent intensity of the peculiarly structured Janus nanofibers is higher than those of the counterpart conventional [nanofiber]//[nanofiber] Janus nanofibers and composite nanofibers owing to its peculiar nanostructure. Compared with the counterpart conventional Janus nanofibers of two independent partitions, the coaxial nanocable is used as one side of the peculiarly structured Janus nanofiber instead of nanofiber, and three independent partitions are successfully realized in the peculiarly structured Janus nanofiber, thus the interferences among various functions are further reduced, leading to the fact that excellent multifunctionalities can be obtained. The Janus nanofibers possess excellent green luminescence, superparamagnetism, and electric conductivity, and further, these performances can be, respectively, tunable by modulating the Tb(BA)3phen, Fe3O4, and PANI contents. The design philosophy and construction technique for the peculiarly structured Janus nanofibers provide guidance for fabricating other multifunctional Janus nanofibers with various performances. Trifunctional coaxial nanocables: Flexible peculiarly structured [coaxial nanocable]//[nanofiber] Janus nanofibers with synchronous enhanced photoluminescence, electrical conduction, and superparamagnetism were fabricated by electrospinning (see figure). The luminescent intensity of the novel Janus nanofibers reaches up to 6 and 14 times higher than those of counterpart conventional [nanofiber]//[nanofiber] Janus nanofibers and composite nanofibers, respectively, owing to its peculiar nanostructure.