Wang Guoyi, Ma Qianli, Tian Jiao, Fan Libing, Li Dan, Dong Xiangting, Yu Wensheng, Wang Jinxian, Liu Guixia
Key Laboratory of Applied Chemistry and Nanotechnology at Universities of Jilin Province, Changchun University of Science and Technology Changchun 130022 China
RSC Adv. 2018 Dec 21;9(1):206-214. doi: 10.1039/c8ra08588a. eCollection 2018 Dec 19.
A [FeO/polyvinyl pyrrolidone (PVP)]//[Tb(BA)phen/PVP] Janus nanofiber array pellicle (denoted JNAP) was successfully constructed by facile conjugate electrospinning without twisting for the first time. The JNAP offers the dual-functionality of fluorescence and magnetism. This technology entirely solves the dilemma of the magnetic spinning dope and fluorescent spinning dope being easily mixed together during the parallel electrospinning process, as it achieves complete segregation of magnetic nanoparticles and fluorescent molecules. Moreover, conjugate electrospinning without twisting has fewer requirements on the viscosity of the spinning dope compared with parallel electrospinning, in which the two spinning dopes should have the same viscosity. It was satisfactorily found that the JNAP has higher fluorescence intensity than the corresponding non-aligned Janus nanofiber pellicle. The magnetism of the JNAP could be tailored by changing the doping amount of the FeO NPs. The JNAP has potential applications in nanotechnology and biomedicine, , due to its enhanced green fluorescence and adjustable magnetism. In addition, this design concept and manufacturing process provide a facile way for preparing other one-dimensional Janus nanomaterials with multifunctionality.
首次通过简便的共轭静电纺丝法成功构建了一种[FeO/聚乙烯吡咯烷酮（PVP）]//[Tb(BA)phen/PVP] 双面纳米纤维阵列薄膜（简称JNAP），且无需捻合。JNAP具有荧光和磁性双重功能。该技术彻底解决了平行静电纺丝过程中磁性纺丝原液和荧光纺丝原液容易混合的难题，因为它实现了磁性纳米颗粒和荧光分子的完全分离。此外，与平行静电纺丝相比，无需捻合的共轭静电纺丝对纺丝原液的粘度要求更低，平行静电纺丝要求两种纺丝原液具有相同的粘度。令人满意的是，发现JNAP的荧光强度高于相应的非排列双面纳米纤维薄膜。JNAP的磁性可通过改变FeO纳米颗粒的掺杂量来调整。由于其增强的绿色荧光和可调节的磁性，JNAP在纳米技术和生物医学领域具有潜在应用。此外，这种设计理念和制造工艺为制备其他具有多功能的一维双面纳米材料提供了一种简便方法。
