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Construction of anisotropic fluorescent nanofibers assisted by electro-spinning and its optical sensing applications
- Zhang, Fa-Heng, Jiang, Rui-Xue, Cao, Wei, Du, Bin, Cao, Ding-Yuan, Ding, Zhi-Jun, Li, Zhi-Jun
- RSC advances 2019 v.9 no.22 pp. 12585-12589
- aniline, anisotropy, equipment, fluorescence, nanofibers, thermoplastics, vapors
- Fixing the gap between “nano-scaled” pieces and “product-scale” materials, devices or machines is an ineluctable challenge that people have to tackle. Herein, we show that combining self-assembly and electrospinning processes results in the fabrication of anisotropic fluorescent nanofibers (PDI@PVDF) in which the well-defined rod-like perylene bisimide derivative assemblies are embedded in a highly oriented way along the axis of the poly(vinylidene fluoride) (PVDF) fiber. Compared to fragile individual PDI assemblies, the electrospinning anisotropic fluorescent PDI@PVDF nanofibers not only maintain high sensitivity for aniline vapour but also exhibit an unexpected short response time for both quenching and recovering. The results demonstrate that electrospinning assistance is a versatile and effective strategy to maintain the anisotropy of fluorescent nanomaterials, building a bridge between self-assembled nano-rods and practical materials.