Zhang Fa-Heng, Jiang Rui-Xue, Cao Wei, Du Bin, Cao Ding-Yuan, Ding Zhi-Jun, Li Zhi-Jun
Research Institute of Chemical Defense Beijing 102205 China
College of Chemical Engineering, China University of Petroleum Huadong Qingdao Campus Qingdao 266580 China.
RSC Adv. 2019 Apr 23;9(22):12585-12589. doi: 10.1039/c9ra00502a. eCollection 2019 Apr 17.
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.
弥合“纳米尺度”片段与“产品规模”的材料、器件或机器之间的差距是人们必须应对的一项不可避免的挑战。在此，我们表明，将自组装和静电纺丝工艺相结合可制备出各向异性荧光纳米纤维（PDI@PVDF），其中定义明确的棒状苝二酰亚胺衍生物聚集体以高度取向的方式沿聚偏氟乙烯（PVDF）纤维的轴嵌入。与易碎的单个PDI聚集体相比，静电纺丝各向异性荧光PDI@PVDF纳米纤维不仅对苯胺蒸汽保持高灵敏度，而且在猝灭和恢复方面均表现出意外的短响应时间。结果表明，静电纺丝辅助是维持荧光纳米材料各向异性的一种通用且有效的策略，在自组装纳米棒与实用材料之间架起了一座桥梁。
