Unique-structured [NaYF₄:Yb³⁺,Tm³⁺/polymethylmethacrylate (PMMA)]//[polyaniline (PANI)/PMMA]//[CoFe₂O₄/PMMA] fluorescent-conductive-magnetic tricolor flag-shaped nanobelt and array (marked as FCM-TNA) are innovatively designed and constructed by using tri-axial parallel electrospinning. Partition of three independent functional zones is microscopically realized in the tricolor flag-shaped nanobelt to avoid harmful mutual influences among three functions via confining luminescent, conductive and magnetic substances into their own domains, and thus achieving superior fluorescent-conductive-magnetic trifunction. Tricolor flag-shaped nanobelt used as building unit ensures excellent fluorescence, anisotropic conduction and magnetism of FCM-TNA. FCM-TNA emits blue fluorescence upon 980-nm laser excitation. Conductance ratio of conductive direction to insulating direction in FCM-TNA reaches 2.54 × 10⁸ when the mass percentage of PANI to PMMA is settled at 70%, achieving high conductive anisotropy. By adjusting the contents of NaYF₄:Yb³⁺,Tm³⁺ NPs, PANI and CoFe₂O₄ NPs, FCM-TNA exhibits tunable up-conversion fluorescence intensity, conductive anisotropy and magnetism. The formative mechanisms of tricolor flag-shaped nanobelt and FCM-TNA are advanced, and construction technologies are also established. Furthermore, neoteric 3D tubes and 3D + 2D complete banner-typed structures with similar multi-functionalities are derived from the FCM-TNA by using different construction strategies. The new design philosophy and technique can provide support for the design and construction of other new multifunctional anisotropic conductive materials in the future.

独特结构的[NaYF ₄ :Yb ³⁺ ,Tm ³⁺ /聚甲基丙烯酸甲酯(PMMA)]//[聚苯胺(PANI)/PMMA]//[CoFe ₂ O ₄ /PMMA]荧光-导电-磁性三色旗形纳米带和阵列（标记为FCM-TNA）采用三轴平行静电纺丝创新设计和构建。的三个独立的功能区域的分区中的三色旗形纳米带通过显微镜实现，以避免之间的三个功能有害相互影响通过将发光、导电和磁性物质限制在各自的域中，从而实现优异的荧光-导电-磁性三功能。作为构建单元的三色旗形纳米带确保了 FCM-TNA 优异的荧光、各向异性传导和磁性。FCM-TNA 在 980 nm 激光激发下发出蓝色荧光。当PANI与PMMA的质量百分比为70%时，FCM-TNA中导电方向与绝缘方向的电导比达到2.54×10 ⁸，实现了高导电各向异性。通过调整NaYF ₄ :Yb ³⁺、Tm ³⁺ NPs、PANI和CoFe ₂ O ₄的含量NPs、FCM-TNA 表现出可调的上转换荧光强度、导电各向异性和磁性。三色旗形纳米带和FCM-TNA的形成机制先进，构建技术也已建立。此外，具有相似多功能性的近代 3D 管和 3D + 2D 完整横幅型结构是通过使用不同的构建策略从 FCM-TNA 中衍生出来的。新的设计理念和技术可以为未来其他新型多功能各向异性导电材料的设计和构建提供支持。