研究目的
To construct hetero-structured microyarns with tunable luminescence colors and electrical conductivity using conjugate electrospinning, achieving effective separation of conductive and luminescent components for enhanced performance.
研究成果
Hetero-structured microyarns with enhanced luminescence and tunable electrical conductivity were successfully fabricated. The separation of components in different nano?bers improved performance, with luminescence color adjustable via rare earth complex ratios and conductivity modulable via PANI content. This approach can be extended to other multifunctional materials for applications in displays and electronics.
研究不足
The study does not explicitly discuss limitations, but potential areas include scalability of the electrospinning process, long-term stability of the microyarns, and optimization for specific applications such as wearable devices.
1：Experimental Design and Method Selection:
A conjugate electrospinning technique was used to fabricate hetero-structured microyarns composed of luminescent and conductive nano?bers. The design aimed to separate polyaniline (PANI) from rare earth complexes to prevent luminescence quenching.
2：Sample Selection and Data Sources:
Samples were prepared with varying mass ratios of terbium and europium complexes (Tb(BA)3phen and Eu(BA)3phen) and percentages of PANI in polyacrylonitrile (PAN) solutions. Specific compositions are detailed in Tables I and II of the paper.
3：List of Experimental Equipment and Materials:
Materials included N,N-Dimethylformamide (DMF), PAN, nitric acid, benzoic acid, aniline, ammonia, phenanthroline, ammonium persulfate, camphor sulfonic acid, Tb4O7, and Eu2O3, all purchased from Aladdin Chemistry Co., Ltd. Equipment included syringes, power supplies, a funnel, metal wire, and a metal rod for electrospinning setup.
4：Experimental Procedures and Operational Workflow:
Spinning solutions A (for luminescent nano?bers) and B (for conductive nano?bers) were prepared. Conjugate electrospinning was performed with solutions ejected from syringes connected to power supplies, forming nano?ber bundles twisted into microyarns collected on a metal rod. Parameters: room temperature, 30 ± 5% humidity, 100 r min?1 funnel speed.
5：Data Analysis Methods:
Morphology was analyzed using SEM (XL-30) with EDS for composition. Electrical conductivity was measured with a four-probe tester (RTS-4). Luminescence was analyzed with a fluorescence spectrophotometer (F-4500), including excitation and emission spectra, decay curves, and CIE chromaticity coordinates.
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