Shaping the future of white light: tailoring emission profiles in hybridized AIE-MOF emissive micro-fibers for enhanced quantum yield Vishal Kachwal , Samraj Mollick, Jin-Chong Tang Department of Engineering Science, University of Oxford, UK Tuning emission properties is crucial for applications such as lighting and displays. Hybrid composite materials like MOFs with AIE-active ligands combine organic and inorganic components, enabling broad-spectrum emission and enhanced stability. AIE-active MOFs improve luminescence efficiency by providing better control over local environments and interactions, allowing tailored emission properties. Electrospun fibres, recognized for their high surface area-to-volume ratio and diverse morphologies, are integrated with AIE-MOFs to achieve tunable, high quantum yield white light emission. This approach outperforms traditional white light technologies, such as phosphor-converted LEDs and OLEDs, presenting advanced scientific opportunities in emission control and efficiency. [1,2, 3] Here in, we designed and synthesized hybrid AIE-MOFs (Figure1 (I)) using various D-A type AIE-active ligands (Figure1 (III)), achieving tunable emission properties across the visible spectrum. By incorporating AIE-MOFs into polymers for electrospun fibres, we fabricated tunable emission microfibers (Figure 1 (IV)) with enhanced performance compared to AIE-MOF powders. Sophisticated characterization techniques, such as micro-Raman, XPS, and nano-FTIR, were employed for property analysis. High-performance Janus-type white light-emitting fibre composites were fabricated using side-by-side electrospinning (Figure 1 (II)), achieving an impressive 58% quantum yield. This research underscores the potential of AIE-MOF-based white light-emitting fibres, rationally integrating AIE-active ligands, MOFs, and fibres, and establishes a new benchmark for efficient white light sources in optoelectronics.
Figure 1- Showing schematic representation of (I) synthesis of AIE-MOF, (II) side-by-side electrospinning, (III) AIE-Ligands, (IV) AIE-MOF Microfiber under 365 UV lamp References 1. X.-Y. Liu, K. Xing, Y. Li, C.-K. Tsung, J. Li, J. Am. Chem. Soc. 2019, 141, 14807X.-Y. Liu, K. Xing, Y. Li, C.-K. Tsung, J. Li, J. Am. Chem. Soc. 2019, 141, 14807 2. M. Gutiérrez, Y. Zhang, J.-C. Tan, Chem. Rev. 2022, 122, 10438. 3. V. Kachwal, J.-C. Tan, Adv. Sci. 2023, 10, 2204848
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