| 王昊,李慧珺,李颖.铝基MOFs@CDs复合材料构筑及其发光二极管应用研究[J].有色金属材料与工程,2025,46(4):10-19. |
| 铝基MOFs@CDs复合材料构筑及其发光二极管应用研究 |
| Research on the construction of aluminum-based MOFs@CDs composites and their application in light-emitting diodes |
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| DOI：10.13258/j.cnki.nmme.20240224001 |
| 中文关键词: 碳点 金属-有机框架 形貌调控 发光二极管 |
| 英文关键词:carbon dots metal-organic frameworks morphology control light-emitting diode device |
| 基金项目:上海市科委项目（21ZR1444200） |
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| 摘要点击次数: 162 |
| 全文下载次数: 136 |
| 中文摘要: |
| 采用溶剂热法制备了氮掺杂碳点（nitrogen doped carbon point, N-CDs），并采用原位水热法制备了铝基金属-有机框架(metal-organic frameworks, MOFs)@CDs复合材料[MIL-53(Al)-NH2@N-CDs]。N-CDs表面丰富的羧基官能团使其能够参与Al-MOFs的配位组装过程，并通过空间位阻效应限制MOFs晶体结构的取向和生长，从而实现了对MOFs的形貌调控，使其从三维齿轮状转变为短棒交叉纳米花状。此外，基于MIL-53(Al)-NH2@N-CDs的荧光特性，进一步制备了具有可调的多色发射的发光二极管（light-emitting diode, LED）器件。结果表明，N-CDs可以有效调控MIL-53(Al)-NH2的形貌和荧光性质。同时，分析了N-CDs调控MIL-53(Al)-NH2组装行为机制，为新型 MOFs 形貌与结构的定向设计提供了普适性策略，也为开发高性能多色 LED 器件开辟了新路径。 |
| 英文摘要: |
| The nitrogen-doped carbon dots (N-CDs) were prepared by solvent-thermal method in this study, and the Al-based metal-organic frameworks decorated with N-CDs composite material (MIL-53(Al)-NH2@N-CDs) was fabricated by in-situ hydrothermal method. The abundant carboxyl functional groups on the surface of N-CDs enabled their participation in the coordination assembly process of Al-MOFs, and through the spatial hindrance effect, the orientation and growth process of MOFs crystals were restricted, thereby achieving the morphology control of MOFs, transforming them from three-dimensional gear-like structures to short rod-like cross-linked nano-flowers. Additionally, based on the fluorescence properties of MIL-53(Al)-NH2@N-CDs, fluorescent-tunable multi-color light-emitting diode(LED) devices were further fabricated. The results demonstrate that N-CDs can effectively regulate the morphology and fluorescence properties of MIL-53(Al)-NH2. Furthermore, the mechanism underlying the regulation of MIL-53(Al)-NH2 assembly behavior by N-CDs was analyzed, which provided a design method for synthesizing novel MOFs morphological structures， and also offered a new insight for developing high-performance multi-color LED devices. |
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