Chen You-Liang, Kurniawan Darwin, Tsai Meng-Dian, Chang Jhe-Wei, Chang Yu-Na, Yang Shang-Cheng, Chiang Wei-Hung, Kung Chung-Wei
Department of Chemical Engineering, National Cheng Kung University, Tainan City, Taiwan.
Department of Chemical Engineering, National Taiwan University of Science and Technology (NTUST), Taipei City, Taiwan.
Commun Chem. 2024 May 11;7(1):108. doi: 10.1038/s42004-024-01192-5.
Immobilization of graphene quantum dots (GQDs) on a solid support is crucial to prevent GQDs from aggregation in the form of solid powder and facilitate the separation and recycling of GQDs after use. Herein, spatially dispersed GQDs are post-synthetically coordinated within a two-dimensional (2D) and water-stable zirconium-based metal-organic framework (MOF). Unlike pristine GQDs, the obtained GQDs immobilized on 2D MOF sheets show photoluminescence in both suspension and dry powder. Chemical and photoluminescent stabilities of MOF-immobilized GQDs in water are investigated, and the use of immobilized GQDs in the photoluminescent detection of copper ions is demonstrated. Findings here shed the light on the use of 2D MOFs as a platform to further immobilize GQDs with various sizes and distinct chemical functionalities for a range of applications.
将石墨烯量子点（GQDs）固定在固体载体上对于防止GQDs以固体粉末形式聚集以及便于使用后GQDs的分离和回收至关重要。在此，空间分散的GQDs在二维（2D）且水稳定的锆基金属有机框架（MOF）内进行后合成配位。与原始GQDs不同，固定在2D MOF片材上的所得GQDs在悬浮液和干粉中均显示出光致发光。研究了MOF固定的GQDs在水中的化学稳定性和光致发光稳定性，并证明了固定化GQDs在铜离子光致发光检测中的应用。此处的研究结果为使用2D MOF作为平台进一步固定具有各种尺寸和不同化学功能的GQDs以用于一系列应用提供了思路。
