School of Chemistry & Materials Science, Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials, Jiangsu Normal University, Xuzhou 221116, PR China.
School of Chemistry & Materials Science, Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials, Jiangsu Normal University, Xuzhou 221116, PR China.
Spectrochim Acta A Mol Biomol Spectrosc. 2024 Dec 5;322:124804. doi: 10.1016/j.saa.2024.124804. Epub 2024 Jul 10.
The fabrication of luminescent dye@MOF composites has received extensive attentions in the development of realistic sensing applications. Herein, based on two anionic In-MOFs with different pore structure (1 and 2), the charge and size dependent ion-exchange of cationic dyes was investigated, and consequently four luminescent dye@MOF composites (DMASM@1/2 and RhB@1/2) were successfully fabricated and importantly can be regarded as ideal platforms for better understanding of the factors affecting the construction of dye@MOF composites, which may closely related to a well match between the intrinsic properties and size/charge of the fluorescent molecules and the porosity, structure character of the MOF hosts. Furthermore, these four dye@MOF composites were utilized for sensing of different kinds of antibiotics, demonstrating enhanced selectivity and sensitivity. DMASM@1/2 demonstrated excellent selectivity and sensitivity for NFT and NFZ antibiotics, while RhB@1/2 exhibited excellent selectivity and sensitivity for MDZ and DTZ antibiotics. Systematic analysis of the detection mechanism revealed that different energy transfer efficiency and interaction between MOF frameworks and different types of guest dyes led to different selectivity and detection mechanisms for antibiotics. Moreover, high selectivity and sensitivity, low LOD and extraordinary recycling capacity of four dye@MOF composites in the detection of antibiotics promote their excellent prospect in the further practical application.
发光染料@MOF 复合材料的制备在现实感测应用的发展中受到了广泛关注。在此，基于两种具有不同孔结构的阴离子 In-MOF（1 和 2），研究了阳离子染料的荷质比依赖性离子交换，随后成功制备了四种发光染料@MOF 复合材料（DMASM@1/2 和 RhB@1/2），并可将其视为深入了解影响染料@MOF 复合材料构建的因素的理想平台，这可能与荧光分子的固有性质和尺寸/电荷与 MOF 宿主的孔隙率、结构特征之间的良好匹配密切相关。此外，这四种染料@MOF 复合材料被用于不同类型抗生素的感测，表现出增强的选择性和灵敏度。DMASM@1/2 对 NFT 和 NFZ 抗生素表现出优异的选择性和灵敏度，而 RhB@1/2 对 MDZ 和 DTZ 抗生素表现出优异的选择性和灵敏度。检测机制的系统分析表明，不同的能量转移效率和 MOF 骨架与不同类型客体染料之间的相互作用导致了抗生素具有不同的选择性和检测机制。此外，四种染料@MOF 复合材料在抗生素检测中具有高选择性和灵敏度、低 LOD 和非凡的可回收能力，这促进了它们在进一步实际应用中的出色前景。
