The controllable synthesis of MOF materials is of great significance for its application. At present, the regulation of MOF morphology is mainly limited to those composed of transition metal elements, such as IRMOF, ZIF-8, HKUST-1, UiO-66, and MIL-MOFs etc, and few reports about the fabrication ofmicro/nano sized lanthanide MOFs could be found in literature. In this paper, micron sized Eu-1,4-NDC-fcu-MOF octahedral particles were obtained via a modified solvothermal method by using methylamine as a modulator. The luminous efficiency of Eu3+ was greatly improved due to the efficient energy transfer from the 1,4-NDC ligand to rare earth ion. The resultant Eu-1,4-NDC-fcu-MOFs particles could be used to detect benzidine in ethanol solution effectively, and as the concentration of benzidine increased, the fluorescence intensity of Eu-1,4-NDC-fcu-MOFs gradually decreased. Due to the good stability, high luminescent intensity and excellent sensitivity, this work further demonstrates that Ln-MOF are ideal fluorescent probes to identify specific molecules.

中文翻译：

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简便地制备Eu-1,4-NDC-fcu-MOF颗粒以检测联苯胺

MOF材料的可控合成对其应用具有重要意义。目前，MOF形态的调控主要限于由过渡金属元素组成的分子，如IRMOF，ZIF-8，HKUST-1，UiO-66和MIL-MOF等，有关微纳米加工的报道很少。文献中可以找到大型的镧系元素MOF。本文采用甲胺作为调节剂，通过改进的溶剂热法制备了微米级的Eu-1,4-NDC-fcu-MOF八面体颗粒。由于从1,4-NDC配体到稀土离子的有效能量转移，大大提高了Eu3 +的发光效率。所得的Eu-1,4-NDC-fcu-MOFs颗粒可用于有效检测乙醇溶液中的联苯胺，并且随着联苯胺浓度的增加，Eu-1的荧光强度，4-NDC-fcu-MOF逐渐减少。由于具有良好的稳定性，高发光强度和出色的灵敏度，这项工作进一步证明了Ln-MOF是鉴定特定分子的理想荧光探针。