Adopting a mixed ligand strategy, a novel fluorescent chain-based 3D metal–organic framework, [Zn(BPTC)_0.5(Tz)]·DMF·CH₃OH (1), has been synthesized by the solvothermal method. The obtained hybrid has two kinds of 1D channel, one of which is surrounded by the uncoordinated nitrogens of Tz ligands. Owing to the well-isolated feature of tetrazole moieties within the framework, compound 1 is greatly armed with accessible recognition sites, which exhibits a turn-off luminescence sensing for Cu²⁺ ions. Besides, thanks to the mono-dentate oxygen atom of the carboxylic group, compound 1 could absorb a similar number of Ln³⁺ ions and manifests selective sensitization of different Ln³⁺ ions.

中文翻译：

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具有路易斯碱性位点的双功能金属-有机骨架，显示了Cu ²⁺的关闭感应和Ln ^3+的敏化†

采用混合配体策略，通过溶剂热法合成了一种新型的基于荧光链的3D金属-有机骨架[Zn（BPTC）_0.5（Tz）]·DMF·CH ₃ OH（1）。所获得的杂种具有两种一维通道，其中一种被Tz配体的未配位氮包围。由于框架中四唑部分的良好隔离特性，化合物1极大地配备了易于接近的识别位点，该位点表现出对Cu ²⁺离子的关断发光感应。此外，由于具有羧基的单齿氧原子，化合物1可以吸收相似数量的Ln ³⁺离子，并表现出不同的Ln ³⁺离子的选择性敏化。