Department of Chemistry, Texas A&M University, College Station, Texas 77840-3012, USA.
Dalton Trans. 2018 Aug 29;47(34):11806-11811. doi: 10.1039/c8dt01508b.
A new luminescent mesoporous metal-organic framework (PCN-604) was successfully synthesized from trimetric clusters, Al3(O)(CH3COO)6, and pyridine-based tritopic linkers, 4,4',4''-(pyridine-2,4,6-triyl)tribenzoate (PTB), via a solvothermal reaction. The MOF with an MTN topology possesses remarkable aqueous and thermal stabilities. Due to the efficient binding sites rendered by the pyridyl-based linkers, PCN-604 shows a fast fluorescence response towards trace amounts of Fe3+ ions in water in a fluorescence-quenching mode. The Stern-Volmer quenching constant is calculated to be 8.53 × 103 M-1 and the limit of detection is 6.2 μM, which convincingly demonstrate the ability of the MOF for Fe3+ detection.
一种新型的发光介孔金属有机骨架（PCN-604）是通过三配位簇 Al3(O)(CH3COO)6 和基于吡啶的三联体连接体 4,4',4''-(吡啶-2,4,6-三基)三苯甲酸酯（PTB）在溶剂热反应中成功合成的。该 MOF 具有 MTN 拓扑结构，具有出色的水热稳定性。由于基于吡啶的连接体提供了有效的结合位点，PCN-604 在水相中以荧光猝灭模式对痕量 Fe3+离子表现出快速的荧光响应。计算出的 Stern-Volmer 猝灭常数为 8.53×103 M-1，检测限为 6.2 μM，这有力地证明了该 MOF 对 Fe3+检测的能力。
