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Microporous Hexanuclear Ln(III) Cluster-Based Metal–Organic Frameworks: Color Tunability for Barcode Application and Selective Removal of Methylene Blue

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journal contribution
posted on 12.12.2016, 13:48 authored by Ming-Liang Gao, Wen-Jing Wang, Lin Liu, Zheng-Bo Han, Na Wei, Xiao-Man Cao, Da-Qiang Yuan
Two hexanuclear Ln­(III) cluster-based metal–organic frameworks (MOFs) (Ln = Tb or Eu) and a series of isomorphic bimetallic Ln­(III)-MOFs have been synthesized by changing the ratio of Tb­(III) and Eu­(III) under solvothermal conditions. The excellent linear color tunability (from green to red) makes them suitable for barcode application. In addition, the anionic Ln­(III)-MOFs exhibit superior uptake capacity toward methylene blue (MB+) by an ion-exchange process, and its reversible adsorption performance makes 1 suitable for removal of organic dye MB+. The as-prepared anionic hexanuclear Ln­(III) cluster-based MOFs can serve as a multifunctional material for an optical and environmental area.

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