Acid-induced Zn(ii)-based metal-organic frameworks for encapsulation and sensitization of lanthanide cationsElectronic supplementary information (ESI) available: Details of TG results and PXRD patterns. CCDC 1032538 (1) and 1032539 (2) contains the supplementary crystallographic data for this paper. For ESI and crystallographic data in CIF or other electronic format, see DOI: 10.1039/c5ce00083a

• Main Authors: He, Hongjie, Zhang, Lina, Deng, Mingli, Chen, Zhenxia, Ling, Yun, Chen, Jinxi, Zhou, Yaming
• Format: Article
• Language: English
• ISSN: 1466-8033
• DOI: 10.1039/c5ce00083a

Two Zn( ii )-based metal-organic frameworks, namely, [Zn 3 (Hbptc) 2 (DMF) 2 ]·2DMF( 1 ) and [Zn 5 (bptc) 3 (H 2 O)]((CH 3 ) 2 NH 2 ) 2 ( 2 ), (H 4 bptc = 3,3′,5,5′-biphenyltetracarboxylic acid, DMF = N , N ′-dimethylformamide), have been synthesized using different amounts of nitric acid under mixed-solvothermal conditions. 1 and 2 display different coordination geometries and donor ligands for the Zn 2+ ions. In 1 , only three carboxylic acid groups of H 4 bptc take part in the construction of the three-dimensional (3-D) framework with Zn 2+ , and one remains uncoordinated that can bind to other metal ions. Postsynthetic exchange of 1 with Ln 3+ cations demonstrates that 1 can effectively capture metal cations and sensitize the visible-emitting Ln 3+ . Two Zn( ii )-based metal-organic frameworks with different coordination geometries have been synthesized and one can effectively capture metal cations and sensitize the visible-emitting Tb 3+ .