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Issue 37, 2014
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A series of lanthanide–organic frameworks possessing arrays of 2D intersecting channels within a 3D pillar-supported packed double-decker network and Co2+-induced luminescence modulation

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Abstract

A new family of three-dimensional lanthanide metal–organic frameworks (Ln-MOFs) formulated as {Ln(NDC)1.5(DMF)(H2O)0.5·0.5DMF}n (Ln = Ce, Pr, Nd, Eu; DMF = N,N′-dimethylformamide; NDC = 2,6-naphthalenedicarboxylic acid) (FJU6) was prepared using a combination of extended dicarboxylate ligands and lanthanide cations under mild hydrothermal conditions. FJU6 contains a rare packed double-decker unit. The adjacent packed double-decker units are further pillared by NDC ligands through different coordination modes, resulting in the generation of a porous 3D framework. Notably, arrays of two-dimensional intersecting channels, occupied by coordinated and guest DMF molecules, are found in FJU6. Strong hard acid–hard base interactions between Ln3+ cations and NDC2− anions, along with strong π–π interactions, were observed between packed 2D double-decker architectures, resulting in a high thermal stability of FJU6 as evidenced by TG analysis. The structural diversity and photoluminescence properties of the frameworks were also investigated. Significantly, in the case of Eu-FJU6, the apparent luminescence modulation induced by presence of diverse amounts of cobalt cations is observed.

Graphical abstract: A series of lanthanide–organic frameworks possessing arrays of 2D intersecting channels within a 3D pillar-supported packed double-decker network and Co2+-induced luminescence modulation

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Supplementary files

Article information


Submitted
05 Mar 2014
Accepted
28 Jul 2014
First published
29 Jul 2014

CrystEngComm, 2014,16, 8852-8862
Article type
Paper
Author version available

A series of lanthanide–organic frameworks possessing arrays of 2D intersecting channels within a 3D pillar-supported packed double-decker network and Co2+-induced luminescence modulation

Y. Liu and P. Chien, CrystEngComm, 2014, 16, 8852
DOI: 10.1039/C4CE00461B

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