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Issue 43, 2018
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A new europium metal–organic framework with both high proton conductivity and highly sensitive detection of ascorbic acid

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Abstract

A new metal–organic framework (MOF), [{(H3O)[Eu (SBDB)(H2O)2]}n] (H4SBDB = 1,5-disulfo-benzene-2,4-dicarboxylic acid) (1), was successfully synthesized under solvothermal conditions. Ten central Eu3+ ions are coordinated by the H4SBDB ligands and two coordination water molecules. The adjacent Eu3+ ions are connected by oxygen atoms from carboxyl groups, forming a 1D chain. 1D chains are linked by H4SBDB ligands to induce a 2D infinitely extensible planar structure, and then connected by hydrogen bonds to form a 3D supernetwork structure. Complex 1 exhibits excellent thermal and chemical stability. AC impedance analysis shows that the highest proton conductivity of 1 reaches up to 1.0 × 10−4 S cm−1 (338 K, 98% RH). Furthermore, complex 1 is an excellent luminescence-based sensor with high sensitivity and a low detection limit for ascorbic acid (AA) in aqueous solutions.

Graphical abstract: A new europium metal–organic framework with both high proton conductivity and highly sensitive detection of ascorbic acid

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Publication details

The article was received on 05 Sep 2018, accepted on 12 Oct 2018 and first published on 12 Oct 2018


Article type: Paper
DOI: 10.1039/C8CE01506F
Citation: CrystEngComm, 2018,20, 6989-6994
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    A new europium metal–organic framework with both high proton conductivity and highly sensitive detection of ascorbic acid

    Y. Yuan, S. Yang, C. Zhang and Q. Wang, CrystEngComm, 2018, 20, 6989
    DOI: 10.1039/C8CE01506F

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