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

A new metal–organic framework (MOF), [{(H 3 O)[Eu (SBDB)(H 2 O) 2 ]} n ] (H 4 SBDB = 1,5-disulfo-benzene-2,4-dicarboxylic acid) ( 1 ), was successfully synthesized under solvothermal conditions. Ten central Eu 3+ ions are coordinated by the H 4 SBDB ligands and two coordination water molecules. The...

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Bibliographic Details
Published in:CrystEngComm 2018, Vol.20 (43), p.6989-6994
Main Authors: Yuan, Yue-Ying, Yang, Shuai-Liang, Zhang, Chen-Xi, Wang, Qing-Lun
Format: Article
Language:English
Subjects:
Ascorbic acid
Benzene
Chains
Chemical synthesis
Crystallography
Europium
Hydrogen bonds
Ligands
Metal-organic frameworks
Organic chemistry
Oxygen atoms
Planar structures
Stability analysis
Water chemistry
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Summary:A new metal–organic framework (MOF), [{(H 3 O)[Eu (SBDB)(H 2 O) 2 ]} n ] (H 4 SBDB = 1,5-disulfo-benzene-2,4-dicarboxylic acid) ( 1 ), was successfully synthesized under solvothermal conditions. Ten central Eu 3+ ions are coordinated by the H 4 SBDB ligands and two coordination water molecules. The adjacent Eu 3+ ions are connected by oxygen atoms from carboxyl groups, forming a 1D chain. 1D chains are linked by H 4 SBDB 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.
ISSN:1466-8033
1466-8033
DOI:10.1039/C8CE01506F