Issue 24, 2018

Iron(iii) identification and proton conduction of a luminescent cadmium–organic framework

Abstract

The multifunctional organic bridging ligand, 2-phenyl(3,4-dimethyl)-1-H-imidazole-4,5-dicarboxylic acid (H3DMPhIDC), was reacted with Cd(II) ions to form a luminescent metal–organic framework, [Cd(HDMPhIDC)(H2O)]n (1), which has been successfully synthesized and structurally characterized. MOF 1 shows 1D chain structure and good recognition performance for Fe3+ ions. The luminescent quenching efficiency for iron(III) is 89.46% and the detection limit is 3.98 × 10−6 M in aqueous solution. The recognition mechanism of Fe3+ has been explored by UV-Vis and PXRD determinations. Furthermore, the proton conduction of MOF 1 has been investigated. Interestingly, 1 has a high proton conductivity value of 1.30 × 10−4 S cm−1 at 100 °C and 98% RH. The large activation energy indicates that proton transfer in 1 through the vehicular mechanism.

Graphical abstract: Iron(iii) identification and proton conduction of a luminescent cadmium–organic framework

Supplementary files

Article information

Article type
Paper
Submitted
25 Aug 2018
Accepted
05 Nov 2018
First published
06 Nov 2018

New J. Chem., 2018,42, 20197-20204

Iron(III) identification and proton conduction of a luminescent cadmium–organic framework

X. Xie, S. Yu, C. Yang, J. Zhang, Z. Li and G. Li, New J. Chem., 2018, 42, 20197 DOI: 10.1039/C8NJ04331K

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