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Issue 21, 2020
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Linear dicarboxylate-based pyridyl-appended cobalt(ii) coordination polymers in search of opto-electronic properties

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Abstract

Two new coordination polymers (CPs), namely [Co(adc)(4-ppy)(H2O)2]n, (1) and [Co(adc)(4-bppy)(H2O)2]n, (2) (H2adc = acetylenedicarboxylic acid, 4-ppy = 4-phenylpyridine and 4-bppy = 4-(4-bromophenyl)pyridine), have been synthesized and characterized via numerous techniques including elemental analysis, infrared spectroscopy, powder X-ray diffraction (PXRD), single crystal X-ray diffraction (SCXRD), and thermogravimetric analysis (TGA). Both the compounds form one-dimensional (1D) chain-like structures constructed by linear dicarboxylate and pyridyl-based organic linkers and show significant non-covalent interactions. Both the compounds exhibit electrical conductivity and reveal Schottky barrier diode behavior. However, compound 1 shows a slightly better electrical conductivity (2.61 × 10−5 S m−1) than compound 2 (2.52 × 10−6 S m−1). The optical band gaps of both compounds in the solid state have also been determined via experimental measurements and compared with the theoretical values obtained from DFT calculations.

Graphical abstract: Linear dicarboxylate-based pyridyl-appended cobalt(ii) coordination polymers in search of opto-electronic properties

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Supplementary files

Article information


Submitted
03 Feb 2020
Accepted
30 Apr 2020
First published
07 May 2020

New J. Chem., 2020,44, 9004-9009
Article type
Paper

Linear dicarboxylate-based pyridyl-appended cobalt(II) coordination polymers in search of opto-electronic properties

F. Ahmed, J. Datta, S. Khan, B. Dutta, S. Islam, S. Naaz, P. P. Ray and M. H. Mir, New J. Chem., 2020, 44, 9004
DOI: 10.1039/D0NJ00567C

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