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Issue 40, 2016
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Geometrically isomeric Pt(ii)/Fe(ii)-based heterometallo-supramolecular polymers with organometallic ligands for electrochromism and the electrochemical switching of Raman scattering

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Abstract

Heterometallo-supramolecular polymers with Pt(II) and Fe(II) ions introduced alternately (cis-polyPtFe and trans-polyPtFe) in a precise way were prepared successfully by the 1 : 1 complexation of Fe(II) ions with cis- or trans-conformational organo-Pt(II) ligands. The conformational difference between cis- and trans-greatly changed the morphology, crystallinity, ionic conductivity, electrochromic properties, and redox-triggered fluorescence of the polymers. The cis-polyPtFe exhibited better crystallinity and low ionic conductivity, whereas trans-polyPtFe showed an amorphous nature with high ionic conductivity. Both the polymers exhibited reversible electrochromism between purple and yellow colors due to the redox of Fe(II)/(III) upon applying a potential of 0 V or +3 V. The trans-polyPtFe showed better electrochromic stability and response times compared to cis-polyPtFe. In addition, the trans-polyPtFe also showed an improved response in redox-triggered Raman scattering switching compared to cis-polyPtFe over a long time range.

Graphical abstract: Geometrically isomeric Pt(ii)/Fe(ii)-based heterometallo-supramolecular polymers with organometallic ligands for electrochromism and the electrochemical switching of Raman scattering

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Article information


Submitted
12 Jul 2016
Accepted
12 Sep 2016
First published
12 Sep 2016

This article is Open Access

J. Mater. Chem. C, 2016,4, 9428-9437
Article type
Paper

Geometrically isomeric Pt(II)/Fe(II)-based heterometallo-supramolecular polymers with organometallic ligands for electrochromism and the electrochemical switching of Raman scattering

C. Chakraborty, R. K. Pandey, U. Rana, M. Kanao, S. Moriyama and M. Higuchi, J. Mater. Chem. C, 2016, 4, 9428
DOI: 10.1039/C6TC02929A

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