Geometrically isomeric Pt(ii)/Fe(ii)-based heterometallo-supramolecular polymers with organometallic ligands for electrochromism and the electrochemical switching of Raman scattering. Issue 40 (26th September 2016)

• Record Type: Journal Article
• Authors: Chakraborty, Chanchal; Pandey, Rakesh K.; Rana, Utpal; Kanao, Miki; Moriyama, Satoshi; Higuchi, Masayoshi
• Is Part Of: Journal of materials chemistry. Volume 4:Issue 40(2016)
• Page Start: 9428
• Page End: 9437
• Publication Date: 2016-09-26
• Subjects: Materials -- Periodicals; Chemistry, Analytic -- Periodicals; Optical materials -- Research -- Periodicals; Electronics -- Materials -- Research -- Periodicals; 543.0284
• DOI: 10.1039/c6tc02929a
• Languages: English
• ISSNs: 2050-7526

Abstract

Abstract : Heterometallo-supramolecular polymers with Pt(ii ) and Fe(ii ) ions introduced alternately were prepared by the 1 : 1 complexation of Fe(ii ) ions with cis - or trans -conformational organo-Pt(ii ) ligands. 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.