Synthesis and electrochemical behaviour of rigid ferrocenyl-terminated pyridylphenylene dendrimers. (31st May 2019)

• Record Type: Journal Article
• Authors: Serkova, Elena S.; Chamkin, Aleksandr A.; Boldyrev, Konstantin L.; Novikov, Valentin V.; Peregudov, Alexander S.; Shifrina, Zinaida B.
• Is Part Of: Polymer. Volume 173(2019)
• Page Start: 34
• Page End: 42
• Publication Date: 2019-05-31
• Subjects: Ferrocenyl dendrimer -- Pyridylphenylene dendrimer -- Cyclic voltammetry; Fc ferrocenyl fragment (C5H5)Fe(C5H4) -- TEA triethylamine -- ATP adenosine triphosphate -- GC glassy carbon -- DMF dimethylformamide -- THF tetrahydrofuran -- MALDI-TOF matrix-assisted laser desorption/ionization time-of-flight; Polymers -- Periodicals; Polymerization -- Periodicals; Polymères -- Périodiques; Polymérisation -- Périodiques; 547.7
• DOI: 10.1016/j.polymer.2019.04.026
• Languages: English
• ISSNs: 0032-3861

Abstract

Abstract: The synthesis of ferrocenyl-terminated pyridylphenylene dendrimers based on trifunctional core via the Diels-Alder cycloaddition of ferrocenyl-containing cyclopentadienone and ethynyl terminated phenylene derivatives is presented. Dendrimers of two generations were synthesized and characterized using NMR, MALDI-TOF spectrometry and GPC. Cyclic voltammetry (CV) of the dendrimers shows single quasi-reversible wave. The strong adsorption occurs onto Pt and GC electrodes during CV in CH2 Cl2, which is reflected by the high ipc /ipa ratio. Thus, a fabrication of modified Pt electrode with a ferrocenyl dendrimer is proved to be possible. The resulting electrode is stable towards CH2 Cl2 washing and multiple CV scanning. The CV of the modified electrode shows an almost symmetrical response, which is typical for surface immobilized redox-active materials. Highlights: Synthesis of novel ferrocenyl-terminated pyridylphenylene dendrimers is presented. The cyclic voltammetry of dendrimers shows single quasi-reversible wave. The strong adsoprtion of the dendrimers occurs onto electrodes during voltammetry. The perfectly stable dendrimer-coated Pt electrode was fabricated.