Tuning the Charge Transport in Nickel Salicylaldimine Polymers by the Ligand Structure

Daniil A Lukyanov; Vladimir V Sizov; Alexey I Volkov; Evgenii V Beletskii; Andrey N Yankin; Elena V Alekseeva; Oleg V Levin

doi:10.3390/molecules27248798

Tuning the Charge Transport in Nickel Salicylaldimine Polymers by the Ligand Structure

Molecules. 2022 Dec 12;27(24):8798. doi: 10.3390/molecules27248798.

Authors

Daniil A Lukyanov¹, Vladimir V Sizov¹, Alexey I Volkov¹, Evgenii V Beletskii¹, Andrey N Yankin², Elena V Alekseeva¹, Oleg V Levin¹

Affiliations

¹ Institute of Chemistry, Saint Petersburg University, 199034 St. Petersburg, Russia.
² School of Physics and Engineering, ITMO University, Kronverksky Pr. 49A, 197101 St. Petersburg, Russia.

Abstract

The conductivity of the polymeric energy storage materials is the key factor limiting their performance. Conductivity of polymeric NiSalen materials, a prospective class of energy storage materials, was found to depend strongly on the length of the bridge between the nitrogen atoms of the ligand. Polymers obtained from the complexes containing C₃ alkyl and hydroxyalkyl bridges showed an electrical conductivity one order of magnitude lower than those derived from more common complexes with C₂ alkyl bridges. The observed difference was studied by means of cyclic voltammetry on interdigitated electrodes and operando spectroelectrochemistry, combined with density functional theory (DFT) calculations.

Keywords: DFT; conductive polymers; conductivity; coordination; metalorganic polymers; polaron.

Abstract

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