Back to Search Start Over

In-Situ EC-AFM Study of Electrochemical P-Doping of Polymeric Nickel(II) Complexes with Schiff base Ligands

Authors :
Evgenia Smirnova
Alexander Ankudinov
Irina Chepurnaya
Alexander Timonov
Mikhail Karushev
Source :
Inorganics, Vol 11, Iss 1, p 41 (2023)
Publication Year :
2023
Publisher :
MDPI AG, 2023.

Abstract

Conductive electrochemically active metallopolymers are outstanding materials for energy storage and conversion, electrocatalysis, electroanalysis, and other applications. The hybrid inorganic–organic nature of these materials ensures their rich chemistry and offers wide opportunities for fine-tuning their functional properties. The electrochemical modulation of the nanomechanical properties of metallopolymers is rarely investigated, and the correlations between the structure, stiffness, and capacitive properties of these materials have not yet been reported. We use electrochemical atomic force microscopy (EC-AFM) to perform in-situ quantitative nanomechanical measurements of two Schiff base metallopolymers, poly[NiSalphen] and its derivative that contains two methoxy substituents in the bridging phenylene diimine unit poly[NiSalphen(CH3O)2], during their polarization in the electrolyte solution to the undoped and fully doped states. We also get insight into the electrochemical p-doping of these polymers using electrochemical quartz crystal microgravimetry (EQCM) coupled with cyclic voltammetry (CV). Combined findings for the structurally similar polymers with different interchain interactions led us to propose a correlation between Young’s modulus of the material, its maximum doping level, and ion and solvent fluxes in the polymer films upon electrochemical oxidation.

Details

Language :
English
ISSN :
23046740
Volume :
11
Issue :
1
Database :
Directory of Open Access Journals
Journal :
Inorganics
Publication Type :
Academic Journal
Accession number :
edsdoj.85c00b266ee460484927c7956a381d4
Document Type :
article
Full Text :
https://doi.org/10.3390/inorganics11010041