ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

Electrochemical properties of polyoxometalate composite materials containing multiple redox centers

LaSalle Swenson and M. Ishaque Khan

Illinois Institute of Technology, Chicago, USA

E-mail: khan@iit.edu

Abstract: We used cyclic voltammetry (CV) to study the electrochemical redox properties of a series of solid-state polyoxometalate composite hybrid materials supported on indium tin oxide-coated glass. The hybrid materials are composed of the organofunctionalized polyoxocationic species, ([{ ext{NaV}}^{ ext{IV}}_{6} { ext{O}}_{ 6}){(OCH₂CH₂)₂N(CH₂CH₂OH)}₆]⁺, in combination with the Keggin-structure polyoxoanions (PW₁₂O₄₀)³⁻, (SiW₁₂O₄₀)⁴⁻, or (SiMo₁₂O₄₀)⁴⁻. CV results show that the hybrid materials are electrochemically active, with redox events attributable to their electrochemically active molecular constituents. Strong chemical–environmental effects are also observed.

Keywords: Polyoxometalates ; Organofunctionalized Anderson structure ; Cyclic voltammetry ; Redox properties ; Composites 

Full paper is available at www.springerlink.com.

DOI: 10.1007/s11696-019-00815-9

Chemical Papers 73 (10) 2611–2617 (2019)