A delocalized cobaltoviologen with seven reversibly accessible redox states and highly tunable electrochromic behaviour

Iram F Mansoor; Derek I Wozniak; Yilei Wu; Mark C Lipke

doi:10.1039/d0cc05627h

A delocalized cobaltoviologen with seven reversibly accessible redox states and highly tunable electrochromic behaviour

Chem Commun (Camb). 2020 Nov 18;56(89):13864-13867. doi: 10.1039/d0cc05627h. Epub 2020 Oct 22.

Authors

Iram F Mansoor¹, Derek I Wozniak¹, Yilei Wu², Mark C Lipke¹

Affiliations

¹ Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, 123 Bevier Road, Piscataway, New Jersey 08854, USA. ml1353@chem.rutgers.edu.
² Department of Chemical Engineering, Stanford University, Stanford, California 94305-4125, USA.

PMID: 33089836
DOI: 10.1039/d0cc05627h

Abstract

Co^II mediates electronic coupling between two N-Me-pyridinium-terpyridine ligands that are related to redox-active N,N-dialkyl-4,4'-bipyridinium dications (viologens). Borderline Class II/III electronic delocalization imparts the cobaltoviologen complex with distinct electronic properties (e.g., 7 accessible redox states) relative to those of viologens, leading to enhanced electrochromism.