Electronic Structure and Electrooptical Properties of Radicals Formed upon Reduction of N-Alkyl 4,4′-Bipyridylium Salts
摘要:
N-Alkyl 4,4'-bipyridylium salts were synthesized and characterized. Cyclic voltammetry investigation showed that monosubstited 4,4'-bipyridylium salts are prone to reversible single-electron reduction. The formal redox potentials vs. a saturated silver chloride electrode were determined for different potential sweep rates. High-resolution ESR spectra of the radical cations formed upon the reduction of N-substituted 4,4'- bipyridylium salts in acid media were measured and interpreted. The substituent structure and the type of anion in the molecule have a considerable effect on the spin density distribution, current-voltage characteristics, and elctrooptical properties. The applicability of monosubstituted 4,4'-bipyridylium salts as photoelectrochromic compounds was studied.
ELECTROACTIVE IONIC LIQUIDS AND SURFACE-MODIFIED SUBSTRATES CONTAINING THEM
申请人:Centre National de la Recherche Scientifique
(CNRS)
公开号:EP3453038B1
公开(公告)日:2020-12-16
Electroactive Ionic Liquids And Surface-Modified Substrates Containing Them
申请人:Centre National de la Recherche Scientifique (CNRS)
公开号:US20190173078A1
公开(公告)日:2019-06-06
The present invention relates an electro-active polymeric ionic liquid including imidazolium-based molecules, said imidazolium-based molecule comprising each at least: —one imidazolium moiety associated with a negatively-charged counter-ion, and —one reducible group selected from: Formula (IV), —an anthraquinone derivative of formula (IV): with R
1
representing a hydrogen atom or a C
1
-C
6
-alkyl group, —a viologen group, and —a metallocene reducible group such as a cobaltocene group.