Increasing the Alkaline Stability of <i>N</i>,<i>N</i>-Diaryl Carbazolium Salts Using Substituent Electronic Effects
Nansi Gjineci, Sinai Aharonovich, Dario R. Dekel, Charles E. Diesendruck
Abstract
-diaryl carbazolium salts decompose through a single-electron-transfer mechanism, the change in carbazolium electron density leads to a very significant impact on their chemical stability. Substituents with very negative Hammett parameters demonstrate unparalleled stability toward dry hydroxide. This study provides guidelines for a different approach to develop stable quaternary ammonium salts for AEMFCs, making use of the unique parameters of this decomposition mechanism.
Topics & Concepts
Cationic polymerizationSubstituentHydroxideAmmonium hydroxideDecompositionChemical stabilityMaterials scienceMembraneIonAmmoniumElectronic effectIon exchangeCatalysisInorganic chemistryChemistryOrganic chemistryPolymer chemistryBiochemistryFuel Cells and Related MaterialsElectrocatalysts for Energy ConversionAdvanced battery technologies research