Electrochemiluminescence of [Ru(bpy)3]2+/tri-n-propylamine to visualize different lipid compositions in supported lipid membranes

Abstract

We report the direct imaging of supported lipid membranes using electrochemiluminescence (ECL) of [Ru(bpy)₃]²⁺ and tri-n-propylamine (TPrA). Lipid membranes with different compositions exhibited inherent ECL emissions due to electrostatic interactions and altered permeability of the luminophores, demonstrating the promising use of ECL microscopy for lipid membrane studies.