Electrostatic layer-by-layer self-assembly of anionic squarylium and cationic polyelectrolyte

摘要

Alternating thin films of the anionic squarylium (SQ) dye and poly(diallyldimethylammonium chloride) (PDDA) were formed by the sequential deposition of SQ and PDDA from aqueous solution onto a glass substrate.UV-vis absorbance measurements reveal that the bilayer deposition process was linear and highly reproducible from layer to layer.