Preparation of Stilbene-Eighteen Alkyl Quaternary Ammonium Salts as Fluorescent Brightening Materials and Surfactants

Abstract

Three stilbene-eighteen alkyl quaternary ammonium salts were synthesized through three-step reactions. The physical properties of compounds were characterized by UV and fluorescence emission spectra. The new compounds were applied to cotton fiber as fluorescent brightening agents and their performances were evaluated by measuring the degree of whiteness. The surface tension (γ) and the Critical Micelle Concentration (CMC) of compounds were evaluated. The results showed that the three compounds could greatly reduce the surface tension of aqueous solutions.

Synthesis and Application of a Multifunctional Fluorescent Polymer Based on Coumarin

“…In this paper, a novel multifunctional fluorescent polymer based on coumarin (MFPC) was synthesized by copolymerization, containing CFM, UVAM, DMC, and AM monomers. As a cationic monomer, DMC can provide improvements in adhesion on the surface of paper on account of its high polarity and AM plays an important role in the copolymerization as a bridge (Linhart et al 2005;Cao et al 2006;Wang et al 2013aWang et al ,b, 2014a, which make the water-insoluble coumarin fluorescent monomer turn into a multifunctional polymer with water-soluble and adhesive properties. Also, its multifunctional properties on paper were evaluated as a light stabilizer, fluorescent brightener, and surface sizing agent.…”