Synthesis of nanometer‐size silver coated polymerized diacetylene composite particles

We report the synthesis of stable nanometer‐size silver‐coated polydiacetylene (PDA) particles. At first, an ethanol solution of diacetylene (DA) is dispersed into a Ag+ ion containing aqueous solution. Silver ions are attracted to –CCO− anions of DA, then monomer DA vesicles coated by silver ions are formed by a long‐term ultrasonication treatment. The monomer DA vesicles are photopolymerized and the silver ions are photo‐reduced simultaneously to form coated composite particles.