Synthesis of Well‐Defined Rod‐Coil‐Rod Polyhexylisocyanate‐<i>block</i>‐polystyrene‐<i>block</i>‐polyhexylisocyanate via One‐Pot Anionic Polymerization

Abstract

Abstract A rod‐coil‐rod block copolymer, polyhexylisocyanate‐ block ‐polystyrene‐ block ‐polyhexylisocyanate, of controlled molecular weight was synthesized quantitatively via living anionic polymerization using potassium naphthalenide in the presence of sodium tetraphenylborate. The use of K + as the counterion for the polymerization of styrene, and Na + (NaBPh 4 ) for the polymerization of isocyanate leads to the formation of a well‐controlled novel triblock copolymer. magnified image