Synthesis of Block Copolymers Containing Pendant Carbazole Groups via Living Ring-Opening Metathesis Polymerization

Abstract

A new carbazole-functionalized norbornene derivative, 5-[methylbis(N-carbazolyl)silyl]-2-norbornene, was polymerized via living ring-opening metathesis polymerization (ROMP) with RuCl2(CHPh)(PCy3)2. The resulting polymer was of high molecular weight and had a reasonably narrow molecular weight distribution (Mn = 57 000, Mw/Mn = 1.26). Block copolymers of the carbazole-functionalized monomer and a TMS-protected alcohol-functionalized norbornene derivative were also prepared using ROMP techniques. Microphase separation and selective reaction of the alcohol-functionalized domains with CdMe2 were observed by TEM. The UV−visible absorption spectra and fluorescence emission spectra of the polymers were similar to those of poly(N-vinylcarbazole).