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

A new carbazole-functionalized norbornene derivative, 5-[methylbis( N -carbazolyl)silyl]-2-norbornene, was polymerized via living ring-opening metathesis polymerization (ROMP) with RuCl 2 ( CHPh)(PCy 3 ) 2 . The resulting polymer was of high molecular weight and had a reasonably narrow molecular weight distribution ( M n = 57 000, M w / M n = 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 CdMe 2 were observed by TEM. The UV−visible absorption spectra and fluorescence emission spectra of the polymers were similar to those of poly( N -vinylcarbazole).