Highly Defined ABC Triblock Cooligomers and Copolymers Prepared by ROMP Using an N-Heterocyclic-Carbene-Substituted Ruthenium Benzylidene Initiator

• Published in: Macromolecular rapid communications. Vol. 24; no. 7; pp. 435 - 439
• Main Authors: Slugovc, Christian, Riegler, Silvia, Hayn, Gertraud, Saf, Robert, Stelzer, Franz
• Format: Journal Article
• Language: English
• Published: Weinheim WILEY-VCH Verlag 07.05.2003; WILEY‐VCH Verlag; Wiley
• Subjects: Applied sciences; block copolymers; Copolymerization; Exact sciences and technology; living polymerization; MALDI; Organic polymers; Physicochemistry of polymers; Preparation, kinetics, thermodynamics, mechanism and catalysts; ROMP; Terpolymer; Norbornene derivative copolymer; Living polymer; Complex catalyst; Experimental study; Complex catalyst copolymerization; Functional polymer; Carbene; Triblock copolymer; Metathesis polymerization; Preparation; Unsaturated copolymer; Chloro complex; Catalyst activity; Ring opening copolymerization; Ruthenium complex
• ISSN: 1022-1336; 1521-3927
• DOI: 10.1002/marc.200390062

The “3rd generation Grubbs” initiator (H2IMes)(3‐bromopyridine)2(Cl)2RuCHPh (1) accomplishes the synthesis of ABC triblock copolymers via living ring‐opening metathesis polymerisation (ROMP) of norbornene derivatives. Complete initiation and an outstanding tolerance of functional groups are provided, which is proven by a combined study by means of matrix‐assisted laser desorption/ionisation mass spectrometry, gel permeation chromatography and NMR spectroscopy on an ABC triblock cooligomer. Gel permeation chromatograms of oligoA, oligoAB, and oligoABC.