['Note', 'that', 'the', 'quantitative', 'introduction', 'of', 'a', 'reactive', 'functionality', 'into', 'the', 'polymer', 'chain', 'end', 'can', 'be', 'easily', 'achieved', 'by', 'adopting', 'the', 'living', 'ROMP', 'technique', 'especially', 'using', 'the', 'Schrock', 'type', 'molybdenum', 'alkylidene', 'initiator', '[', '7,12,21,61–65', ']', '.']