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Single Turnover at Molecular Polymerization Catalysts Reveals Spatiotemporally Resolved Reactions
Author(s) -
Easter Quinn T.,
Blum Suzanne A.
Publication year - 2017
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201708284
Subject(s) - ruthenium , catalysis , romp , polymerization , monomer , reactivity (psychology) , chemistry , metathesis , ring opening metathesis polymerisation , polymer , photochemistry , polymer chemistry , organic chemistry , medicine , alternative medicine , pathology
Multiple active individual molecular ruthenium catalysts have been pinpointed within growing polynorbornene, thereby revealing information on the reaction dynamics and location that is unavailable through traditional ensemble experiments. This is the first single‐turnover imaging of a molecular catalyst by fluorescence microscopy and allows detection of individual monomer reactions at an industrially important molecular ruthenium ring‐opening metathesis polymerization (ROMP) catalyst under synthetically relevant conditions (e.g. unmodified industrial catalyst, ambient pressure, condensed phase, ca. 0.03 m monomer). These results further establish the key fundamentals of this imaging technique for characterizing the reactivity and location of active molecular catalysts even when they are the minor components.