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Synthesis and characterization of new diblock copolymers of 5-(N-carbazolyl methyl)bicyclo[2.2.1]hept-2-ene and 1,5-cyclooctadiene using ring opening metathesis polymerization (ROMP)

✍ Scribed by Der-Jang Liaw; Pi-Ling Wu


Publisher
Elsevier Science
Year
2000
Tongue
English
Weight
167 KB
Volume
160
Category
Article
ISSN
1381-1169

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13C NMR spectra of the three title polymers have been determined for polymers of different tacticities. Assignments to the various possible HWHT/TT and m/r dyad structures were made. These were facilitated by the use of optically active monomers in the case of 1 and 3. In the precursor polymers the

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## Abstract The title monomers 1 and 2 were polymerized by Ru‐, Ir‐, Mo‐, W‐ and Re‐based metathesis catalysts to yield polymers with __cis__ contents ranging from 10% to at least 90% for 1 and 23–60% for 2. Assignments of the ^13^C NMR spectra were made. No significant head‐tail bias was observed