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Application of well-defined ruthenium alkylidenes to the ROMP of norbornene derivatives: Methoxyphenyl-substituted polynorbornene dicarboximides

Paper ID Volume ID Publish Year Pages File Format Full-Text
41737 45899 2011 5 PDF Available
Title
Application of well-defined ruthenium alkylidenes to the ROMP of norbornene derivatives: Methoxyphenyl-substituted polynorbornene dicarboximides
Abstract

The applicability of ruthenium alkylidenes as initiators in the ring opening metathesis polymerization (ROMP) of methoxyphenyl group containing norbornene derivatives has been investigated. The synthesis and polymerization of exo-N-4-methoxyphenyl-oxanorbornene-5,6-dicarboximide (MeOPhONDI) and exo-N-4-methoxyphenyl-norbornene-5,6-dicarboximide (MeOPhNDI) are reported. Polynorbornene derivatives were obtained via ROMP using first- and second-generation ruthenium alkylidene initiators. The structural properties of the polynorbornene derivatives were analyzed by NMR, DSC and GPC. Analyses of the polymer microstructures indicate that polymers contain trans stereoconfiguration of the double bonds (55–86% trans-content). The glass transition temperatures of the polymers obtained from exo-monomers are higher than 211 °C.

Graphical abstractFigure optionsDownload full-size imageDownload high-quality image (40 K)Download as PowerPoint slideResearch highlights▶ Well-defined ruthenium initiators are effective metathesis catalysts for the syntheses of PMeOPhONDI and PMeOPhNDI. ▶ Methoxy group decreases the chain mobility and increases the rotational barrier of the polymer chains. ▶ Ruthenium alkylidene catalysts produced polymers with trans configuration of the double bonds.

Keywords
Metathesis; Polynorbornene dicarboximide; ROMP; Ruthenium alkylidene; Homogeneous catalysis
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Application of well-defined ruthenium alkylidenes to the ROMP of norbornene derivatives: Methoxyphenyl-substituted polynorbornene dicarboximides
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 393, Issues 1–2, 15 February 2011, Pages 24–28
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
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Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
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