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NMR Characterization of Carbazole-Substituted Norbornene Comonomer 9-(Bicyclo[2.2.1.]hept-5-en-2-ylmethyl)-9H-carbazole (BHMCZ) and Poly(ethylene-co-BHMCZ) Copolymer by Ilpo Mustonen; Terttu Hukka; Tuula T. Pakkanen is a Materials Science article available to read on EtoBox.

What is NMR Characterization of Carbazole-Substituted Norbornene Comonomer 9-(Bicyclo[2.2.1.]hept-5-en-2-ylmethyl)-9H-carbazole (BHMCZ) and Poly(ethylene-co-BHMCZ) Copolymer about?

## Abstract Carbazole‐substituted norbornene comonomer 9‐(bicyclo[2.2.1.]hept‐5‐en‐2‐ylmethyl)‐9__H__‐carbazole (BHMCZ) can be copolymerized with ethylene using the [Ph~2~C(Ind)(Cp)ZrCl~2~] catalyst and methylaluminoxane (MAO) cocatalyst system. The microstructures of BHMCZ comonomer and of ethylene–BHMCZ copolymer containing 4.6 mol‐% BHMCZ units in the chain were characterized by one‐dimensional ^13^C DEPT and two‐dimensional homonuclear ^1^H‐^1^H COSY and heteronuclear ^1^H‐^13^C HXCO NMR spectroscopy. The BHMCZ comonomer appears as __endo__ and __exo__ stereoisomers, which were identified on the basis of chemical shifts, signal multiplicities, and coupling in the 2D NMR spectra. The NMR information on the BHMCZ isomers was used to assist in the determination of the chemical shifts and microstructure of ethylene–BHMCZ copolymer. The NMR analysis of ethylene–BHMCZ copolymer indicated that __exo__‐BHMCZ polymerizes with ethylene slightly more readily than does __endo__‐BHMCZ under the polymerization conditions employed. Isolated segments of __exo__(2)‐__exo__(5)‐__exo__(6) and __endo__(2)‐__exo__(5)‐__exo__(6) ethylene‐BHMCZ copolymer showing carbon atom numbering. imageIsolated s

Who reads NMR Characterization of Carbazole-Substituted Norbornene Comonomer 9-(Bicyclo[2.2.1.]hept-5-en-2-ylmethyl)-9H-carbazole (BHMCZ) and Poly(ethylene-co-BHMCZ) Copolymer?

Author

Ilpo Mustonen; Terttu Hukka; Tuula T. Pakkanen

Publisher

John Wiley and Sons; Wiley (John Wiley & Sons); John Wiley & Sons Ltd.; Wiley (ISSN 1022-1352)

Published

2003

Language

EN

Field

Materials Science (Physical Sciences)