Biagini, S.C.G. and Coles, M.P. and Gibson, V.C. and Giles, M.R. and Marshall, E.L. and North, M. (1998) Living ring-opening metathesis polymerisation of amino ester functionalised norbornenes. Polymer, 39 (5). pp. 1007-1014. ISSN 0032-3861.
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| Official URL http://dx.doi.org/10.1016/S0032-3861(97)00330-3 |
Abstract
The living ring-opening metathesis polymerisation of norbornene monomers bearing amino ester residues, using the molybdenum initiators Mo(=CHCMe2Ph)(=N-2,6-i-Pr2C6H3)(OR)(2), (R = CMe3, I-A, CMe2CF3, I-B, CMe(CF3)(2), I-C), is reported. The monomers are derived from reactions of exo-and endo-himic anhydrides with the amino ester hydrochlorides of glycine (1), alanine (2) and isoleucine (3). The optically pure monomers derived from 2 and 3 afford optically active polymers whose optical activities are independent of cis content and molecular weight, indicating the absence of a cooperative effect between chiral centres along the chain. The polymers derived from the exo monomers show a cis-trans vinylene dependence upon the ancillary alkoxide ligands of the initiator with I-A giving high trans contents and I-C giving high cis. The cis/trans content for the endo polymers show relatively little or no dependence upon the initiator. Poly(exo-l) is exceptional in its ability to incorporate various hydrocarbons in the solid state, including hexane and methane. (C) 1997 Elsevier Science Ltd. All rights reserved.
| Item Type: | Article |
|---|---|
| Additional information: | Times Cited: 32 |
| Subjects: | Q Science Q Science > QD Chemistry |
| Divisions: | Faculties > Science Technology and Medical Studies > School of Physical Sciences > Functional Materials Group Faculties > Science Technology and Medical Studies > School of Physical Sciences |
| Depositing User: | Stefano C G Biagini |
| Date Deposited: | 25 Jun 2009 14:23 |
| Last Modified: | 25 Jun 2009 14:23 |
| Resource URI: | http://kar.kent.ac.uk/id/eprint/13236 (The current URI for this page, for reference purposes) |
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