Holder, S.J. and Achilleos, M. and Jones, R.G. (2006) Increasing molecular weight parameters of a helical polymer through polymerization in a chiral solvent. Journal of the American Chemical Society, 128 (38). pp. 12418-12419. ISSN 0002-7863. (Full text available)
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In this communication, we will demonstrate that polymerization in a chiral solvent can affect the molecular weight distribution of the product by perturbing the balance of the P and M helical screw senses of the growing chains. Specifically, for the Wurtz-type synthesis of polymethylphenylsilane (PMPS) in either (R) or (S)-limonene, the weight-average molecular weight of the products (average Mw = 80 000) was twice that of PMPS synthesized in (R/S)-limonene (average Mw = 39 200). Peturbation of the helical segmentation along the polymer chains leads to a reduction in the rate of occurrence of a key termination step. This the first time that a chiral solvent has been demonstrated to have such an effect on a polymerization process in affecting molecular weight parameters in contrast to affecting tacticity.
|Divisions:||Faculties > Science Technology and Medical Studies > School of Physical Sciences|
|Depositing User:||Simon Holder|
|Date Deposited:||08 Jun 2011 11:48|
|Last Modified:||09 Nov 2011 09:35|
|Resource URI:||http://kar.kent.ac.uk/id/eprint/27883 (The current URI for this page, for reference purposes)|
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Increasing molecular weight parameters of a helical polymer through polymerization in a chiral solvent. (deposited 22 May 2008 10:27)
- Increasing molecular weight parameters of a helical polymer through polymerization in a chiral solvent. (deposited 08 Jun 2011 11:48) [Currently Displayed]