A model for defect-diffusion-controlled polymerization at a surface as typified by the alkali-metal mediated synthesis of polysilanes

McLeish, T.C.B. and Jones, Richard G. and Holder, Simon J. (2002) A model for defect-diffusion-controlled polymerization at a surface as typified by the alkali-metal mediated synthesis of polysilanes. Macromolecules, 35 (2). pp. 548-554. ISSN 0024-9297. (Full text available)

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Abstract

We describe a model for polymerization at a surface, in which local kinks within the chain, excited at the free end, may diffuse to the surface, causing termination by disengagement. A model in which kinks do not interact gives a monomodal but broad distribution when kink diffusion is slow. In a more realistic model that permits kink-antikink annihilation, some of the chains escape the kink-controlled population and produce a "living", high molecular weight fraction. A reaction for which this has been characterized is the Wurtz-type reductive coupling of organosilanes, though the phenomenon may be more general.

Item Type: Article
Additional information: 11 AMER CHEMICAL SOC
Uncontrolled keywords: POLYMERS; CHAIN
Subjects: 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: Simon Holder
Date Deposited: 08 Jun 2011 11:54
Last Modified: 22 May 2014 10:31
Resource URI: http://kar.kent.ac.uk/id/eprint/27884 (The current URI for this page, for reference purposes)

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