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Polymers 2012, 4(2), 1183-1194; doi:10.3390/polym4021183
Article

Synthesis of Star Poly(N-vinylcarbazole) by Microwave-Assisted Reversible Addition-Fragmentation Chain Transfer Polymerization (RAFT)

*  and
“P. Poni” Institute of Macromolecular Chemistry, Electroactive Polymers Department, 41A Gr. Ghica Voda alley, Iasi-700487, Romania
* Author to whom correspondence should be addressed.
Received: 27 February 2012 / Revised: 12 April 2012 / Accepted: 4 May 2012 / Published: 15 May 2012
(This article belongs to the Special Issue Living Polymerization Techniques)
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Abstract

Controlled radical polymerization of N-vinylcarbazole (NVK) via microwave-assisted reversible addition-fragmentation chain transfer (RAFT) polymerization is described. As chain transfer agent, 1,3,5-benzyl tri (diethyldithiocarbamate), was used. The chain transfer agent, containing a 1.3.5-trisubstituted benzene ring as core and three dithiocarbamate functionalities attached through an intermediate for fragmenting covalent bonds, led to poly(N-vinylcarbazole) (PVK) with star architecture. Polymerizations were carried out in 1,4-dioxane as solvent, at 70 °C, and studied for different polymerization times and monomer/CTA/initiator ratios. The SEC molecular weight curves exhibit a trimodal distribution, assigned to the linear and star-star coupling polymers, accompanying the real star polymer (as main product).
Keywords: N-vinylcarbazole; RAFT polymerization; three-functional dithiocarbamate chain transfer agent; microwave-assisted polymerization; star polymers N-vinylcarbazole; RAFT polymerization; three-functional dithiocarbamate chain transfer agent; microwave-assisted polymerization; star polymers
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).
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Grigoras, M.; Negru, O.-I. Synthesis of Star Poly(N-vinylcarbazole) by Microwave-Assisted Reversible Addition-Fragmentation Chain Transfer Polymerization (RAFT). Polymers 2012, 4, 1183-1194.

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