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Synthesis and Characterization of Well-Defined Mid-Chain Functional Macrophotoinitiators of Polystyrene by Combination of ATRP and “Click” Chemistry

✍ Scribed by Mustafa Degirmenci; Selma Alter; Nasrettin Genli

Publisher
John Wiley and Sons
Year
2011
Tongue
English
Weight
539 KB
Volume
212
Category
Article
ISSN
1022-1352

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✦ Synopsis

Abstract

A combination of ATRP and “click” chemistry is employed for efficient preparation of a novel well‐defined mid‐chain functional macrophotoinitiator of polystyrene. Bromo‐terminated polystyrene (PSt‐Br) is prepared by ATRP of styrene using a methyl‐2‐bromopropanoate initiator with CuBr/PMDETA. Subsequently, PSt‐Br is converted to PSt‐N~3~ by a simple nucleophilic substitution reaction. A dialkyne‐functionalized photoinitiator (alkyne‐PI‐alkyne) is synthesized using a dihydroxy‐functional photoinitiator and propargyl bromide. Then the “click” reaction between PSt‐N~3~ and alkyne‐PI‐alkyne is performed by Cu(I) catalysis. Spectroscopic studies reveal that low‐polydispersity polystyrene with the desired photoinitiator functionality in the middle of the chain (PSt‐PI‐PSt) is obtained. magnified image

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