NDLI: Controlled polymer monolayer synthesis by radical transfer to surface immobilized transfer agents

Content Provider	Royal Society of Chemistry (RSC)
Author	Price, Andrew D. Huber, Dale L.
Copyright Year	2013
Abstract	Radical chain transfer from solution-generated free radicals to thiol transfer agents bound to the surfaces of planar silicon and silica particles was investigated as a method to generate surface-bound polymer brushes. Both conventional radical and reversible addition–fragmentation chain transfer (RAFT) polymerizations created polymer films with molecular weights dependent on the details of the reaction. In the presence of high free radical concentrations or RAFT agent modifiers, the surface had minimal influence on the growth of grafted polymer chains following the initial radical transfer to the surface. Notably, excellent control of film thickness was achieved in the absence of surface-bound initiators or RAFT agents, thereby simplifying the synthesis of immobilized brush architectures. On the other hand, low concentrations of solution free radicals in conventional radical polymerization generated grafted polymers with lengths varying considerably from polymers in solution. Despite the simplicity and versatility of this technique for creating polymer-modified surfaces by surface initiated polymerization (SIP), it has been under-utilized; likely due to the absence of a framework for the rational design of the brush. The details of this investigation should allow surface modification by polymer films to become accessible to researchers without the need to create complex precursor surface chemistries.
Starting Page	1565
Ending Page	1574
Page Count	10
File Format	HTM / HTML PDF
ISSN	17599954
Volume Number	4
Issue Number	5
Journal	Polymer Chemistry
DOI	10.1039/c2py20955a
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Chain transfer Thiol Radical polymerization Free-radical halogenation Polymerization Polymer Silicon dioxide Session Initiation Protocol
Content Type	Text
Resource Type	Article
Subject	Organic Chemistry Biochemistry Bioengineering Biomedical Engineering Polymers and Plastics

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