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Dual-pathway chain-end modification of RAFT polymers using visible light and metal-free conditions.


ABSTRACT: We report a metal-free strategy for the chain-end modification of RAFT polymers utilizing visible light. By turning the light source on or off, the reaction pathway in one pot can be switched between either complete desulfurization (hydrogen chain-end) or simple cleavage (thiol chain-end), respectively. The versatility of this process is exemplified by application to a wide range of polymer backbones under mild, quantitative conditions using commercial reagents.

SUBMITTER: Discekici EH 

PROVIDER: S-EPMC5313033 | biostudies-literature | 2017 Feb

REPOSITORIES: biostudies-literature

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Dual-pathway chain-end modification of RAFT polymers using visible light and metal-free conditions.

Discekici Emre H EH   Shankel Shelby L SL   Anastasaki Athina A   Oschmann Bernd B   Lee In-Hwan IH   Niu Jia J   McGrath Alaina J AJ   Clark Paul G PG   Laitar David S DS   de Alaniz Javier Read JR   Hawker Craig J CJ   Lunn David J DJ  

Chemical communications (Cambridge, England) 20170201 11


We report a metal-free strategy for the chain-end modification of RAFT polymers utilizing visible light. By turning the light source on or off, the reaction pathway in one pot can be switched between either complete desulfurization (hydrogen chain-end) or simple cleavage (thiol chain-end), respectively. The versatility of this process is exemplified by application to a wide range of polymer backbones under mild, quantitative conditions using commercial reagents. ...[more]

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