| 초록 |
Controlling the radical polymerization via a redox-active metal such as copper is now a well-established method of reversible deactivation radical polymerization (RDRP) and the strategy is called atom transfer radical polymerization (ATRP). Recently, it was demonstrated that ATRP can be mediated by visible light if an optimal dye is employed in the absence of copper catalyst. Since then, the light-mediated ATRP has drawn much attention because it can expand the scope of ATRP providing spatial and temporal control over reaction kinetics. However, finding an optimal photocatalyst for the light-mediated ATRP is not trivial because the system requires the analysis of the resulting polymers which is an ensemble of non-identical molecules. Instead, we have screened several photocatalysts and investigated their efficiencies in the light-mediated atom transfer cyclization (ATRC) of a model compound, N-allyl-α-halogenated-acetamide, to find an optimal photocatalyst for light-mediated ATRP. |
