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Issue 11, 2016
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Benzoylformamides as versatile photocaged bases for redox free radical photopolymerization

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Abstract

Benzoylformamides (BFAs) are proposed as photocaged bases for redox free radical photopolymerization (FRP). Initially the dissolving capacity of BFAs was evaluated. Besides our previously reported photo-latent anion polymerization, BFAs, as versatile photocaged bases, can not only initiate the FRP of acrylates unassisted, but also perform redox FRP in combination with a benzoyl peroxide initiator. We detail a model photopolymerization in the presence of BFA-dBA (N,N-dibenzyl-2-oxo-2-phenylacetamide) as the photocaged base. In combination with a benzoyl peroxide initiator, BFAs are able to initiate the amine-mediated redox photopolymerization of acrylates, and enhance the photopolymerization rate. Finally, we investigated the mechanism of the radical formation to initiate the redox FRP, as exemplified by BFA-dBA.

Graphical abstract: Benzoylformamides as versatile photocaged bases for redox free radical photopolymerization

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Publication details

The article was received on 17 Aug 2016, accepted on 10 Oct 2016 and first published on 11 Oct 2016


Article type: Paper
DOI: 10.1039/C6PP00301J
Citation: Photochem. Photobiol. Sci., 2016,15, 1442-1447
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    Benzoylformamides as versatile photocaged bases for redox free radical photopolymerization

    R. Xu, M. He and J. Yang, Photochem. Photobiol. Sci., 2016, 15, 1442
    DOI: 10.1039/C6PP00301J

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