Novel Highly Efficient Organophotocatalysts: Truxene–Acridine‐1, 8‐diones as Photoinitiators of Polymerization. Issue 19 (9th August 2013)

• Record Type: Journal Article
• Authors: Tehfe, Mohamad‐Ali; Dumur, Frédéric; Contal, Emmanuel; Graff, Bernadette; Gigmes, Didier; Fouassier, Jean‐Pierre; Lalevée, Jacques
• Is Part Of: Macromolecular chemistry and physics. Volume 214:Issue 19(2013:Oct.)
• Page Start: 2189
• Page End: 2201
• Publication Date: 2013-08-09
• Subjects: Polymers -- Periodicals; Polymerization -- Periodicals; Synthetic products -- Periodicals; Macromolecules -- Periodicals; 547.7
• DOI: 10.1002/macp.201300362
• Languages: English
• ISSNs: 1022-1352

Abstract

<abstract abstract-type="main" xml:lang="en"> <title> <x xml:space="preserve">Abstract</x> </title> <p>Truxene–acridine‐1, 8‐dione derivatives (<bold>Tr_AD</bold>) are proposed as new photoinitiators of polymerization under very soft irradiation (by a household halogen lamp), as well as laser‐diode exposure at 405 nm. They exhibit a strong absorption around 380 nm. The <bold>Tr_AD</bold>/diphenyl iodonium salt/9‐vinylcarbazole combination is able to promote the ring‐opening polymerization of an epoxide, whereas the <bold>Tr_AD</bold>/alkyl halide/amine system is very efficient in initiating the radical photopolymerization of an acrylate. Excellent polymerization profiles are obtained. Acrylate/epoxide blends are also easily polymerized. These <bold>Tr_ADs</bold> in the three‐component systems behave as photocatalysts according to oxidative cycles. The mechanisms are discussed for the different multicomponent initiating systems. <boxed-text content-type="graphic" position="anchor" orientation="portrait"><graphic position="anchor" mimetype="image" xlink:href="ark:/27927/pgg3jz7762d" orientation="portrait" xlink:type="simple" xmlns:xlink="http://www.w3.org/1999/xlink" /></boxed-text></p> </abstract>