A glance at violet LED sensitive photoinitiators based on the spiroxanthene scaffold

[en] A novel photoinitiator based on a spiroxanthene scaffold in the presence of an iodonium salt is proposed for the cationic ring-opening polymerization of a diepoxide, as well as for the free-radical polymerization of an acrylate upon violet LED exposure (385 and 405 nm). Good-to-excellent rates of polymerization and final conversions are obtained. These systems are characterized by a higher reactivity compared with that of anthracene/iodonium salt used as reference for cationic near UV polymerization. The addition of a poly(ionic liquid) improves the cationic polymerization profiles. The photochemical mechanisms are studied by steady-state photolysis, fluorescence, and electron spin resonance spin-trapping techniques. Molecular orbital calculations give an insight into the light absorption properties.

Research Center/Unit :

Center for Education and Research on Macromolecules (CERM)
CESAM Complex and Entangled Systems from Atoms to Materials (CESAM)

Disciplines :

Materials science & engineering
Chemistry

Author, co-author :

Mokbel, Haifaa; Institut de Science des Matériaux de Mulhouse, CNRS 7361, France > Université Libanaise, Beyrouth, Laboratoire De Matériaux, Catalyse, Environnement et Méthodes Analytiques, Liban

Poriel, Cyril; Université de Rennes, CNRS 6226, Sciences Chimiques De Rennes, MaCSE Group, France

Rault-Berthelot, Joëlle; Université de Rennes, CNRS 6226, Sciences Chimiques De Rennes, MaCSE Group, France

Dumur, Frédéric; Aix-Marseille Université, CNRS, Institut De Chimie Radicalaire, France

Gigmes, Didier; Aix-Marseille Université, CNRS, Institut De Chimie Radicalaire, France

Toufaily, Joumana; Université Libanaise, Beyrouth, Laboratoire De Matériaux, Catalyse, Environnement et Méthodes Analytiques, Liban

Hamieh, Tayssir; Université Libanaise, Beyrouth, Laboratoire De Matériaux, Catalyse, Environnement et Méthodes Analytiques, Liban

Cordella, Daniela; University of Liège - ULiège > Complex and Entangled Systems from Atoms to Materials (CESAM), Center for Education and Research on Macromolecules (CERM)

Detrembleur, Christophe ; University of Liège - ULiège > Complex and Entangled Systems from Atoms to Materials (CESAM), Center for Education and Research on Macromolecules (CERM)

Fouassier, Jean-Pierre; Institut de Science des Matériaux de Mulhouse, CNRS 7361, France

Lalevée, Jacques; Institut de Science des Matériaux de Mulhouse, CNRS 7361, France

Language :

English

Title :

A glance at violet LED sensitive photoinitiators based on the spiroxanthene scaffold

Publication date :

20 March 2016

Journal title :

Journal of Applied Polymer Science

ISSN :

0021-8995

eISSN :

1097-4628

Publisher :

Wiley, New York, United States - New York

Volume :

133

Issue :

Pages :

43213

Peer reviewed :

Peer Reviewed verified by ORBi

European Projects :

FP7 - 289347 - RENAISSANCE - TRAINING NETWORK IN INNOVATIVE POLYELECTROLYTES FOR ENERGY AND ENVIRONMENT

Funders :

F.R.S.-FNRS - Fonds de la Recherche Scientifique
BELSPO - SPP Politique scientifique - Service Public Fédéral de Programmation Politique scientifique
CE - Commission Européenne

Available on ORBi :

since 19 January 2017

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