Julie Kirschner

Institut de Science des Matériaux de Mulhouse

Many academic and industrial works have been carried out for the search of new classes of visible light photoinitiators (PI). This last decade, new Type I photoinitiator generating silyl, germyl or stannyl radicals were elegantly reported; the chemical mechanisms being often associated with the cleavage of the C( = O)‐Si, C( = O)‐Ge or C( = O)‐Sn b...

A new phosphine is proposed as efficient coinitiator for camphorquinone (CQ)‐based photoinitiating systems for the free radical polymerization of (meth)acrylates. Remarkably, this new co‐initiator can exhibit two functionalities: a phosphine moiety to overcome oxygen inhibition and an iodonium salt moiety as counter cation to initiate the polymeriz...

2‐Oxo‐2‐(tert‐butyldimethylsilyl)acetic acid (DKSi‐COOH), is proposed here as a new high‐performance photoinitiator (PI) for the free radical polymerization of methacrylates under blue light irradiation. In the presence of DKSi‐COOH, very good polymerization performances are reached and outstanding bleaching properties are obtained compared to trad...

Objective: The aim of our study is to develop amine-free photoinitiating systems (PISs) for the polymerization of representative dental methacrylate resins under blue light irradiation. PISs based on camphorquinone (CQ)/sulfinate and CQ/sulfonate, eventually in combination with an iodonium salt, are proposed and compared to the well-established CQ...

Actuellement, de nombreux domaines académiques et industriels s’intéressent à la polymérisation par voie photochimique pour ses nombreux avantages comparés à son analogue thermique. En effet, la polymérisation par voie photochimique est plus écologique et implique moins d’énergie que son analogue thermique. Egalement, les photopolymères sont généra...

1‐Aryl‐2‐(triisopropylsilyl)ethane‐1,2‐diones (SEDs) are proposed here as a new class of visible Type I photoinitiators (PIs) for free radical polymerization under air upon exposure to blue (@455 nm) and green (@520 nm) LEDs. Remarkably, these new systems present good polymerization performances and excellent bleaching properties compared to campho...

Diaryliodonium salts are well-established compounds in free radical chemistry and are already used as photoinitiators (free radical or cationic polymerization), but the presence of counter anions is a strong drawback. Indeed, a counter anion is always required (e.g., SbF6−) leading to potential toxicity issues or release of HF. In the present paper...

Iodonium sulfonates are proposed here as a new class of high‐performance coinitiators for camphorquinone (CQ)‐based systems for the polymerization of methacrylates under blue light irradiation. When combined with CQ, the new proposed coinitiators present excellent polymerization performances and are excellent candidates for the replacement of terti...

The present invention relates to a dental impression material adapted to be cured by visible light, comprising a compound having one or more aliphatic unsaturated groups, a compound containing at least one silicone-bonded hydrogen atom and not having more than three hydrogen atoms attached to any one silicone atom, a photoactivatable catalyst compo...

The present invention relates to a photocurable dental composition comprising a specific polymerization initiator system containing the combination of a photoinitiator compound and a coinitiator compound being a sulfinate compound or a sulfonate compound. The present invention also relates to the use of this polymerization initiator system in a pho...

Silyl glyoxylates are proposed here as a new class of high performance type I photoinitiators for free radical polymerization under air or in laminate (e.g., (meth)acrylates) upon exposure to different near-UV (at 395 nm; at 405 nm) and blue (at 477 nm) LEDs. The new proposed photoinitiators can also be used in the presence of additives that can en...