2021
DOI: 10.1002/9783527821297
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Photoinitiators

Jean‐Pierre Fouassier1,
Jacques Lalevée2
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Cited by 42 publications

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“…A great enhancement was also seen in the thick sample of compound ( 13 ) where the final acrylate conversion reached 80% plus EDB, a result that shows that this compound is also very effective in a photo-reduction process to initiate free radical polymerizations (see eqn (r2) below). From the above results, it can easily be understood that these naphthoquinone-based derivatives can work efficiently according to the reactions (r1)–(r3) where EDB˙ (–H) and Ar˙ are considered the main initiating species: 3 PI ( hν ) → *PI → R˙ 1 PI + EDB → PI˙ − + EDB˙ + → PI˙-H + EDB˙ (–H) 1 PI + Ar 2 I + → PI˙ + + Ar˙ + ArI…”
Section: Resultsmentioning
confidence: 96%
Exaggerated anticipatory anxiety is common in social anxiety disorder (SAD). Neuroimaging studies have revealed altered neural activity in response to social stimuli in SAD, but fewer studies have examined neural activity during anticipation of feared social stimuli in SAD. The current study examined the time course and magnitude of activity in threat processing brain regions during speech anticipation in socially anxious individuals and healthy controls (HC). Method Participants (SAD n = 58; HC n = 16) underwent functional magnetic resonance imaging (fMRI) during which they completed a 90s control anticipation task and 90s speech anticipation task.
“…A great enhancement was also seen in the thick sample of compound ( 13 ) where the final acrylate conversion reached 80% plus EDB, a result that shows that this compound is also very effective in a photo-reduction process to initiate free radical polymerizations (see eqn (r2) below). From the above results, it can easily be understood that these naphthoquinone-based derivatives can work efficiently according to the reactions (r1)–(r3) where EDB˙ (–H) and Ar˙ are considered the main initiating species: 3 PI ( hν ) → *PI → R˙ 1 PI + EDB → PI˙ − + EDB˙ + → PI˙-H + EDB˙ (–H) 1 PI + Ar 2 I + → PI˙ + + Ar˙ + ArI…”
Section: Resultsmentioning
confidence: 96%
Exaggerated anticipatory anxiety is common in social anxiety disorder (SAD). Neuroimaging studies have revealed altered neural activity in response to social stimuli in SAD, but fewer studies have examined neural activity during anticipation of feared social stimuli in SAD. The current study examined the time course and magnitude of activity in threat processing brain regions during speech anticipation in socially anxious individuals and healthy controls (HC). Method Participants (SAD n = 58; HC n = 16) underwent functional magnetic resonance imaging (fMRI) during which they completed a 90s control anticipation task and 90s speech anticipation task.
“…The Trends Sci. 2024; 21 (12): 8603 6 of 15 unpolymerized composite resin was placed into a silicone mold (10×2×2 mm 3 ) and cured on both sides for 20 s using a UV lamp. Post-polymerization, the specimen dimensions (n = 10) were measured with a digital caliper accurate to 0.01 mm.…”
Section: Methodsmentioning
confidence: 99%
Exaggerated anticipatory anxiety is common in social anxiety disorder (SAD). Neuroimaging studies have revealed altered neural activity in response to social stimuli in SAD, but fewer studies have examined neural activity during anticipation of feared social stimuli in SAD. The current study examined the time course and magnitude of activity in threat processing brain regions during speech anticipation in socially anxious individuals and healthy controls (HC). Method Participants (SAD n = 58; HC n = 16) underwent functional magnetic resonance imaging (fMRI) during which they completed a 90s control anticipation task and 90s speech anticipation task.
“…72,73 Photo-responsive molecules that are excited to the photo energy are photo-initiators, which generate radicals or photoacids to initiate the polymerization of monomers such as acrylates or epoxides. 74 Upon light exposure, radical initiators such as Darocur 1173 are used to initiate the free-radical polymerization of vinyl monomers, such as acrylates and methacrylates. These photoinitiators absorb light and generate reactive radical species either via homolytic bond cleavage (Type I) or through interaction with a co-initiator (Type II), which then react with the carbon–carbon double bonds of monomers to produce new chain-end radicals.…”
Section: Laser As Energy Sourcesmentioning
confidence: 99%
Exaggerated anticipatory anxiety is common in social anxiety disorder (SAD). Neuroimaging studies have revealed altered neural activity in response to social stimuli in SAD, but fewer studies have examined neural activity during anticipation of feared social stimuli in SAD. The current study examined the time course and magnitude of activity in threat processing brain regions during speech anticipation in socially anxious individuals and healthy controls (HC). Method Participants (SAD n = 58; HC n = 16) underwent functional magnetic resonance imaging (fMRI) during which they completed a 90s control anticipation task and 90s speech anticipation task.
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