Synthesis of highly photostable blue-emitting 1,8-naphthalimides and their acrylonitrile copolymers

Bojinov, Vladimir B.; Simeonov, Danail B.

doi:10.1016/j.polymdegradstab.2009.10.012

Cited by 24 publications

(12 citation statements)

References 45 publications

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“…The search for new Type I or Type II PIs is currently the subject of many research works (e.g., for examples, see in [44,45,46,47,48,49,50,51,52,53,54,55,56]) through: (i) the design of new structures and (ii) the modification of existing structures. As recalled above, the amount of light absorbed by the ACs and the photochemical/chemical reactivity of ACs constitute the key points for the design of high performance PI systems [2].…”

Section: Resultsmentioning

confidence: 99%

Photochemistry and Radical Chemistry under Low Intensity Visible Light Sources: Application to Photopolymerization Reactions

et al. 2014

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Abstract:The search for radical initiators able to work under soft conditions is a great challenge, driven by the fact that the use of safe and cheap light sources is very attractive. In the present paper, a review of some recently reported photoinitiating systems for polymerization under soft conditions is provided. Different approaches based on multi-component systems (e.g., photoredox catalysis) or light harvesting photoinitiators are described and discussed. The chemical mechanisms associated with the production of free radicals usable as initiating species or mediators of cations are reported.

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Section: Resultsmentioning

confidence: 99%

Photochemistry and Radical Chemistry under Low Intensity Visible Light Sources: Application to Photopolymerization Reactions

et al. 2014

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“…In particular, ferrocenium salt derivatives possessing various ligands (allowing suitable visible light absorptions) and different nucleophilic anions are efficient (see examples in Refs. ).…”

Section: Introductionmentioning

confidence: 97%

“…The design and development of novel high‐performance cationic PIs directly adapted to light‐emitting diodes (LEDs) as irradiation devices (especially near UV and visible LEDs) are still a challenge and clearly attract a great attention in the photopolymerization field . In the present paper, we focus on a study of two coumarin‐based iodonium salts.…”

Section: Introductionmentioning

confidence: 99%

Specific cationic photoinitiators for near UV and visible LEDs: Iodonium versus ferrocenium structures

Mokbel

Toufaily

Hamieh

et al. 2015

J of Applied Polymer Sci

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Two iodonium salts based on a coumarin chromophore are investigated for polymerization upon light emitting diode irradiations (LEDs). They work as one-component photoinitiators. They initiate the cationic polymerization of epoxides (under air) and vinylethers (laminate) upon exposure to violet LEDs (385 and 405 nm). Excellent polymerization profiles are recorded. Their efficiency is quite similar to that of a ferrocenium salt. Interpenetrating polymer networks can also be obtained through a concomitant cationic/radical photopolymerization of an epoxy/acrylate blend monomer. The light absorption properties of these new salts as well as the involved photochemical mechanisms are investigated for the first time through electron spin resonance, laser flash photolysis, steady state photolysis experiments. Molecular orbital calculations are also used to shed some light on the initiation mechanisms.

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“…Functionalization of the naphthalimide core and modulation of the photophysical properties are also highly possible, leading to a good versatile platform for photoinitiator design [14]. Because of these properties, 1,8-naphthalimide derivatives have been reported in the literature for various applications ranging from medicine [16] to fluorescence sensors and switchers [17]. As far as polymerization is concerned, dyes of similar architectures have also been reported by Grabchev for copolymerization with styrene and methacrylate resin [18].…”

Section: Introductionmentioning

confidence: 99%

New 1,8-Naphthalimide Derivatives as Photoinitiators for Free-Radical Polymerization Upon Visible Light

et al. 2019

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Photopolymerization processes, and especially those carried out under visible light, are more and more widespread for their multiple advantages compared to thermal processes. In the present paper, new 1,8-naphthalimide derivatives are proposed as photoinitiators for free-radical polymerization upon visible light exposure using light-emitting diodes (LEDs) at 395, 405, and 470 nm. These photoinitiators are used in combination with both iodonium salts and phosphine. The synthesis of these compounds as well as their excellent polymerization initiation ability for methacrylate monomers are presented in this article. A full picture of the involved chemical mechanisms is also provided thanks to photolysis, radical characterization, and redox measurements.

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Synthesis of highly photostable blue-emitting 1,8-naphthalimides and their acrylonitrile copolymers

Cited by 24 publications

References 45 publications

Photochemistry and Radical Chemistry under Low Intensity Visible Light Sources: Application to Photopolymerization Reactions

Photochemistry and Radical Chemistry under Low Intensity Visible Light Sources: Application to Photopolymerization Reactions

Specific cationic photoinitiators for near UV and visible LEDs: Iodonium versus ferrocenium structures

New 1,8-Naphthalimide Derivatives as Photoinitiators for Free-Radical Polymerization Upon Visible Light

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