Two- and Three-Component Visible Light Photoinitiating Systems for Radical Polymerization Based on Onium Salts: An Overview of Mechanistic and Laser Flash Photolysis Studies

Gómez, María Lorena; Previtali, Carlos M.; Montejano, Hernán A.

doi:10.1155/2012/260728

Cited by 17 publications

(14 citation statements)

References 60 publications

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“…The development of applications involving onium salts (OS) in the photoinitiation of the radical polymerization has been a topic of interest since the late 60s . Numerous papers have dealt with the synergistic mechanism of photosensitizer/amine/OS three component PISs .…”

Section: Introductionmentioning

confidence: 99%

High performance of the linked visible photoinitiator for free radical polymerization based on erythrosine B derivative

Nan

Huang

Fan

et al. 2015

J of Applied Polymer Sci

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A novel erythrosine B derivative linked with a tertiary amine used as a visible light initiator for free radical polymerization was synthesized and characterized. For comparison, the free hydrophobic erythrosine B derivative was also synthesized and its combination with the tertiary amine was used as the separated two component photoinitiator. The linked initiator exhibited higher photoinitiator efficiency in high viscosity monomer than in low viscosity one, compared with the separated counterpart. Especially, when it was combined with iodonium salt, the further promotion of the photoinitiator efficiency was observed, compared with the separated three component system. It was found that as iodonium salt together with tertiary amine was continuously added to the formula with the linked initiator, the photoinitiator efficiency was dramatically enhanced compared with the same addition to the formula with the separated counterpart, revealing the application potential of the linked initiator. And the continuous addition of either the iodium salt or the tertiary amine to the formula only leaded to the small size increase of the photoinitiator efficiency. These results suggested that there existed an interdependent relationship between iodonium salt and tertiary amine in promoting the photoinitiator efficiency of the dye/amine/iodonium salt system. For these, the corresponding synergistic mechanism was proposed.

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Section: Introductionmentioning

confidence: 99%

High performance of the linked visible photoinitiator for free radical polymerization based on erythrosine B derivative

Nan

Huang

Fan

et al. 2015

J of Applied Polymer Sci

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“…The most common photoinitiating systems in the visible light region (400–700 nm) for radical polymerization involve a dye and an amine or organoborate salt as an electron donor . In this case, the active radicals are formed in a bimolecular electron transfer quenching of the singlet or triplet state of the dye by the amine or borate salt.…”

Section: Resultsmentioning

confidence: 99%

New Squaraine‐based two‐component initiation systems for UV‐blue light induced radical polymerization: Kinetic and time‐resolved laser spectroscopy studies

Kabatc

Kostrzewska

Jurek

et al. 2016

J. Polym. Sci. Part A: Polym. Chem.

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In this article, the ability of two-component photoinitiator systems for efficient polymerization of 2-ethyl-2-(hydroxymethyl)21,3-propanediol triacrylate was presented. The photophysics and photochemistry of squaraine dyes in the presence of an electron donor as well as an electron acceptor was investigated, and it was found that the photosensitizer in an excited state might act as an electron acceptor or an electron donor. The excited states of squaraines may be quenched by tetramethylammonium n-butyltriphenylborate (B2), diphenyliodonium chloride (I1), and N-methoxy-4-phenylpyridinium tetrafluoroborate (NO). V C 2016 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2017, 55, 471-484

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“…to become colorless after a prolonged light irradiation or during the polymerization time. At present, examples of photoinitiators capable to bleach remain scarce [14]. In this field, metal complexes are excellent candidates and acylstannanes 1, 2 [15,16].…”

Section: Introductionmentioning

confidence: 99%

Recent advances on carbazole-based photoinitiators of polymerization

Dumur

2020

European Polymer Journal

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Photoinitiators of polymerization that can be activated under visible light and low intensity are actively researched as these compounds constitute the next generation of photoinitiators that will replace the controverted UV-photoinitiators. Over the years, a family of compounds has been identified as being highly promising in light of its remarkable photoinitiating ability, photochemical stability, low cost and easiness to functionalize, namely carbazoles. In this review, an overview of the different carbazole-based photoinitiators reported to date is presented. Interestingly, carbazoles have mostly been used as electron donors in push-pull structures, as photosensitizers for iodonium salts, as ligands for ferrocenium salts or as chromophores for phenacyl onium salts. These different applications clearly demonstrate the versatility of this structure used as the elemental building block for the design of UV, near-UV or visible light photoinitiators.

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Two- and Three-Component Visible Light Photoinitiating Systems for Radical Polymerization Based on Onium Salts: An Overview of Mechanistic and Laser Flash Photolysis Studies

Cited by 17 publications

References 60 publications

High performance of the linked visible photoinitiator for free radical polymerization based on erythrosine B derivative

High performance of the linked visible photoinitiator for free radical polymerization based on erythrosine B derivative

New Squaraine‐based two‐component initiation systems for UV‐blue light induced radical polymerization: Kinetic and time‐resolved laser spectroscopy studies

Recent advances on carbazole-based photoinitiators of polymerization

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