Naphthoylenebenzimidazolone sensitisers for photo‐oxidisable free radical polymerisation with the aid of pyridinium salts

Kolińska, Jolanta; Sokołowska, Jolanta

doi:10.1111/j.1478-4408.2008.00161.x

Cited by 12 publications

(14 citation statements)

References 17 publications

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“…The basis of the design of the studied initiators was literature reports that concerned the application of naphthoylenebenzimidazolone dyes in two-component initiator systems [2,20,21]. Given continuing interest in the synthesis of novel bifunctional initiators, we prepared dyes based on a 7H-benzimidazo [ skeleton (2)(3)(4)(5).…”

Section: Resultsmentioning

confidence: 99%

Naphthoylenebenzimidazolone dyes as one‐component photoinitiators

Strzelczyk

2017

Coloration Technology

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The appropriate substituents have been added to a 7H-benzimidazo[2,1-a]benz [de]isoquinolin-7-one skeleton in order to obtain a one-component initiator system. The absorption, fluorescence, and electrochemical properties of these naphthoylenebenzimidazolone dyes and their usefulness as visible light initiators of free radical polymerisation of trimethylolpropane triacrylate were examined. The initiation efficiency of these dyes was compared with that of the parent 7H-benzimidazo[2,1-a]benz[de]isoquinolin-7-one in the presence of a coinitiator. Results show that these bifunctional dyes are able to initiate polymerisation without an additional coinitiator. Photopolymerisation studies and the relationship between the rate of polymerisation and the free energy change for electron transfer revealed that, depending on the concentration, initiating radicals are generated via intra-and intermolecular electron transfer.

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Section: Resultsmentioning

confidence: 99%

Naphthoylenebenzimidazolone dyes as one‐component photoinitiators

Strzelczyk

2017

Coloration Technology

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“…In presence of photosensitizers, the iodonium salts act via photooxidizable mechanism in the visible light region . In one of proposed mechanism, the iodonium salt and photosensitizer undergo bimolecular reaction via electron transfer from dye molecule, to form a dye‐based radical cation and diphenyliodonium radical .…”

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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“…The electrochemical experiments were conducted in N , N ‐dimethylformamide in the manner described by Kolińska et al . . Base adsorption experiments were performed to measure the density of hydroxyl surface groups .…”

Section: Methodsmentioning

confidence: 99%

Synthesis and ultraviolet‐visible spectroscopic and electrochemical analyses of dyes derived from 2‐aminobenzothiazole, and study of their adsorption on titanium dioxide

Maruszewska

2014

Coloration Technology

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A series of Schiff bases with hydroxyl anchoring group/s in various positions were synthesised. Their visible light absorption and electrochemical and physicochemical adsorption properties were investigated. Results show that the studied compounds have adequate highest‐occupied‐molecular‐orbital and lowest‐unoccupied‐molecular‐orbital levels that match with the conduction band of titanium dioxide and the redox potential of the electrolyte. Adsorption of azomethine compounds with hydroxyl group/s on titanium dioxide was studied. Experimental data show that the introduction of two β‐hydroxyethyl groups can greatly enhance the adsorption efficiency of the studied Schiff base on titanium dioxide. Sorption kinetics was measured for di‐(β‐hydroxyethyl)aminobenzyliden‐2‐aminobenzothiazol. Results show rapid initial sorption (<30 min), followed by a slower rate of increasing uptake between 0.5 and 6 h. Kinetic data were modelled using pseudo‐first‐order, pseudo‐second‐order, and intraparticle diffusion kinetics equations. These results indicate that the pseudo‐second‐order equation and intraparticle diffusion model can better describe the adsorption kinetics of di‐(β‐hydroxyethyl)aminobenzyliden‐2‐aminobenzothiazol onto titanium dioxide.

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Naphthoylenebenzimidazolone sensitisers for photo‐oxidisable free radical polymerisation with the aid of pyridinium salts

Cited by 12 publications

References 17 publications

Naphthoylenebenzimidazolone dyes as one‐component photoinitiators

Naphthoylenebenzimidazolone dyes as one‐component photoinitiators

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

Synthesis and ultraviolet‐visible spectroscopic and electrochemical analyses of dyes derived from 2‐aminobenzothiazole, and study of their adsorption on titanium dioxide

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