Effect of Polymethine Dyes with Various Electron-Donating Abilities of Terminal Groups on Thermopolymerization of Methylmethacrylate in Solutions

Grabchuk, G. P.; Kolendo, A.; Derevyanko, N. A.; Ishchenko, A. A.

doi:10.1080/15421400802458548

Cited by 2 publications

(7 citation statements)

References 9 publications

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“…The authors suggest that this is due to the high fluorescent ability of the dyes since nonluminescent azo and anthraquinone dyes conversely retard such reactions [206][207][208]. However, the most recent investigations do not support this suggestion [121][122][123]. It was shown that the carbocyanine dye based on benz[c,d]indole, which has extremely weak fluorescence ability [209], substantially accelerates the radical polymerization of MMA [123].…”

Section: Structurally Dyed Polymersmentioning

confidence: 93%

“…This ability changes if the terminal heterocyclic groups deviate from the average electron-donating capacity in the direction of both increase and decrease [123]. In the case of the vinylogous series of indopolycarbocyanines (6)- (8) of one structural type it was established that they have different effects on the kinetics of the polymerization of MMA depending on the length of the polymethine chain, and dye (6) accelerates the reaction while dye (8) inhibits it.…”

Section: Methods Of Introduction Of Dyes Into the Polymer And Their Cmentioning

confidence: 98%

“…In the case of the vinylogous series of indopolycarbocyanines (6)- (8) of one structural type it was established that they have different effects on the kinetics of the polymerization of MMA depending on the length of the polymethine chain, and dye (6) accelerates the reaction while dye (8) inhibits it. On the basis of investigation of the behavior of polymethine dyes with radical traps and, in particular, a,a-diphenyl-b-picrylhydrazyl (DPPH) in [123] it was suggested that the dyes (6)-(8) are cable themselves of forming free radicals, which do affect the course of polymerization of MMA both in the presence of and in the absence of an initiator.…”

Section: Methods Of Introduction Of Dyes Into the Polymer And Their Cmentioning

confidence: 99%

“…It was found that the series of cationic polymethine dyes is capable of initiating the radical thermopolymerization of MMA extremely effectively in the mass [120] and in solution [121][122][123] without an initiator. This ability changes if the terminal heterocyclic groups deviate from the average electron-donating capacity in the direction of both increase and decrease [123].…”

Section: Methods Of Introduction Of Dyes Into the Polymer And Their Cmentioning

confidence: 99%

“…However, the most recent investigations do not support this suggestion [121][122][123]. It was shown that the carbocyanine dye based on benz[c,d]indole, which has extremely weak fluorescence ability [209], substantially accelerates the radical polymerization of MMA [123]. On the other hand the readily fluorescent indotricarbocyanine (8) [209], well known as an HITC laser dye [58], is an inhibitor of this reaction [123].…”

Section: Structurally Dyed Polymersmentioning

confidence: 96%

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Physical and chemical problems of the creation of photostable converters of light energy on the basis of dyed polymers

Ishchenko

Grabchuk

2009

Theor Exp Chem

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The main factors affecting the degradation of dyed polymeric matrices by the action of light (conversion of light energy into thermal energy, electron phototransfer, population of triplets, aggregation of dyes, oxidation-reduction processes, interaction with oxygen, including singlet) are analyzed and classified. Their dependence on the structure of the dyes, the nature of the polymer, and the method of dyeing of the latter is examined. Criteria for the creation of lightfast dyed matrices are formulated. Special attention is directed to contemporary light-sensitive materials in which the dye is covalently bonded to the polymer and to organic-inorganic compositions based on them.Dyed polymers are widely used in laser technology [1][2][3][4][5], media for writing and recording data [6-8], solar power [9][10][11][12], and optoelectronics [12][13][14][15]. Such polymeric materials have a series of operational advantages over dyed liquid materials on account of their more simple and more convenient construction, non-toxicity, and the possibility of working over a wide temperature range (from minus to plus temperatures) and under conditions of weightlessness. However, these advantages can only be realized to the full extent in the solution of various applied problems if dyed matrices with sufficient stability to the action of light are created. The aim of the present review was therefore to analyze, classify, and generalize methods of creating such matrices. FACTORS GIVING RISE TO THE DEGRADATION OF DYED POLYMERS DURING THE ACTION OF LIGHTThe presence of absorbing microimpurities that are heated by radiation are responsible for the radiation damage of optically transparent polymers. Purification from such inclusions at the monomer stage leads to a substantial increase in the threshold of radiation damage in the obtained polymer. For instance, the purification of methylmethacrylate (MMA) by repeated slow distillation raises this threshold of polymethylmethacrylate (PMMA) from several times [16] to two orders of magnitude [17]. 0040-5760/09/4503-0143

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Section: Structurally Dyed Polymersmentioning

confidence: 93%

Section: Methods Of Introduction Of Dyes Into the Polymer And Their Cmentioning

confidence: 98%

Section: Methods Of Introduction Of Dyes Into the Polymer And Their Cmentioning

confidence: 99%

Section: Methods Of Introduction Of Dyes Into the Polymer And Their Cmentioning

confidence: 99%

Section: Structurally Dyed Polymersmentioning

confidence: 96%

See 3 more Smart Citations

Physical and chemical problems of the creation of photostable converters of light energy on the basis of dyed polymers

Ishchenko

Grabchuk

2009

Theor Exp Chem

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Effect of a Structure of Polymethine Dyes on the Methyl Methacrylate Free Radical Polymerization in a Solution

Grabchuk

Kolendo

Derevyanko

et al. 2011

Molecular Crystals and Liquid Crystals

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Effect of Polymethine Dyes with Various Electron-Donating Abilities of Terminal Groups on Thermopolymerization of Methylmethacrylate in Solutions

Cited by 2 publications

References 9 publications

Physical and chemical problems of the creation of photostable converters of light energy on the basis of dyed polymers

Physical and chemical problems of the creation of photostable converters of light energy on the basis of dyed polymers

Effect of a Structure of Polymethine Dyes on the Methyl Methacrylate Free Radical Polymerization in a Solution

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