Dmitry G. Vyshnevsky, Valeriia N. Ovdenko, Valeriy A. Pavlov, Liudmyla Yu Gryshchuk, Nikolay A. Davidenko, Alexander A. Ishchenko
{"title":"New substituted pentazadienes as initiators of free-radical polymerization: synthesis, photochemical properties and perspectives for holographic media","authors":"Dmitry G. Vyshnevsky, Valeriia N. Ovdenko, Valeriy A. Pavlov, Liudmyla Yu Gryshchuk, Nikolay A. Davidenko, Alexander A. Ishchenko","doi":"10.1080/10601325.2023.2257741","DOIUrl":null,"url":null,"abstract":"AbstractThe series of 4,4′-substituted 3-hydroxyethyl-pentaza-1,4-dienes were synthesized in the reaction of aromatic diazonium salts with an ethanol amine. Photolysis of pentaza-1,4-dienes was investigated by means of UV/Vis spectroscopy. Electron donating methyl and methoxy substituents were found to increase photosensitivity whereas electron withdrawing chloro-substituents cause higher photolytic stability. 3-hydroxyethyl-pentaza-1,4-dienes as a radical polymerization initiator has been successfully investigated in 10% methyl methacrylate solution in DMF. Gel permeation chromatography (GPC) and differential scanning calorimetry (DSC) were used for obtained polymers characteristics evaluation. The highest values of PMMA Mn and Đ can be obtained in the case of chloro-substituted derivative. The holograms of a plane wavefront were recorded in media based on obtained PMMA doped by azo-dye by a 532 nm laser in a ∼1-μm-thick sample. The diffraction efficiency values for parallel polarized acting light increased in Cl→Me→OMe series.Keywords: Azo dyesholographydiffraction efficiencyPMMAradical polymerization initiator Disclosure statementThere are no conflicts to declare.","PeriodicalId":50159,"journal":{"name":"Journal of Macromolecular Science Part A-Pure and Applied Chemistry","volume":null,"pages":null},"PeriodicalIF":2.1000,"publicationDate":"2023-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Macromolecular Science Part A-Pure and Applied Chemistry","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1080/10601325.2023.2257741","RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"POLYMER SCIENCE","Score":null,"Total":0}
引用次数: 0
Abstract
AbstractThe series of 4,4′-substituted 3-hydroxyethyl-pentaza-1,4-dienes were synthesized in the reaction of aromatic diazonium salts with an ethanol amine. Photolysis of pentaza-1,4-dienes was investigated by means of UV/Vis spectroscopy. Electron donating methyl and methoxy substituents were found to increase photosensitivity whereas electron withdrawing chloro-substituents cause higher photolytic stability. 3-hydroxyethyl-pentaza-1,4-dienes as a radical polymerization initiator has been successfully investigated in 10% methyl methacrylate solution in DMF. Gel permeation chromatography (GPC) and differential scanning calorimetry (DSC) were used for obtained polymers characteristics evaluation. The highest values of PMMA Mn and Đ can be obtained in the case of chloro-substituted derivative. The holograms of a plane wavefront were recorded in media based on obtained PMMA doped by azo-dye by a 532 nm laser in a ∼1-μm-thick sample. The diffraction efficiency values for parallel polarized acting light increased in Cl→Me→OMe series.Keywords: Azo dyesholographydiffraction efficiencyPMMAradical polymerization initiator Disclosure statementThere are no conflicts to declare.
期刊介绍:
Journal of Macromolecular Science, Part A: Pure and Applied Chemistry (JMS-PAC) is a necessary resource for academic and industrial scientists and engineers whose interests center on both synthetic and naturally occurring polymers and their applications.