Pub Date : 2019-04-14DOI: 10.17677/FN20714807.2019.02.01
K. E. Chekurov, A. Barabanova, I. V. Blagodatskhikh, A. Peregudov, A. Khokhlov
The radical polymerization of 2,3,4,5,6-pentafluorostyrene (PFS) and 2-hydroxyethyl methacrylate (HEMA) in the presence of chain transfer agent 4-cyano-4(phenylcarbonothioylthio)pentanoic acid was studied. It was shown that PFS polymerization proceeds through a reversible addition-fragmentation chain transfer polymerization mechanism, and that of HEMA polymerization is more complicated. The conditions of preparation of diblock copolymers (DBC) which do not contained the by-products of uncontrolled radical polymerization of PFS were found. Comparative study of contact angles versus water (θ2 ) and diiodomethane (θ2 I 2) of nylon fabric samples, treated with DBC containing 37 mol. % PFSunits, and poly-2,3,4,5,6-pentafluorostyrene (PPFS) was conducted. It is shown that the nylon fabric treated with DBC has higher θ2 О = 125 3o and θ2 I 2 = 1015o than PPFS films (θ Н 2 О = 102 2o иθ2 I 2 = 741o).
研究了2,3,4,5,6-五氟苯乙烯(PFS)和2-甲基丙烯酸羟乙酯(HEMA)在链转移剂4-氰基-4(苯基羰基硫代)戊酸存在下的自由基聚合反应。结果表明，PFS聚合是通过可逆加成-破碎链转移聚合机理进行的，而HEMA聚合的机理更为复杂。找到了制备不含PFS自由基聚合副产物的双嵌段共聚物(DBC)的条件。用含有37 mol. % PFSunits的DBC和聚2,3,4,5,6-五氟苯乙烯(PPFS)处理尼龙织物样品，比较了其与水(θ2)和二碘甲烷(θ2 I 2)的接触角。结果表明，DBC处理后的尼龙织物的θ2 О = 12530和θ2 I 2 = 10150比PPFS膜(θ Н 2 О = 10220 иθ2 I 2 = 7410)高。
{"title":"Synthesis and Repellent Properties of Fluorinated Diblock-Copolymers","authors":"K. E. Chekurov, A. Barabanova, I. V. Blagodatskhikh, A. Peregudov, A. Khokhlov","doi":"10.17677/FN20714807.2019.02.01","DOIUrl":"https://doi.org/10.17677/FN20714807.2019.02.01","url":null,"abstract":"The radical polymerization of 2,3,4,5,6-pentafluorostyrene (PFS) and 2-hydroxyethyl methacrylate (HEMA) in the presence of chain transfer agent 4-cyano-4(phenylcarbonothioylthio)pentanoic acid was studied. It was shown that PFS polymerization proceeds through a reversible addition-fragmentation chain transfer polymerization mechanism, and that of HEMA polymerization is more complicated. The conditions of preparation of diblock copolymers (DBC) which do not contained the by-products of uncontrolled radical polymerization of PFS were found. Comparative study of contact angles versus water (θ2 ) and diiodomethane (θ2 I 2) of nylon fabric samples, treated with DBC containing 37 mol. % PFSunits, and poly-2,3,4,5,6-pentafluorostyrene (PPFS) was conducted. It is shown that the nylon fabric treated with DBC has higher θ2 О = 125 3o and θ2 I 2 = 1015o than PPFS films (θ Н 2 О = 102 2o иθ2 I 2 = 741o).","PeriodicalId":12217,"journal":{"name":"Fluorine Notes","volume":"2 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87268092","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-02-08DOI: 10.17677/fn20714807.2019.01.02
A. Oflidi
Electrochemical synthesis of terbium (III) waterless complex compounds with fluorine-containing aromatic carboxylic acids of TbL3 content was performed. The structure of obtained complex compounds coordination site was studied using the IR-spectroscopy method, and it was found out, that the coordination between used ligands and Tb3+ ions is bidentate. We also studied luminescent properties of the obtained compounds and showed that the terbium (III) with pentafluorobenzoic acid complex compound has the highest luminescent efficiency.
{"title":"Electrochemical synthesis of Tb3+ waterless luminescent complex compounds with some fluorine-containing aromatic carboxylic acids","authors":"A. Oflidi","doi":"10.17677/fn20714807.2019.01.02","DOIUrl":"https://doi.org/10.17677/fn20714807.2019.01.02","url":null,"abstract":"Electrochemical synthesis of terbium (III) waterless complex compounds with fluorine-containing aromatic carboxylic acids of TbL3 content was performed. The structure of obtained complex compounds coordination site was studied using the IR-spectroscopy method, and it was found out, that the coordination between used ligands and Tb3+ ions is bidentate. We also studied luminescent properties of the obtained compounds and showed that the terbium (III) with pentafluorobenzoic acid complex compound has the highest luminescent efficiency.","PeriodicalId":12217,"journal":{"name":"Fluorine Notes","volume":"27 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-02-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82631683","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-02-08DOI: 10.17677/FN20714807.2019.01.04
E. Belyaeva
{"title":"Chlorin Type Photosensitizers Soluble in Perfluorocarbons: Synthesis and Properties","authors":"E. Belyaeva","doi":"10.17677/FN20714807.2019.01.04","DOIUrl":"https://doi.org/10.17677/FN20714807.2019.01.04","url":null,"abstract":"","PeriodicalId":12217,"journal":{"name":"Fluorine Notes","volume":"63 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-02-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79116463","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-02-08DOI: 10.17677/fn20714807.2019.01.01
L. Kiss
A stereocontrolled procedure is reported for the access of various fluorine-containing piperidine and azepane β-amino esters. The synthetic protocol starts from readily available unsaturated cycloalkene β-amino acids and is based on oxidative cleavage of the ring olefin bond followed by ring closing of the diformyl intermediates in the presence of some fluorine-containing amines across reductive amination. Online journal “Fluorine notes” ISSN 2071-4807, Vol. 1(122), 2019; DOI: 10.17677/fn20714807.2019.01.01 2
{"title":"Stereocontrolled synthesis of N-heterocyclic fluorine-containing β-amino acid derivatives","authors":"L. Kiss","doi":"10.17677/fn20714807.2019.01.01","DOIUrl":"https://doi.org/10.17677/fn20714807.2019.01.01","url":null,"abstract":"A stereocontrolled procedure is reported for the access of various fluorine-containing piperidine and azepane β-amino esters. The synthetic protocol starts from readily available unsaturated cycloalkene β-amino acids and is based on oxidative cleavage of the ring olefin bond followed by ring closing of the diformyl intermediates in the presence of some fluorine-containing amines across reductive amination. Online journal “Fluorine notes” ISSN 2071-4807, Vol. 1(122), 2019; DOI: 10.17677/fn20714807.2019.01.01 2","PeriodicalId":12217,"journal":{"name":"Fluorine Notes","volume":"15 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-02-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84304098","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-02-08DOI: 10.17677/FN20714807.2019.01.03
M. Nazarenko
the results of electrochemical anodic synthesis of coordination compounds of terbium(III) with pentafluorophenylacetic and 2,3,5,6tetrafluoro-4(trifluoromethyl)phenylacetic acids are reported. The structure and properties of terbium(III) synthesized coordination compounds were held by the IRand luminescence spectroscopy. According to IR-spectra data, the bond type of carboxylated ligand’s atom with lanthanid’s ion is mainly ionic. It was found out that at the room temperature terbium (III) complex compounds luminesce in visible area (green luminescence) and have emission bands, corresponding to Tb3 ion energy transitions.
{"title":"Electrochemical anodic synthesis of Tb3+ luminescent coordination compounds with some fluorophenylacetic acids","authors":"M. Nazarenko","doi":"10.17677/FN20714807.2019.01.03","DOIUrl":"https://doi.org/10.17677/FN20714807.2019.01.03","url":null,"abstract":"the results of electrochemical anodic synthesis of coordination compounds of terbium(III) with pentafluorophenylacetic and 2,3,5,6tetrafluoro-4(trifluoromethyl)phenylacetic acids are reported. The structure and properties of terbium(III) synthesized coordination compounds were held by the IRand luminescence spectroscopy. According to IR-spectra data, the bond type of carboxylated ligand’s atom with lanthanid’s ion is mainly ionic. It was found out that at the room temperature terbium (III) complex compounds luminesce in visible area (green luminescence) and have emission bands, corresponding to Tb3 ion energy transitions.","PeriodicalId":12217,"journal":{"name":"Fluorine Notes","volume":"151 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-02-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86160249","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-12-14DOI: 10.17677/FN20714807.2018.06.05
A. Tyutyunov
{"title":"1,1-Dichlorohexafluoroisobutylene and 2,2-Dichloro-3,3-bis(trifluoromethyl)oxirane: Low–Toxic Synthetic Equivalents of Perfluoroisobutylene and Its Derivatives","authors":"A. Tyutyunov","doi":"10.17677/FN20714807.2018.06.05","DOIUrl":"https://doi.org/10.17677/FN20714807.2018.06.05","url":null,"abstract":"","PeriodicalId":12217,"journal":{"name":"Fluorine Notes","volume":"2008 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86225181","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-12-14DOI: 10.17677/fn20714807.2018.06.04
E. Polunin
The new synthesis method of perfluorinated co-polymers on the base of perfluoro-3-oxapent-4-en-1-sulfonylfluoride with perfluorodioxoles, perfluoropropylvinyl ester and perfluoropropene is described. Using hydrolysis on its base there was obtained a material with proton visibility at room temperature and humidity 30% was comparable with such for membrane Nafion.
{"title":"Co-polymerisation of perfluoro-2-fluorosulfonylethylvinyl ester with other perluoromonomers","authors":"E. Polunin","doi":"10.17677/fn20714807.2018.06.04","DOIUrl":"https://doi.org/10.17677/fn20714807.2018.06.04","url":null,"abstract":"The new synthesis method of perfluorinated co-polymers on the base of perfluoro-3-oxapent-4-en-1-sulfonylfluoride with perfluorodioxoles, perfluoropropylvinyl ester and perfluoropropene is described. Using hydrolysis on its base there was obtained a material with proton visibility at room temperature and humidity 30% was comparable with such for membrane Nafion.","PeriodicalId":12217,"journal":{"name":"Fluorine Notes","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77208157","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-12-14DOI: 10.17677/fn20714807.2018.06.03
E. Polunin
New electro-optical polymers with fluorine containing chromophores in a side chain were synthesized. It was shown that under the influence of visible range laser radiation electrooptical polymers translucence takes place, what happens due to not-reversible chromophores destruction. It was found out that, during the photo destruction process, the polymeric materials refractive index n decreases. Optical waveguides, waveguide splitters, directional couplers, Mach-Zender interferometers and other integrated optical devices elements were formed from electro-optical polymers using the photo-clarification method in light-guiding films.
{"title":"Laser formation of light guides in electro optical polymers with fluorine containing chromophores in a side chain","authors":"E. Polunin","doi":"10.17677/fn20714807.2018.06.03","DOIUrl":"https://doi.org/10.17677/fn20714807.2018.06.03","url":null,"abstract":"New electro-optical polymers with fluorine containing chromophores in a side chain were synthesized. It was shown that under the influence of visible range laser radiation electrooptical polymers translucence takes place, what happens due to not-reversible chromophores destruction. It was found out that, during the photo destruction process, the polymeric materials refractive index n decreases. Optical waveguides, waveguide splitters, directional couplers, Mach-Zender interferometers and other integrated optical devices elements were formed from electro-optical polymers using the photo-clarification method in light-guiding films.","PeriodicalId":12217,"journal":{"name":"Fluorine Notes","volume":"28 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80646566","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-12-14DOI: 10.17677/FN20714807.2018.06.02
V. Matalin
A novel method is proposed for the manufacture of perfluoropropionyl fluoride and perfluorobutanedioyl difluoride by electrochemical fluorination of maleic acid anhydride. The method offers essential economic and technological advantages over those earlier used in full-scale production of those fluorides.
{"title":"Electrochemical fluorination of maleic anhydride","authors":"V. Matalin","doi":"10.17677/FN20714807.2018.06.02","DOIUrl":"https://doi.org/10.17677/FN20714807.2018.06.02","url":null,"abstract":"A novel method is proposed for the manufacture of perfluoropropionyl fluoride and perfluorobutanedioyl difluoride by electrochemical fluorination of maleic acid anhydride. The method offers essential economic and technological advantages over those earlier used in full-scale production of those fluorides.","PeriodicalId":12217,"journal":{"name":"Fluorine Notes","volume":"14 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74195726","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-12-14DOI: 10.17677/FN20714807.2018.06.01
T. Yajima, M. Ikegami
Fluorine-containing amino acids are among the most desirable compounds in the medicinal field. Previously, we reported several methods for the synthesis of -perfluoroalkyl amino acids based on radical perfluoroalkylation under UV irradiation or In catalyzed conditions. In this paper, we describe the synthesis of -perfluoroalkyl amino acids by metal-free visible light-induced perfluoroalkylation to dehydroamino acids using Eosin Y as an organic photoredox catalyst. The use of a chiral auxiliary method produced chiral amino acids high stereoselectivity. This ecological method will produce various perfluoroalkylated chiral amino acid derivatives.
{"title":"Synthesis of Chiral Fluorinated Amino Acids by Eosin Y Catalyzed Perfluoroalkyl Radical Addition to Dehydroamino Acids","authors":"T. Yajima, M. Ikegami","doi":"10.17677/FN20714807.2018.06.01","DOIUrl":"https://doi.org/10.17677/FN20714807.2018.06.01","url":null,"abstract":"Fluorine-containing amino acids are among the most desirable compounds in the medicinal field. Previously, we reported several methods for the synthesis of -perfluoroalkyl amino acids based on radical perfluoroalkylation under UV irradiation or In catalyzed conditions. In this paper, we describe the synthesis of -perfluoroalkyl amino acids by metal-free visible light-induced perfluoroalkylation to dehydroamino acids using Eosin Y as an organic photoredox catalyst. The use of a chiral auxiliary method produced chiral amino acids high stereoselectivity. This ecological method will produce various perfluoroalkylated chiral amino acid derivatives.","PeriodicalId":12217,"journal":{"name":"Fluorine Notes","volume":"14 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81114541","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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