201
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202
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Ahmadizadegan H. Synthesis and gas transport properties of novel functional polyimide/ZnO nanocomposite thin film membranes. RSC Adv 2016. [DOI: 10.1039/c6ra21562a] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
In this study, the synthesis, morphology, thermal properties and gas transport of new polyimide/ZnO nanohybrid films were investigated.
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203
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Synthesis of Highly Sulfonated Poly(arylene ether) Containing Multiphenyl for Proton Exchange Membrane Materials. INT J POLYM SCI 2016. [DOI: 10.1155/2016/6545362] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
A series of sterically hindered, sulfonated, poly(arylene ether) polymers were synthesized by nucleophilic polycondensation reaction using 4,4′′′′-difluoro-3,3′′′′-bistrifluoromethyl-2′′,3′′,5′′,6′′-tetraphenyl-[1,1′;4′,1′′;4′′,1′′′;4′′′,1′′′′]-pentaphenyl and 4,4′-biphenol and were prepared through postpolymerization sulfonation. The chemical structures were confirmed by1H NMR. Subsequent to sulfonation, solvent-casting membranes were provided ion exchange capacity (IEC) values ranging from 0.39 to 2.90 mmol/g. Proton conductivities of membranes ranged from 143 to 228 mS/cm at 80°C under fully humidified conditions which were higher than that of Nafion 117. The membrane also exhibited considerably dimension stability, oxidative stability, and hydrolytic stability. The microphase structure was investigated by transmission electron microscopy (TEM) and the ionic aggregation of sulfonic acid groups exhibited spherical ionic clusters with well-developed phase separated morphology. The results indicated that the membranes are promising candidates for application as proton exchange membranes. This investigation demonstrates introducing multiphenylated moieties to create a high free volume polymer that provides dimensionally stable and high proton conductivity membranes.
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204
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Katayev D, Václavík J, Brüning F, Commare B, Togni A. Synthesis of quaternary α-perfluoroalkyl lactams via electrophilic perfluoroalkylation. Chem Commun (Camb) 2016; 52:4049-52. [DOI: 10.1039/c6cc00700g] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The efficient one-pot perfluoroalkylation of lactams by hypervalent iodine reagents is catalysed by trimethylsilyl triflimide.
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Affiliation(s)
- D. Katayev
- Department of Chemistry and Applied Biosciences
- Swiss Federal Institute of Technology
- ETH Zürich
- 8093 Zürich
- Switzerland
| | - J. Václavík
- Department of Chemistry and Applied Biosciences
- Swiss Federal Institute of Technology
- ETH Zürich
- 8093 Zürich
- Switzerland
| | - F. Brüning
- Department of Chemistry and Applied Biosciences
- Swiss Federal Institute of Technology
- ETH Zürich
- 8093 Zürich
- Switzerland
| | - B. Commare
- Department of Chemistry and Applied Biosciences
- Swiss Federal Institute of Technology
- ETH Zürich
- 8093 Zürich
- Switzerland
| | - A. Togni
- Department of Chemistry and Applied Biosciences
- Swiss Federal Institute of Technology
- ETH Zürich
- 8093 Zürich
- Switzerland
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205
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He Z, Tan P, Hu J. Copper-Catalyzed Trifluoromethylation of Polysubstituted Alkenes Assisted by Decarboxylation. Org Lett 2015; 18:72-5. [DOI: 10.1021/acs.orglett.5b03290] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Zhengbiao He
- Key Laboratory of Organofluorine
Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Ling-Ling Road, Shanghai 200032, China
| | - Ping Tan
- Key Laboratory of Organofluorine
Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Ling-Ling Road, Shanghai 200032, China
| | - Jinbo Hu
- Key Laboratory of Organofluorine
Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Ling-Ling Road, Shanghai 200032, China
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206
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Hsiao SH, Peng SC, Kung YR, Leu CM, Lee TM. Synthesis and electro-optical properties of aromatic polyamides and polyimides bearing pendent 3,6-dimethoxycarbazole units. Eur Polym J 2015. [DOI: 10.1016/j.eurpolymj.2015.10.004] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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207
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Rodionov VI, Vaganova TA, Malykhin EV. Selective mono- and diamination of some polyhalogenbenzenes in anhydrous ammonia. J Fluor Chem 2015. [DOI: 10.1016/j.jfluchem.2015.09.003] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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208
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Wozniak AI, Yegorov AS, Ivanov VS, Igumnov SM, Tcarkova KV. Recent progress in synthesis of fluorine containing monomers for polyimides. J Fluor Chem 2015. [DOI: 10.1016/j.jfluchem.2015.08.021] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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209
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Homocianu M, Airinei A, Ipate AM, Dorneanu PP, Hamciuc C. Optical Properties of Some Fluorinated Poly(1,3,4-Oxadiazole-Ether)s in Homogeneous and Heterogeneous Media. Changes Induced by SnO2, NiO and SnO2/NiO Mixed-Oxide Nanoparticles. J Fluoresc 2015; 26:217-24. [PMID: 26518577 DOI: 10.1007/s10895-015-1704-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2015] [Accepted: 10/20/2015] [Indexed: 10/22/2022]
Abstract
Optical characteristics of some fluorinated poly(1,3,4-oxadiazole-ether)s in presence of SnO2, NiO and SnO2/NiO mixed-oxide nanoparticles (NPs) was investigated. The interactions between polymers and metal oxide NPs were studied by steady-state UV-Vis absorption and fluorescence spectroscopy techniques. The absorption and fluorescence signals of all investigated polymers was modified by presence of both pure and mixed-oxide nanoparticles. The moderate values of Stern-Volmer quenching constant and non-linear trend of Scott plot indicate the less affinity between metal oxide NPs and polymers. The solvation behavior of some fluorinated poly(1,3,4-oxadiazole-ether)s in chloroform-N,N-dimethylformamide and N,N-dimethylformamide-dimethylsulfoxide mixtures was discussed.
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Affiliation(s)
- Mihaela Homocianu
- "Petru Poni" Institute of Macromolecular Chemistry, 41A Grigore Ghica Voda Alley, 700487, Iasi, Romania.
| | - Anton Airinei
- "Petru Poni" Institute of Macromolecular Chemistry, 41A Grigore Ghica Voda Alley, 700487, Iasi, Romania
| | - Alina Mirela Ipate
- "Petru Poni" Institute of Macromolecular Chemistry, 41A Grigore Ghica Voda Alley, 700487, Iasi, Romania
| | | | - Corneliu Hamciuc
- "Petru Poni" Institute of Macromolecular Chemistry, 41A Grigore Ghica Voda Alley, 700487, Iasi, Romania
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210
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Anion exchange membranes based on chloromethylation of fluorinated poly(arylene ether)s. Chem Res Chin Univ 2015. [DOI: 10.1007/s40242-015-5236-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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211
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Hsiao SH, Lin JY. Synthesis and electrochromic properties of novel aromatic fluorinated poly(ether-imide)s bearing anthraquinone units. J Fluor Chem 2015. [DOI: 10.1016/j.jfluchem.2015.07.012] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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212
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Huang X, Mei M, Liu C, Pei X, Wei C. Synthesis and Characterization of Fluorinated Polyimide Derived from 3,3′-Diisopropyl-4,4′-diaminodiphenyl-3′′,4′′-difluorophenylmethane. CHINESE J CHEM 2015. [DOI: 10.1002/cjoc.201500393] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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213
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Zoetebier B, Tas S, Vancso GJ, Nijmeijer K, Hempenius MA. Synthesis of poly(arylene ether ketone)s bearing skeletal crown ether units for cation exchange membranes. ACTA ACUST UNITED AC 2015. [DOI: 10.1002/pola.27752] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Bram Zoetebier
- Department of Materials Science and Technology of Polymers, Mesa Institute for Nanotechnology; University of Twente; P.O. Box 217 7500 AE Enschede The Netherlands
| | - Sinem Tas
- Membrane Science and Technology, Mesa Institute for Nanotechnology; University of Twente; P.O. Box 217 7500 AE Enschede The Netherlands
| | - G. Julius Vancso
- Department of Materials Science and Technology of Polymers, Mesa Institute for Nanotechnology; University of Twente; P.O. Box 217 7500 AE Enschede The Netherlands
| | - Kitty Nijmeijer
- Membrane Science and Technology, Mesa Institute for Nanotechnology; University of Twente; P.O. Box 217 7500 AE Enschede The Netherlands
| | - Mark A. Hempenius
- Department of Materials Science and Technology of Polymers, Mesa Institute for Nanotechnology; University of Twente; P.O. Box 217 7500 AE Enschede The Netherlands
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214
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Norbornene end-capped polyimide for low CTE and low residual stress with changes in the diamine linkages. Macromol Res 2015. [DOI: 10.1007/s13233-015-3104-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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215
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Zhu Q, Ji D, Liang T, Wang X, Xu Y. Efficient Palladium-Catalyzed C-H Fluorination of C(sp3)-H Bonds: Synthesis of β-Fluorinated Carboxylic Acids. Org Lett 2015; 17:3798-801. [PMID: 26172446 DOI: 10.1021/acs.orglett.5b01774] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
A novel and facile process for direct fluorination of unactivated C(sp3)-H bonds at the β position of carboxylic acids was accomplished by a palladium(II)-catalyzed C-H activation. The addition of Ag2O and pivalic acid was found to be crucial for the success of this transformation. This reaction provides a versatile strategy for the synthesis of β-fluorinated carboxylic acids.
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Affiliation(s)
- Qihua Zhu
- †State Key Laboratory of Natural Medicines and ‡Jiangsu Key Laboratory of Drug Design and Optimization, Department of Medicinal Chemistry, China Pharmaceutical University, Nanjing 210009, China
| | - Dezhong Ji
- †State Key Laboratory of Natural Medicines and ‡Jiangsu Key Laboratory of Drug Design and Optimization, Department of Medicinal Chemistry, China Pharmaceutical University, Nanjing 210009, China
| | - Tingting Liang
- †State Key Laboratory of Natural Medicines and ‡Jiangsu Key Laboratory of Drug Design and Optimization, Department of Medicinal Chemistry, China Pharmaceutical University, Nanjing 210009, China
| | - Xueyan Wang
- †State Key Laboratory of Natural Medicines and ‡Jiangsu Key Laboratory of Drug Design and Optimization, Department of Medicinal Chemistry, China Pharmaceutical University, Nanjing 210009, China
| | - Yungen Xu
- †State Key Laboratory of Natural Medicines and ‡Jiangsu Key Laboratory of Drug Design and Optimization, Department of Medicinal Chemistry, China Pharmaceutical University, Nanjing 210009, China
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216
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Sava I, Bruma M, Ronova IA. The influence of conformational parameters on some physical properties of polyimides containing naphthalene units. HIGH PERFORM POLYM 2015. [DOI: 10.1177/0954008315584180] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Conformational parameters of some aromatic polyimides–containing naphthalene units have been calculated by Monte Carlo method taking into consideration the hindered rotation produced by voluminous naphthalene units. Several physical properties such as solubility, glass transition temperature ( Tg), and initial decomposition temperature ( Td) have been studied with regard to the rigidity of the chain of these polyimides. It has been shown that Tg is well correlated with chain rigidity and with free volume ( Vfr) of the polymers, while the Td is not influenced by conformational parameters.
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Affiliation(s)
- Ion Sava
- “Petru Poni” Institute of Macromolecular Chemistry, Iasi, Romania
| | - Maria Bruma
- “Petru Poni” Institute of Macromolecular Chemistry, Iasi, Romania
| | - Inga A. Ronova
- Nesmeyanov Institute of Organoelement Compounds, Moscow, Russia
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217
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Constantin CP, Damaceanu MD, Varganici C, Wolinska-Grabczyk A, Bruma M. Dielectric and gas transport properties of highly fluorinated polyimides blends. HIGH PERFORM POLYM 2015. [DOI: 10.1177/0954008315584181] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
The physicochemical properties of highly fluorinated polyimide blends were studied in order to highlight the advantages of employing a high content of fluorine atoms to tailor the properties of polyimide materials. Thus, dynamo-mechanical analysis was used to evidence the physical phenomena taking place during heating. The trend of storage modulus, loss modulus and loss factor tangent with temperature during and after the α relaxation was explored. The dielectric spectroscopy was carried out to investigate the dielectric behaviour at different temperatures and frequencies and to evaluate the values of dielectric constant, dielectric loss and electrical resistance. The dielectric spectroscopy data were corroborated with the dynamo-mechanical analysis to highlight the sub-glass transitions encountered in these blend films. Dielectric loss diagrams showed sub-glass transitions in the form of γ and β relaxations mainly due to the segmental mobility of the polymer chain components. The gas separation performance of some of the investigated blends was assesed, and their ability to achieve simultaneously higher gas permeability and higher selectivity was demonstrated.
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Affiliation(s)
| | | | | | | | - Maria Bruma
- “Petru Poni” Institute of Macromolecular Chemistry, Iasi, Romania
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218
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Synthesis of allyl-containing poly(arylene ether)s copolymers with mono- and biphenylene fragments in main chain. Polym J 2015. [DOI: 10.15407/polymerj.37.02.168] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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219
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Rafiee Z. High Thermally Stable and Organosoluble New Poly(amide-imide)s Derived from Bis(4-trimellitimido phenoxy)phenyl Triptycene. J MACROMOL SCI B 2015. [DOI: 10.1080/00222348.2015.1037216] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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220
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Iwan A, Malinowski M, Sikora A, Tazbir I, Pasciak G, Grabiec E. Nafion-115/aromatic poly(etherimide) with isopropylidene groups/imidazole membranes for polymer fuel cells. J Appl Polym Sci 2015. [DOI: 10.1002/app.42436] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Agnieszka Iwan
- Division of Electrotechnology and Materials Science; Electrotechnical Institute; M. Sklodowskiej-Curie 55/61 Str. 50-369 Wrocław Poland
| | - Marek Malinowski
- Division of Electrotechnology and Materials Science; Electrotechnical Institute; M. Sklodowskiej-Curie 55/61 Str. 50-369 Wrocław Poland
| | - Andrzej Sikora
- Division of Electrotechnology and Materials Science; Electrotechnical Institute; M. Sklodowskiej-Curie 55/61 Str. 50-369 Wrocław Poland
| | - Igor Tazbir
- Division of Electrotechnology and Materials Science; Electrotechnical Institute; M. Sklodowskiej-Curie 55/61 Str. 50-369 Wrocław Poland
| | - Grzegorz Pasciak
- Division of Electrotechnology and Materials Science; Electrotechnical Institute; M. Sklodowskiej-Curie 55/61 Str. 50-369 Wrocław Poland
| | - Eugenia Grabiec
- Center of Polymer and Carbon Materials; Polish Academy of Science; 34 M. Sklodowska-Curie Str. 41-819 Zabrze Poland
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221
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AGRAWAL SEEMA, NARULA ANUDEEPKUMAR. Synthesis and characterization of heat-resistant and soluble poly(amide-imide)s from unsymmetrical dicarboxylic acid containing 2-(triphenyl phosphoranylidene) moiety and various aromatic diamines. J CHEM SCI 2015. [DOI: 10.1007/s12039-015-0830-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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222
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Mallakpour S, Dinari M, Nabiyan A. A facile and simple synthetic strategy for the preparation of modified NiAl-layered double hydroxide as nanofiller for L-phenylalanine containing poly(amide-imide)s based nanocomposites. Des Monomers Polym 2015. [DOI: 10.1080/15685551.2015.1041087] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
Affiliation(s)
- Shadpour Mallakpour
- Organic Polymer Chemistry Research Laboratory, Department of Chemistry, Isfahan University of Technology, Isfahan, 84156-83111, Islamic Republic of Iran
- Nanotechnology and Advanced Materials Institute, Isfahan University of Technology, Isfahan, 84156-83111, Islamic Republic of Iran
- Department of Chemistry, Center of Excellence in Sensors and Green Chemistry, Isfahan University of Technology, Isfahan, 84156-83111, Islamic Republic of Iran
| | - Mohammad Dinari
- Organic Polymer Chemistry Research Laboratory, Department of Chemistry, Isfahan University of Technology, Isfahan, 84156-83111, Islamic Republic of Iran
- Nanotechnology and Advanced Materials Institute, Isfahan University of Technology, Isfahan, 84156-83111, Islamic Republic of Iran
| | - Afshin Nabiyan
- Organic Polymer Chemistry Research Laboratory, Department of Chemistry, Isfahan University of Technology, Isfahan, 84156-83111, Islamic Republic of Iran
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223
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Synthesis and characterization of branched phenylethynyl-terminated polyimides. JOURNAL OF POLYMER RESEARCH 2015. [DOI: 10.1007/s10965-015-0735-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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224
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Abstract
We have developed a practical method to synthesize fluorostyrene compounds. A mild and regioselective mono-fluorination reaction occurred smoothly for various di- and trisubstituted styrenes in the presence of RuCl3 and N-fluorobenzenesulfonimide (NFSI). A tandem alkyne hydroarylation-olefin fluorination reaction was also developed using an Au catalyst.
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Affiliation(s)
- Qian Shao
- Key Laboratory of Chemical Genomics, Peking University, Shenzhen Graduate School, Shenzhen, 518055 China.
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225
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Zhang X, Wang J, Wan Z. New Reagent for Highly Efficient Synthesis of Trifluoromethyl-Substituted Arenes and Heteroarenes. Org Lett 2015; 17:2086-9. [DOI: 10.1021/acs.orglett.5b00619] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Xiaomin Zhang
- Neurodegeneration DPU, GlaxoSmithKline, 898 Halei Road, Zhangjiang Hi-Tech
Park, Pudong, Shanghai 201203, China
| | - Jian Wang
- Neurodegeneration DPU, GlaxoSmithKline, 898 Halei Road, Zhangjiang Hi-Tech
Park, Pudong, Shanghai 201203, China
| | - Zehong Wan
- Neurodegeneration DPU, GlaxoSmithKline, 898 Halei Road, Zhangjiang Hi-Tech
Park, Pudong, Shanghai 201203, China
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226
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Amutha N, Tharakan SA, Sarojadevi M. Synthesis and characterization of new soluble polyimides based on pyridine unit with flexible linkages. HIGH PERFORM POLYM 2015. [DOI: 10.1177/0954008315579470] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
A series of new polyimides were synthesized by condensation of pyridine-bridged novel diamine monomers, bis(4-aminobenzoyloxy-3,5-dimethyl phenyl)-3′-pyridyl methane and 2,6-bis(2-amino-3-pyridyloxy)pyridine, with various aromatic anhydrides. The monomers and precursors were characterized by elemental analysis, Fourier transform infrared (FTIR), proton nuclear magnetic resonance (1H NMR), and carbon-13 nuclear magnetic resonance (13C NMR) spectroscopic techniques. The structure of the polymers were characterized by FTIR and 1H-NMR spectroscopy, and the physical properties of the polymers, including the glass transition temperature (in the range of 199–319°C), thermal and thermo-oxidative stability (10% weight loss temperature is in the range of 375–539°C in air and 403–542°C in nitrogen atmospheres), the char yield in the range of 37.91–56.65% at 800°C, solubility, solution viscosity (0.81–1.81), molecular weight data, optical properties, crystallinity, mechanical properties like tensile strength (86–102 MPa), elongation at break (12.5–16.5%), tensile modulus (1.2–1.8 GPa), and moisture absorption were also studied.
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Affiliation(s)
- N. Amutha
- Department of Chemistry, College of Engineering, Anna University, Chennai, Tamil Nadu, India
| | - Simi A. Tharakan
- Department of Chemistry, College of Engineering, Anna University, Chennai, Tamil Nadu, India
| | - M. Sarojadevi
- Department of Chemistry, College of Engineering, Anna University, Chennai, Tamil Nadu, India
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227
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Jang SY, Han SH. Sulfonated polySEPS/hydrophilic-SiO2 composite membranes for polymer electrolyte membranes (PEMs). J IND ENG CHEM 2015. [DOI: 10.1016/j.jiec.2014.08.030] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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228
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Maniam S, Cox RP, Langford SJ, Bell TDM. Unexpected Photoluminescence of Fluorinated Naphthalene Diimides. Chemistry 2015; 21:4133-40. [DOI: 10.1002/chem.201405876] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2014] [Indexed: 12/17/2022]
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229
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Synthesis of electroactive and electrochromic poly(amide-imide)s containing diphenylpyrenylamine moieties. JOURNAL OF POLYMER RESEARCH 2015. [DOI: 10.1007/s10965-014-0646-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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230
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Brown DK, Cracowski JM, Iacono ST, Christensen K, Smith DW. Preparation of segmented semifluorinated poly(aryl ether)s from aromatic trifluorovinyl ethers and oligo(ethylene glycol)s. J Appl Polym Sci 2015. [DOI: 10.1002/app.41798] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Dakarai K. Brown
- Department of Chemistry and Center for Optical Materials Science and Engineering Technologies (COMSET); Clemson, University; Clemson South Carolina 29634
| | - Jean-Marc Cracowski
- Department of Chemistry and Center for Optical Materials Science and Engineering Technologies (COMSET); Clemson, University; Clemson South Carolina 29634
| | - Scott T. Iacono
- Department of Chemistry and Center for Optical Materials Science and Engineering Technologies (COMSET); Clemson, University; Clemson South Carolina 29634
| | - Kenneth Christensen
- Department of Chemistry and Center for Optical Materials Science and Engineering Technologies (COMSET); Clemson, University; Clemson South Carolina 29634
| | - Dennis W. Smith
- Department of Chemistry and Center for Optical Materials Science and Engineering Technologies (COMSET); Clemson, University; Clemson South Carolina 29634
- Department of Chemistry and The Alan G. MacDiramid NanoTech Institute; The University of Texas at Dallas; Richardson Texas 75080
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231
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Du Y, Zhu K, Fang Y, Zhang S, Zhang X, Lu Y, Yang Y, Song Y, Wang G. Poly(arylene ether ketone)s with pendant porphyrins: synthesis and investigation on optical limiting properties. RSC Adv 2015. [DOI: 10.1039/c5ra05453b] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A series of poly(arylene ether ketone)s with porphyrin pendants were synthesized, which exhibited superior NLO, optical limiting and good thermal properties as novel polymer NLO materials.
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Affiliation(s)
- Yinlong Du
- College of Chemistry
- Key Laboratory of High Performance Plastics
- Ministry of Education
- Jilin University
- Changchun 130012
| | - Kai Zhu
- College of Chemistry
- Key Laboratory of High Performance Plastics
- Ministry of Education
- Jilin University
- Changchun 130012
| | - Yu Fang
- College of Physics
- Optoelectronics and Energy
- Soochow University
- Suzhou 215006
- China
| | - Shuling Zhang
- College of Chemistry
- Key Laboratory of High Performance Plastics
- Ministry of Education
- Jilin University
- Changchun 130012
| | - Xingrui Zhang
- College of Chemistry
- Key Laboratory of High Performance Plastics
- Ministry of Education
- Jilin University
- Changchun 130012
| | - Yaning Lu
- College of Chemistry
- Key Laboratory of High Performance Plastics
- Ministry of Education
- Jilin University
- Changchun 130012
| | - Yanchao Yang
- College of Chemistry
- Key Laboratory of High Performance Plastics
- Ministry of Education
- Jilin University
- Changchun 130012
| | - Yinglin Song
- College of Physics
- Optoelectronics and Energy
- Soochow University
- Suzhou 215006
- China
| | - Guibin Wang
- College of Chemistry
- Key Laboratory of High Performance Plastics
- Ministry of Education
- Jilin University
- Changchun 130012
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232
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Javadi A, Najjar Z, Bahadori S, Vatanpour V, Malek A, Abouzari-Lotf E, Shockravi A. High refractive index and low-birefringence polyamides containing thiazole and naphthalene units. RSC Adv 2015. [DOI: 10.1039/c5ra18898a] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Highly refractive and solution processable polyamides (PAs) were synthesized by the introduction of thiazole rings, naphthalene groups, and thioether linkages.
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Affiliation(s)
- Ali Javadi
- Department of Polymer Engineering
- University of Akron
- Akron
- USA
| | - Zahra Najjar
- Faculty of Chemistry
- Kharazmi University
- 15719-14911 Tehran
- Iran
| | - Saedeh Bahadori
- Faculty of Chemistry
- Kharazmi University
- 15719-14911 Tehran
- Iran
| | - Vahid Vatanpour
- Faculty of Chemistry
- Kharazmi University
- 15719-14911 Tehran
- Iran
| | - Ali Malek
- Department of Chemistry
- Simon Fraser University
- Burnaby
- Canada
| | - Ebrahim Abouzari-Lotf
- Center of Hydrogen Energy
- Institute of Future Energy
- International Campus
- Universiti Teknologi Malaysia
- 54100 Kuala Lumpur
| | - Abbas Shockravi
- Faculty of Chemistry
- Kharazmi University
- 15719-14911 Tehran
- Iran
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233
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Hsiao SH, Cheng SL. Ambipolar and multi-electrochromic polyimides based onN,N-di(4-aminophenyl)-N′,N′-diphenyl-4,4′-oxydianiline. POLYM INT 2014. [DOI: 10.1002/pi.4856] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- Sheng-Huei Hsiao
- Department of Chemical Engineering and Biotechnology; National Taipei University of Technology; Taipei 10608 Taiwan
| | - Shou-Lun Cheng
- Department of Chemical Engineering and Biotechnology; National Taipei University of Technology; Taipei 10608 Taiwan
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234
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Balasubramanian R, Jayaseeli X, Sarojadevi M. Structure–property relationship of polyetherimide based on aromatic dianhydride and long alkyl chain containing aromatic diamines. HIGH PERFORM POLYM 2014. [DOI: 10.1177/0954008314561130] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
A series of new poly(ether imide)s (PEIs) were synthesized from different commercially available dianhydrides like 3,3′,4,4′-benzophenonetetracarboxylic dianyhride (BTDA) and pyromellitic dianhydride (PMDA) and diamines like 1,4-bis(4-aminophenoxy)propane, 1,4-bis(4-aminophenoxy)butane, 1,4-bis(4-aminophenoxy)pentane, and 1,4-bis(4-aminophenoxy)hexane by a typical two-step polymerization method. The structure of the monomers and PEIs prepared were confirmed by Fourier transform infrared spectroscopy, proton nuclear magnetic resonance and carbon-13 nuclear magnetic resonance spectral analysis. Solubility of the PEIs was tested in various organic solvents. Thermal properties of the PEIs were investigated by thermogravimetric analysis and differential scanning calorimetry. The temperature corresponding to 5% ( T5%) and 10% ( T10%) weight loss are from 318°C to 418°C and from 380°C to 480°C, respectively. These PEIs exhibit glass transition temperature in the range of 195–245°C, very low water absorption (0.37–0.62%), and low dielectric constant (2.68–3.17) at 1 MHz. The PEIs film possessed good mechanical properties with tensile strength of 77–98 MPa, elongation at break of 8–13%, and tensile modulus of 1.5–2.2 GPa. These results imply that the synthesized PEIs are well suited to be used as dielectric materials. Based on these studies the structure–property relationships were established.
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Affiliation(s)
| | - X. Jayaseeli
- Department of Chemistry, Anna University, Chennai, Tamilnadu, India
| | - M. Sarojadevi
- Department of Chemistry, Anna University, Chennai, Tamilnadu, India
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235
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Yao P, Gu J, Lei X, Sun W, Chen Y, Zhang Q. Highly soluble and thermally stable copolyimides modified with trifluoromethyl and siloxane. J Appl Polym Sci 2014. [DOI: 10.1002/app.41713] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Pan Yao
- Department of Applied Chemistry; School of Science; Northwestern Polytechnical University; Xi'an Shaan xi 710072 China
| | - Junwei Gu
- Department of Applied Chemistry; School of Science; Northwestern Polytechnical University; Xi'an Shaan xi 710072 China
| | - Xingfeng Lei
- Department of Applied Chemistry; School of Science; Northwestern Polytechnical University; Xi'an Shaan xi 710072 China
| | - Wanlu Sun
- Department of Applied Chemistry; School of Science; Northwestern Polytechnical University; Xi'an Shaan xi 710072 China
| | - Ying Chen
- Department of Applied Chemistry; School of Science; Northwestern Polytechnical University; Xi'an Shaan xi 710072 China
| | - Qiuyu Zhang
- Department of Applied Chemistry; School of Science; Northwestern Polytechnical University; Xi'an Shaan xi 710072 China
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236
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Kim SD, Kim SY, Chung IS. Unprecedented Lower Critical Solution Temperature Behavior of Polyimides in Organic Media. Macromolecules 2014. [DOI: 10.1021/ma501921z] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Sun Dal Kim
- Department of Chemistry, KAIST, Daejeon 305-701, Korea
| | - Sang Youl Kim
- Department of Chemistry, KAIST, Daejeon 305-701, Korea
| | - Im Sik Chung
- Polymer & Nanomaterial Research Part, KRIBB, Daejeon 305-806, Korea
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237
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Tian S, Sun J, Jin K, Wang J, He F, Zheng S, Fang Q. Postpolymerization of a fluorinated and reactive poly(aryl ether): an efficient way to balance the solubility and solvent resistance of the polymer. ACS APPLIED MATERIALS & INTERFACES 2014; 6:20437-20443. [PMID: 25350608 DOI: 10.1021/am506019s] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
A new fluorinated poly(aryl ether) with reactive benzocyclobutene groups as the side chain was successfully synthesized. This polymer showed a number-average molecular weight (Mn) of 200,000 and had good solubility and film-forming ability. After being postpolymerized at high temperature (>200 °C), the polymer film converted to a cross-linked network structure, which was insoluble in the common organic solvents. Such results suggest that the postpolymerization is an efficient way to achive the balance between the solubility and the solvent resistance of the polymer. TGA data showed that the postpolymerized polymer had a 5 wt % loss temperature at 495 °C and a residual of 61% at 1000 °C under N2. The cross-linked film also exhibited good dielectric properties with an average dielectric constant of about 2.62 in a range of frequencies from 1 to 30 MHz. With regard to the mechanical properties, the cross-linked film had hardness, Young's modulus, and bonding strength to a silicon wafer of 1.22, 8.8, and 0.89 GPa, respectively. These data imply that this new polymer may have potential applications in the electrical and microelectronics industry.
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Affiliation(s)
- Song Tian
- Key Laboratory of Synthetic and Self-Assembly Chemistry for Organic Functional Molecules, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences , 345 Lingling Road, Shanghai 200032, P. R. China
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238
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Gao B, Zhao Y, Hu J. AgF-Mediated Fluorinative Cross-Coupling of Two Olefins: Facile Access to α-CF3Alkenes and β-CF3Ketones. Angew Chem Int Ed Engl 2014; 54:638-42. [DOI: 10.1002/anie.201409705] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2014] [Indexed: 11/11/2022]
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239
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Gao B, Zhao Y, Hu J. AgF-Mediated Fluorinative Cross-Coupling of Two Olefins: Facile Access to α-CF3Alkenes and β-CF3Ketones. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201409705] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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240
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Ghosh S, Banerjee S. Fluorinated poly(arylene ether)s with aliphatic chain appended cardo moiety: Synthesis and gas transport properties. J Memb Sci 2014. [DOI: 10.1016/j.memsci.2014.07.052] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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241
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Synthesis of α-CF3 azanorbornene and azetidines by aza Diels–Alder or iodine-mediated cyclizations: application in ROMP and ligand design. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2014.09.105] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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242
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Functionalized graphene oxide/polyimide nanocomposites as highly CO2-selective membranes. JOURNAL OF POLYMER RESEARCH 2014. [DOI: 10.1007/s10965-014-0599-9] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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243
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Wang C, Xu C, Li Q, Chen W, Zhao X. Synthesis of new fluorene-based poly(aryl ether) containing pendant tert-butyl groups for low dielectric materials. Colloid Polym Sci 2014. [DOI: 10.1007/s00396-014-3427-1] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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244
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Ramani R, Das V, Singh A, Ramachandran R, Amarendra G, Alam S. Free Volume Study on the Origin of Dielectric Constant in a Fluorine-Containing Polyimide Blend: Poly(vinylidene fluoride-co-hexafluoro propylene)/Poly(ether imide). J Phys Chem B 2014; 118:12282-96. [DOI: 10.1021/jp506039y] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- R. Ramani
- Polymer
Science Division, Defence Materials and Stores Research and Development Establishment, G.T. Road, Kanpur 208 013, India
| | - V. Das
- Polymer
Science Division, Defence Materials and Stores Research and Development Establishment, G.T. Road, Kanpur 208 013, India
| | - A. Singh
- Polymer
Science Division, Defence Materials and Stores Research and Development Establishment, G.T. Road, Kanpur 208 013, India
| | - R. Ramachandran
- Materials
Physics Division, Materials Science Group, Indira Gandhi Centre for Atomic Research, Kalpakkam 603 102, India
| | - G. Amarendra
- Materials
Physics Division, Materials Science Group, Indira Gandhi Centre for Atomic Research, Kalpakkam 603 102, India
| | - S. Alam
- Polymer
Science Division, Defence Materials and Stores Research and Development Establishment, G.T. Road, Kanpur 208 013, India
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245
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Hossain UH, Muench F, Ensinger W. A comparative study on degradation characteristics of fluoropolymers irradiated by high energy heavy ions. RSC Adv 2014. [DOI: 10.1039/c4ra04635h] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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246
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Sava I, Chisca S, Wolinska-Grabczyk A, Jankowski A, Sava M, Grabiec E, Bruma M. Synthesis and thermal, mechanical and gas permeation properties of aromatic polyimides containing different linkage groups. POLYM INT 2014. [DOI: 10.1002/pi.4796] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Ion Sava
- ‘Petru Poni’ Institute of Macromolecular Chemistry; Aleea Grigore Ghica Voda 41A Iasi Romania
| | - Stefan Chisca
- ‘Petru Poni’ Institute of Macromolecular Chemistry; Aleea Grigore Ghica Voda 41A Iasi Romania
| | - Aleksandra Wolinska-Grabczyk
- Centre of Polymer and Carbon Materials; Polish Academy of Sciences; 41-819 Zabrze M. Curie-Sklodowska Str 34 Poland
| | - Andrzej Jankowski
- Centre of Polymer and Carbon Materials; Polish Academy of Sciences; 41-819 Zabrze M. Curie-Sklodowska Str 34 Poland
| | - Mitica Sava
- ‘Petru Poni’ Institute of Macromolecular Chemistry; Aleea Grigore Ghica Voda 41A Iasi Romania
| | - Eugenia Grabiec
- Centre of Polymer and Carbon Materials; Polish Academy of Sciences; 41-819 Zabrze M. Curie-Sklodowska Str 34 Poland
| | - Maria Bruma
- ‘Petru Poni’ Institute of Macromolecular Chemistry; Aleea Grigore Ghica Voda 41A Iasi Romania
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247
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Satpathi H, Pospiech D, Banerjee S, Voit B. Decomposition and combustion studies of phosphine oxide containing aromatic polyethers. Polym Degrad Stab 2014. [DOI: 10.1016/j.polymdegradstab.2014.05.002] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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248
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Mochizuki T, Uchida M, Uchida H, Watanabe M, Miyatake K. Double-layer ionomer membrane for improving fuel cell performance. ACS APPLIED MATERIALS & INTERFACES 2014; 6:13894-13899. [PMID: 24988282 DOI: 10.1021/am503295y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
A double-layer ionomer membrane, thin-layer Nafion (perfluorinated sulfonic acid polymer) on a sulfonated aromatic block copolymer (SPK-bl-1), was prepared for improving fuel cell performance. Each component of the double-layer membrane showed similar phase-separated morphologies to those of the original membranes. A fuel cell with the double-layer membrane exhibited lower ohmic resistance and higher cathode performance than those with the original SPK-bl-1 membrane despite their comparable water uptake and proton conductivity. Detailed electrochemical analyses of fuel cell data suggested that the thin Nafion interlayer contributed to improving the interfacial contact between the SPK-bl-1 membrane and the cathode catalyst layer and to mitigating excessive drying of the membrane. The results provide new insight on designing high-performance fuel cells with nonfluorinated ionomer membranes such as sulfonated aromatic polymers.
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Affiliation(s)
- Takashi Mochizuki
- Interdisciplinary Graduate School of Medicine and Engineering, ‡Fuel Cell Nanomaterials Center, and §Clean Energy Research Center, University of Yamanashi , 4 Takeda, Kofu, Yamanashi 400-8510, Japan
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249
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Damaceanu MD, Constantin CP, Bruma M, Belomoina NM. Highly fluorinated polyimide blends – Insights into physico-chemical characterization. POLYMER 2014. [DOI: 10.1016/j.polymer.2014.06.089] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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250
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Nakano Y, Sato E, Matsumoto A. Synthesis and thermal, optical, and mechanical properties of sequence-controlled poly(1-adamantyl acrylate)-block-poly(n-butyl acrylate) containing polar side group. ACTA ACUST UNITED AC 2014. [DOI: 10.1002/pola.27322] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Yoshinori Nakano
- Department of Applied Chemistry and Bioengineering, Graduate School of Engineering; Osaka City University; 3-3-138 Sugimoto Sumiyoshi-ku Osaka 558-8585 Japan
| | - Eriko Sato
- Department of Applied Chemistry and Bioengineering, Graduate School of Engineering; Osaka City University; 3-3-138 Sugimoto Sumiyoshi-ku Osaka 558-8585 Japan
| | - Akikazu Matsumoto
- Department of Applied Chemistry, Graduate School of Engineering; Osaka Prefecture University; 1-1 Gakuen-cho Naka-ku, Sakai Osaka 599-8531 Japan
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