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  • 1
    Electronic Resource
    Electronic Resource
    Synthesis and polymerization of nucleic acid base substituted L-lysine (1978)
    Springer
    Polymer bulletin 1 (1978), S. 215-220 
    Details
    ISSN: 1436-2449
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Summary Poly-l-lysines containing nucleic acid bases, that is, adenine, thymine, uracil and theophylline were synthesized. The nucleic acid base substituted l-lysine derivatives were prepared from α,N-Cbz-l-lysine and the p-nitrophenyl esters of the carboxyethyl derivatives of the nucleic acid bases. The polymers were obtained from these l-lysine derivatives by the NCA method.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00283073
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  • 2
    Electronic Resource
    Electronic Resource
    Synthesis of polyacrylic and polymethacrylic derivatives having pendant uracil and thymine moieties (1980)
    Springer
    Polymer bulletin 2 (1980), S. 195-199 
    Details
    ISSN: 1436-2449
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Summary Polyacrylic and polymethacrylic derivatives containing different contents of pendant uracil and thymine units were prepared by the polymeranalogous reaction using cyclic derivatives of uracil and thymine. The ability of the interaction between thymine bases in the copolymer chain was found to be parallel to the thymine content.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00254584
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  • 3
    Electronic Resource
    Electronic Resource
    Synthesis of nucleic acid base substituted poly-L-lysine (1978)
    Springer
    Polymer bulletin 1 (1978), S. 85-89 
    Details
    ISSN: 1436-2449
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Summary As a new type of the nucleic acid analogs, poly-L-lysine derivatives containing adenine, thymine and uracil were prepared. By using the activated ester method, carboxyethyl derivatives of the nucleic acid bases were grafted onto poly-L-lysine. The thymine and uracil derivatives were completely substituted to poly-L-lysine. The content of adenine unit in the polymer, however, was less than that of the thymine analog.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00255719
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  • 4
    Electronic Resource
    Electronic Resource
    Vinyl polymerization by metal complexes, 11Part 10, cf.1.. Formation of polyvinylamine-copper(II) chelatesDedicated to Professor Dr. ICHIRO SAKURADA on his 70th birthday (1974)
    New York : Wiley-Blackwell
    Die Makromolekulare Chemie 175 (1974), S. 83-93 
    Details
    ISSN: 0025-116X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: Um den Mechanismus der Katalyse der Polyvinylamin-Kupfer(II)-Chelate bei der Auslösung der Vinylpolymerisation zu klären, wurden die Stabilitätskonstanten dieser Chelate durch Anwendung einer modifizierten BJERRUMschen Methode gemessen, und die Konzentration der chemischen Spezies wurde auf Grund der Chelattheorie abgeschätzt. Anhand dieser Ergebnisse wurde die Aktivität der Polyvinylamin-Kupfer(II)-Chelate bei der Polymerisation von Acrylnitril und von Methylmethacrylat bei verschiedenen pH-Werten diskutiert.
    Notes: In order to clarify the mechanism of catalysis of polyvinylamine-copper(II) chelates on the initiation of vinyl polymerizations, stability constants of these chelates were measured by applying a modification of BJERRUM'S method, and each concentration of the chemical species was estimated on the basis of the chelate theory. From these results, the activity of the polyvinylamine-copper(II) chelates for the polymerization of acrylonitrile and methyl methacrylate at different pH values was discussed.
    Additional Material: 9 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/macp.1974.021750110
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  • 5
    Electronic Resource
    Electronic Resource
    Functional monomers and polymers, 24Part 23: M. Miyata, K. Takemoto, J. Polym. Sci., Polym. Lett. Ed., 13, 221 (1975).. Emission spectra of polymers containing nucleic acid bases (1975)
    New York : Wiley-Blackwell
    Die Makromolekulare Chemie 176 (1975), S. 2683-2699 
    Details
    ISSN: 0025-116X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: Die Emissions- und die UV-Spektren von monomeren und dimeren Modellverbindungen und von Polymeren, die Adenin-, 6-(Methylamino)purin-oder 6-(Dimethylamino)purin-Gruppen enthalten, wurden bei 77 K in Wasser/Äthylenglykol oder Äthanol vermessen. Es konnten so Informationen über den Charakter und die Stärke der zwischen den Nukleinbasen herrschenden Wechselwirkungen erhalten werden. Die Emissionsspektren der Dimeren und Polymeren zeigen bei geeignetem Abstand der Adeninringe starke Wechselwirkungen und die Bildung von Excimeren an. Allerdings wurden in Äthanol oder in Wasser/Äthylenglykol-Mischungen bei pH=2 keine Excimeremissionen mehr beobachtet. Die UV-Spektren lassen auf zwei verschiedene Arten von Wechselwirkungen zwischen den Nukleinbasen schließen, je nachdem ob diese „plane in plane“ oder koplanar angeordnet sind.
    Notes: The emission and the ultraviolet spectroscopies were studied at 77 K in water/ethylene glycol or ethanol for polymers containing adenine, 6-(methylamino)purine, and 6-(dimethylamino)purine moieties, and for the corresponding dimeric and monomeric model compounds, in order to obtain more information about the nature and extent of the interactions between nucleic acid bases in the polymer chains. The emission spectra of the dimeric compounds and the polymers suggested the formation of excimers and the existence of strong interactions between the adenine rings of suitable compounds. These excimer emissions were not observed in the spectra measured in ethanol, and in water/ethylene glycol solutions at pH 2. The ultraviolet spectra suggested two kinds of base-base interactions for plane in plane and coplanar arrangement.
    Additional Material: 21 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/macp.1975.021760917
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  • 6
    Electronic Resource
    Electronic Resource
    Functional monomers and polymers, 40Part 39: M. Miyata, K. Takemoto, Polym. J. 9, 111 (1977). A convenient synthesis of N-(2-methacryloyloxy)ethyl derivatives of nucleic acid bases (1977)
    New York : Wiley-Blackwell
    Die Makromolekulare Chemie 178 (1977), S. 1211-1214 
    Details
    ISSN: 0025-116X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/macp.1977.021780423
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  • 7
    Electronic Resource
    Electronic Resource
    Vinyl polymerization by metal complexes. VI. On the initiation mechanism of vinyl polymerization by the α-amino acid ester/copper(II) systemPart V, cf.5. (1973)
    New York : Wiley-Blackwell
    Die Makromolekulare Chemie 166 (1973), S. 189-198 
    Details
    ISSN: 0025-116X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: Die Polymerisation von Acrylnitril und Methylmethacrylat wurde in Anwesenheit von α-Aminosäureester sowie Kupfer(II)ionen in Dimethylsulfoxidlösung untersucht. Spektroskopische Messungen bestätigten, daß der Start-Mechanismus der durch das System α-Aminosäureester/Kupfer(II)ion initiierten Polymerisation mit den komplexbildenden Eigenschaften des Systems zusammenhängt. Die Polymerisation der beiden Monomeren war von der Art der α-Alkylgruppe der α-Aminosäureester abhängig, wurde aber von der Art der Estergruppe nicht beeinflußt. Basierend auf den Ergebnissen, wurde der Charakter der freien Radikale diskutiert.
    Notes: Polymerization of acrylonitrile and methyl methacrylate was studied in the presence of an α-amino acid ester and copper(II) ion in dimethyl sulfoxide solution. The initiation mechanism of the polymerization by the α-amino acid ester/copper(II) system was refered to the complex forming properties of the system, confirmed by spectroscopic measurements. The polymerization of both monomers was influenced by the kind of the α-alkyl group of the α-amino acid esters, but it was not affected by the kind of the ester groups. The carboxylic group of the esters was found to affect only the polymerization of methyl methacrylate. Based on the results, the character of the free radicals was discussed.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/macp.1973.021660116
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  • 8
    Electronic Resource
    Electronic Resource
    Vinyl polymerization by metal complexes, 14Part 13: T. Okimoto, M. Takahashi, Y. Inaki, K. Takemoto, J. Polymer Sci., Letters Ed. 12, 121 (1974).. Synthesis of 2-substituted and 2,4-disubstituted imidazole-copper(II) complexes as initiator systems for vinyl polymerization (1974)
    New York : Wiley-Blackwell
    Die Makromolekulare Chemie 175 (1974), S. 2047-2053 
    Details
    ISSN: 0025-116X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: Eine Reihe von Kupfer(II)komplexen vom Typ CuL4X2 (L: Ligand und X: Anion) der substituierten Imidazole 2-äthyl- (1a), 2-äthyl-4-methyl- (1b), 2-Phenyl- (1c), 2-Undecyl- (1d) sowie 2-Heptadecylimidazol (1e) wurde hergestellt. Ihre Strukturen wurden durch Elementaranalyse, Reflexionsspektren der Kristalle und IR-Spektroskopie bestätigt. Die Polymerisation von Acrylnitril wurde in Gegenwart dieser Imidazol-Kupfer(II)komplexe in Dimethylsulfoxid-Lösung untersucht.
    Notes: A series of the copper(II) complexes of the type CuL4X2 (L: ligand, X: anion) was prepared with the following substituted imidazoles as ligands 2-ethyl- (1a), 2-ethyl-4-methyl- (1b), 2-phenyl- (1c), 2-undecyl- (1d), and 2-heptadecylimidazole (1e). The structures of these complexes were confirmed by elemental analysis, reflection spectra of the crystals as well as IR-spectroscopy. Polymerization of acrylonitrile was tested in the presence of each imidazole-copper(II) complex in dimethyl sulfoxide solution.
    Additional Material: 3 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/macp.1974.021750709
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  • 9
    Electronic Resource
    Electronic Resource
    Vinyl polymerization by metal complexes, 19Part 18, cf.14.. Formation of copper(II) chelates of vinylamine/vinyl alcohol copolymers (1975)
    New York : Wiley-Blackwell
    Die Makromolekulare Chemie 176 (1975), S. 2225-2239 
    Details
    ISSN: 0025-116X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: Die Chelatbildung der Vinylamin/Vinylalkohol-Copolymeren mit Kupfer(II)ionen wurde sowohl spektrophotometrisch als auch titrimetrisch untersucht. Zum Vergleich wurden weiterhin Gemische aus Polyvinylamin und Polyvinylalkohol vermessen. Es ergab sich, daß die Kupfer(II)ionen im Falle der Copolymersysteme ausschließlich von den Stickstoffatomen des Copolymerliganden koordiniert werden. Die Komplexierungskonstanten der Chelate wurden durch Anwendung der modifizierten Bjerrumschen Methode - unter Vernachlässigung der Säuredissoziation der Copolymer-Hydroxygruppen - bestimmt. Es ergab sich. daß die Copolymer/Kupfer(II)chelate mit abnehmendem Gehalt an NH2-Gruppen in den Copolymeren instabiler werden. Im Falle der Homopolymer-Gemische werden die Kupfer(II)ionen nur von den Stickstoffatomen des Polyvinylamins, nicht aber von den Sauerstoffatomen des Polyvinylalkohols koordiniert.
    Notes: Chelate formation of vinylamine/vinyl alcohol copolymers with copper(II) was studied both by the spectrophotometric and by titrimetric methods. For comparison, polyvinylamine/poly(vinyl alcohol) mixtures were also taken up for measurements. In the case of the copolymer systems, copper(II) ions were found to be coordinated exclusively by nitrogen atoms of the copolymer ligand. The complexation constants of the chelates were determined by applying the modified Bjerrum method, in neglect of the acid dissociation of hydroxy groups in the copolymers. It was found that the copolymer/Cu(II) chelates tend to be unstable with decreasing contents of NH2 groups in the copolymers. In the homopolymer mixture systems, copper(II) ions are not coordinated by the oxygen atoms of poly(vinyl alcohol), but only by the nitrogen atoms of polyvinylamine.
    Additional Material: 11 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/macp.1975.021760805
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  • 10
    Electronic Resource
    Electronic Resource
    Funktionelle Monomere und Polymere, 2827. Mitt.: siehe K. Kondo, M. Koishi, K. Takemoto, Techn. Repts. Osaka Univ., im Druck.. Synthese und Polymerisation von nucleinbasenhaltigen Styrolderivaten (1975)
    New York : Wiley-Blackwell
    Die Makromolekulare Chemie 176 (1975), S. 3505-3509 
    Details
    ISSN: 0025-116X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Additional Material: 3 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/macp.1975.021761133
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