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  • 1
    ISSN: 0022-2860
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Bioorganic Chemistry 13 (1985), S. 88-97 
    ISSN: 0045-2068
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Colloid & polymer science 254 (1976), S. 532-533 
    ISSN: 1435-1536
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Colloid & polymer science 256 (1978), S. 1032-1033 
    ISSN: 1435-1536
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Colloid & polymer science 232 (1969), S. 693-699 
    ISSN: 1435-1536
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Summary The solubilities of azobenzene derivatives in water have been determined at 5 °C intervals from 0° to 40 °C to obtain the information both about the effect of polar groups on the solubility of aromatic compounds in water and about the action of polar groups to the iceberg-formation in the vicinity of hydrophobic part of the solute in water environment. From the results the imaginary super cooled pure liquid has been taken as a standard state and the thermodynamic parameters of solution of azobenzene derivatives in water have been calculated.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Colloid & polymer science 251 (1973), S. 159-162 
    ISSN: 1435-1536
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Zusammenfassung Die Adsorptionsisothermen von mehrbasischen Säurefarbstoffen (zwei dibasische Farbstoffe und zwei tribasische Farbstoffe) an Nylonfasern von dreierlei Art bei konstantem pH (3.5) wurden bei 90 °C bestimmt. Die Nylonfasern Nylon-1, −2 und −3 ergeben bei Aminogruppenanalysen Werte von 25, 54 und 95 mäqu/kg. Aus Adsorptionsisothermen wurden die Sättigungswerte für diese Farbstoffe auf jeder Art Nylonfaser berechnet. Für die dibasischen Farbstoffe wurden die Sättigungswerte auf jeder Nylonfaser sehr nahe dem Aminogehalt in der Faser gefunden. Das zeigt, daß diese Farbstoffe auf den Nylonfasern stoichiometrisch adsorbiert werden. Bei den tribasischen Farbstoffen wurde das stöchiometrische Verhalten nur auf Nylon-3 gefunden. Die Abstände zwischen den Aminogruppen in jeder Nylonfaserart wurde näherungsweise berechnet. Aus dem Molekülmodell des Farbstoffes stellt sich heraus, daß der Abstand zwischen den Sulfonsäuregruppen im Farbstoffmolekül viel kürzer als der zwischen irgendwelchen Aminogruppen in der Faser ist. Deshalb wird eine H9O4 +-Brücken-Hypothese vorgeschlagen, um zu klären, wie ein mehrbasischer Farbstoff feste Plätze physikalisch absättigen kann.
    Notes: Summary The adsorption isotherms of polybasic acid dyes (two dibasic dyes and two tribasic dyes) on three kinds of nylon fibers at constant pH (3.5) have been determined at 90 °C. The nylon fibers, Nylon-1, −2 and −3 had amino group analyses of 25, 54 and 95 meq/kg, respectively. From the adsorption isotherms the saturation value of the dyes on each nylon fiber was calculated. For the dibasic dyes, the saturation value on each nylon fiber was very near the amino group content of the fiber. This indicates that these dyes are adsorbed stoicheiometrically on each nylon fiber. For the tribasic dyes, the stoichiometric behavior was observed only on Nylon-3. A crude calculation was made of the distance between amino groups in each nylon fiber. It was seen from the scale model of the dyes that the distance of sulfonic acid groups in the dye molecule is much smaller than that of amino groups in the fiber. The H9O4 + bridge hypothesis was proposed in order to explain how a polybasic dye can physically saturate fixed sites.
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Colloid & polymer science 252 (1974), S. 177-177 
    ISSN: 1435-1536
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    Colloid & polymer science 226 (1968), S. 153-157 
    ISSN: 1435-1536
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Zusammenfassung Zwei optisch aktive organische Säuren wurden aus D- und L-Alanin synthetisiert und ihr Bindungsverhalten an Rinder-Serum-Albumin geprüft. In der Untersuchung fanden wir, daß die D-Form der Verbindungen, die an das Albumin gebunden werden, sich stärker anlagern als die L-Form innerhalb eines pH-Bereichs von 5,0 bis 8,0. Im pH-Gebiet 4,0 jedoch konnten wir keinen Unterschied zwischen dem Verhalten der beiden optischen Isomeren feststellen. Die spektralen Untersuchungen lassen schließen, daß die D-Form fester mit dem Albumin verbunden ist als die L-Form.
    Notes: Summary Two optically active organic acids were synthesized from D- and L-alanine and we studied their binding behaviors with bovine serum albumin. In the investigation we found that the D-form of the compounds bound with the albumin more than did the L-form within the range of pH 5.0 to pH 8.0 At pH 4.0, however, we did detect no difference in the binding between the optical isomers. The spectral study led to a conclusion that D-form bound with albumin more tightly than L-form did.
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    Colloid & polymer science 232 (1969), S. 699-703 
    ISSN: 1435-1536
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Summary The solubility of azobenzene in water and aqueous alcohol solutions was determined at 5 °C intervals from 0° to 40 °C. Prom the results the thermodynamic parameters for the transfer of one mole of azobenzene from water to aqueous alcohol solution were calculated. It was found that the process was endothermic: furthermore, it was invariably accompanied by a positive unitary entropy change. The solubilizing mechanism of alcohols was explained in terms of an adduct-formation with the compound to be dissolved by means of hydrophobic interaction.
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  • 10
    Electronic Resource
    Electronic Resource
    Springer
    Colloid & polymer science 232 (1969), S. 689-693 
    ISSN: 1435-1536
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Summary The solubilities of the following compounds in an aqueous sodium dodecyl sulfate solution were determined at 25°, 30°, 35° and 40°C: biphenyl, azobenzene, p-chloroazobenzene, p-aminoazobenzene, p-N,N-dimethylaminoazobenzene and p-nitroazobenzene. From the results the thermodynamic parameters for the transfer of the model compounds from water to SDS micellar environment were calculated. The resulting thermodynamic parameters were not so certain, but suggested that with biphenyl, azobenzene and p-chloroazobenzene which seem to be solubilized in the SDS micellar interior the solubilizing process is a result of a favourable increase in entropy, and that with p-aminoazobenzene, p-N, N-dimethylaminoazobenzene and p-nitroazobenzene which seem to be solubilized in the SDS micellar surface the solubilizing process is a result of a favourable decrease in enthalpy. The favourable increase in entropy was explained in terms of iceberg and the favourable decrease in enthalpy in terms of interfacial energy.
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