Phase transition of N-acyl amino acids with different acyl group.

スポンサーリンク

概要

• 論文の詳細を見る

• The solid-liquid phase transitions of <I>N</I>-acyl amino acids with different acyl groups were investigated using a differential scanning calorimeter and an infrared spectrophotometer. The enthalpy and entropy changes of the transition increased by 3–5 kJ mol<SUP>−1</SUP> and 8–10 J K<SUP>−1</SUP>mol<SUP>−1</SUP>, respectively, for an additional methylene group in <I>N</I>-acylglycine, and 7 kJ mol<SUP>−1</SUP> and 18 J K<SUP>−1</SUP>mol<SUP>−1</SUP>, respectively, in the <I>N</I>-acyl-L,-alanine series. The same thermodynamic quantities of <I>N</I>-acylvalines were only slightly dependend on the acyl chain length, while they varied irregularly for the <I>N</I>-acylleucine series. Both the enthalpy and entropy were smaller for the L-form than for its racemic isomer in the <I>N</I>-acylleucines (C<SUB>12</SUB> and above) and <I>N</I>-acylvalines. The differences of the thermodynamic quantities between the L- and DL-forms seems to result mainly from the difference of the molecular packing in the solid state.

• 公益社団法人 日本化学会の論文

著者

• Asakawa Tsuyoshi

  Department Of Chemistry And Chemical Engineering Faculty Of Engineering Kanazawa University

• Miyagishi Shigeyoshi

  Department Of Chemistry And Chemical Engineering Faculty Of Engineering Kanazawa University

• Matsumura Seiichi

  Department Of Physics Gakushuin University

• Nishida Morie

  Department of Industrial Chemistry, Faculty of Technology, Kanazawa University

関連論文

• Micellar Counterion Binding for Alkylpyridinium Iodides Probed by N-Sulfopropylacridinium Fluorescence Quenching
• High-Energy X-ray Diffraction Study of Liquid Structure of Metallic Glass-Forming Zr_Cu_ Alloy
• Critical Demicellization Concentration of Diethylammonium Perfluorononanoate and Diethylammonium Tetradecyl Sulfate Mixture in Aqueous Solution
• Fluorescence Quenching of Quinoline Derivatives in a Micelle System
• 炭化フッ素-炭化水素系混合ミセル中の1,1,2,2-テトラヒドロヘプタデカフルオロデシルピリジニウムクロリドによるピレン蛍光の消光挙動
• Microviscosity and Micellar Phase Diagrams Determined with Fluorescence Probes
• The Micelle Formation of Alkylammonium Chloride in 1-Propanol–Water and Acetone–Water Mixtures
• Phase transition of N-acyl amino acids with different acyl group.
• Phase diagrams in binary systems of octafluoronaphthalene and polynuclear aromatic compounds.
• Calorimetric investigation of N-acyl amino acids.
• The Effect of Organic Additives on the Micelle Formation of Dodecylammonium Halides in Aqueous Solutions

もっと見る 閉じる

スポンサーリンク