pH Effect on the enthalpic interaction coefficients of N-glycylglycine with protocatechuic acid in the phosphate Buffer Solutions
作者单位：School of Chemistry and Chemical Engineering Liaocheng University
会议名称：《第十七届全国化学热力学和热分析学术会议》
会议日期：2014年
学科分类：081704[工学-应用化学] 07[理学] 070304[理学-物理化学(含∶化学物理)] 08[工学] 0817[工学-化学工程与技术] 0703[理学-化学]
基 金：Financial support was provided by the National Natural Science Foundation of China (No. 21103079)
关 键 词：N-glycylglycine protocatechuic acid phosphate buffer solutions pH value mixing enthalpy enthalpic interaction coefficients
摘 要：Protocatechuic acid plays an important role in the process of killing diseased cells[1-2].The research on the application of protocatechuic acid has attracted a great deal of the *** mixing enthalpies of N-glycylglycine with protocatechuic acid in phosphate buffer solutions at different p H value have been measured by means of mixing-flow isothermal microcalorimetry at the temperature of 298.15 *** heterotactic enthalpic interaction coefficients（hxy,hxxy,and hxyy）in the p H range（3.0 to 8.0）of the buffer solutions have been calculated according to the Mc Millan–Mayer *** results showed that with the increase of the p H value,heterotactic enthalpic pairwise interaction coefficients hxy between N-glycylglycine and protocatechuic acid pass through a minimum at p H *** results are interpreted in terms of the solute-solute and solute-solvent interactions.