Department of Chemistry & Biochemistry, University Station-A5300, The University of Texas, Austin, Texas 78712-0165, United States.
J Am Chem Soc. 2010 Nov 24;132(46):16617-22. doi: 10.1021/ja107471x. Epub 2010 Nov 2.
The on and off rates corresponding to the binding of two test anions (acetate, AcO(-), and dihydrogen phosphate, H(2)PO(4)(-), studied as their tetrabutylammonium salts) to diprotonated cyclo[8]pyrrole have been determined in CH(3)CN using stopped-flow analyses carried out at various temperatures. For dihydrogen phosphate, this afforded the activation enthalpies and entropies associated with both off and on processes. The different dynamic behavior seen for these test anions underscores the utility of kinetic analyses as a possible new tool for the advanced characterization of anion receptors.
已经在 CH(3)CN 中使用各种温度下进行的停流分析来确定与二质子化环[8]吡咯结合的两种测试阴离子（乙酸盐，AcO(-)和磷酸二氢盐，H(2)PO(4)(-)，作为其四丁基铵盐研究）的结合和解离速率常数。对于磷酸二氢盐，这提供了与解吸和结合过程相关的活化焓和熵。这些测试阴离子的不同动态行为突出了动力学分析作为阴离子受体的高级特性的新工具的潜力。
