...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>The journal of physical chemistry, A. Molecules, spectroscopy, kinetics, environment, & general theory >Kinetic Approach for the Study of Noncovalent Interaction between[Ru(NH3)5pz]~(2+)and Gold Nanoparticles
【24h】

Kinetic Approach for the Study of Noncovalent Interaction between[Ru(NH3)5pz]~(2+)and Gold Nanoparticles

机译：[Ru（NH3）5pz]〜（2+）与金纳米粒子非共价相互作用的动力学研究

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Gold nanoparticles(AuNPs)capped with N-(2-mercaptopropionyl)glycine have been used to study the strength and character of the binding of a cationic metal complex,[Ru(NH3)5pz]~(2+)(pz=pyrazine),at pH=8,to these nanoparticles.The strength of the binding has been studied using a kinetic approach consisting of the study of the kinetics of the oxidation of this ruthenium complex by S2O_8~(2-)at different NaCl concentrations.When the ionic strength increases,the strength of the binding decreases,as a consequence of the partial neutralization of the charge on the AuNPs which,at pH=8,has the tiopronin residue negatively charged.The increase of the ionic strength also produces a change in the character of the binding,which changes from anticooperative to noncooperative when the ionic strength increases.The nonelectrostatic and electrostatic components of the free energy of binding are determined.From the latter,we have obtained the values of the electrostatic potential differences at the AuNPs/solutions interface.
机译：N-（2-巯基丙酰基）甘氨酸包覆的金纳米颗粒（AuNPs）已用于研究阳离子金属配合物[Ru（NH3）5pz]〜（2 +）（pz =吡嗪）的结合强度和特征在pH = 8的条件下，这些纳米粒子的结合强度已通过动力学方法研究。该方法包括研究钌配合物在不同NaCl浓度下被S2O_8〜（2-）氧化的动力学。离子强度增加，结合强度降低，这是由于AuNPs上的电荷部分中和的结果，在pH = 8时，硫普罗宁残基带负电。结合的特性，当离子强度增加时，从反合作变为非合作。确定结合自由能的非静电和静电成分。从后者，我们获得了AuNPs /上的静电势差值。解决方案界面。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号