在奇拉Au纳米颗粒上进行enantioselective分离
Nisha Shukla1, Melissa A Bartel, Andrew J Gellman
1Institute of Complex Engineered Systems and Department of Chemical Engineering, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA.
Journal of the American Chemical Society
|June 5, 2010
概括
基拉尔黄金纳米颗粒与氨酸酶基因改性选择性吸附氧化物酶基因. 光学旋转测量显示了增强的吸附,使得能够确定选平衡常数.
科学领域:
- 纳米技术 纳米技术
- 奇拉化学 奇拉化学
- 表面科学是一门学科.
背景情况:
- 化学合成的金纳米颗粒 (Au NPs) 可以功能化以表现出奇拉性.
- 嵌合体表面对于与嵌合体分子的酶选择性相互作用至关重要.
- 光学旋转是一种敏感的技术,用于探测奇拉环境.
研究的目的:
- 使用d-和l-氨酸修饰制造奇拉黄金纳米粒子.
- 为了研究氧化对这些性Au NPs的enantioselective吸附.
- 用光学旋转和一个开发的模型来量化 enantioselective 吸附.
主要方法:
- 金纳米颗粒的合成.
- 用d-或l-氨酸对AuNP进行表面修改.
- 氧化溶液的光学旋转测量暴露于奇拉 Au NPs.
- 一个模型的开发,以提取enantioselective吸附平衡常量.
主要成果:
- 经过氨酸修饰的Au NPs显示了氧化的对抗选择性吸附.
- 光学旋转测量显示在纳米粒子相互作用时增强了特定旋转.
- 选择性吸附 (R) - 氧化物的l-氨基基基改性AuNP和吸附 (S) - 氧化物的d-氨基基改性AuNP.
- 一个模型成功地提取了用于吸附的enantioselective平衡常数.
结论:
- 黄金纳米颗粒与氨酸功能化表现出显著的氧化吸附的反选择性.
- 光学旋转是一种有效的方法来检测和量化在奇拉纳米颗粒上的enantioselective吸附.
- 开发的模型提供了一个定量理解的enantioselective吸附过程.
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