替代剂对水溶性cryptophanes的异结合亲和力和溶液行为的影响
P Aru Hill1, Qian Wei, Thomas Troxler
1Department of Chemistry, Biotechnology Laboratories, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA.
Journal of the American Chemical Society
|February 26, 2009
概括
研究人员开发了一种新的水溶性加密-A衍生物 (TAAC),具有有史以来最高的结亲和力. 这一发现推动了宿主-客化学和传感应用.
科学领域:
- 超分子化学 超分子化学
- 主机和客人的化学反应
- 化学传感器 化学传感器
背景情况:
- 加密-A衍生品以其宿主-客客复合特性而闻名.
- 开发水溶性衍生物对于生物和环境应用至关重要.
- 了解溶液中的客结合和构造性行为是关键.
研究的目的:
- 合成和表征一种新的水溶性加密-A衍生物,三酸加密-A (TAAC).
- 量化TAAC的结亲和力,并将其与现有的宿主分子进行比较.
- 研究TAAC在水性环境中的溶液行为和形态动态.
主要方法:
- 异热定位热量计 (ITC) 用于结合亲和度的确定.
- 光灭试验用于研究客人的互动.
- 光寿命测量以探测结合机制.
- 酸定位和水性核磁共振 (NMR) 光谱用于结构分析.
主要成果:
- 在TAAC的表现中,Xenon的关联常数为33000M-1在293K,这是创纪录的.
- 光数据表明,静态火由和第二个不结合的调节器的存在.
- 核磁共振研究表明,TAAC存在于水溶液中的皇冠-皇冠和皇冠-形状,与TTPC不同,它只显示了皇冠-皇冠形式.
- 碳酸盐离子的溶解显著影响了这些大型,非极性密码体的水性行为.
结论:
- 在异结合的宿主-宿客复合中,TAAC代表了一个新的基准.
- 该研究强调了功能组溶解对水中的加密衍生物的构造偏好的影响.
- 这些发现对先进的分子识别系统和传感器的设计有影响.
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