XCage:在水中具有 Picomolar Affinity 的三环八化受体
Wenqi Liu1, Sharan Bobbala2, Charlotte L Stern1
1Department of Chemistry , Northwestern University , 2145 Sheridan Road , Evanston , Illinois 60208 , United States.
Journal of the American Chemical Society
|January 17, 2020
概括
研究人员设计了一种新型合成受体, 这一突破可以提高光学性能和细胞成像应用.
科学领域:
- 超分子化学
- 材料科学
- 化学生物学
背景情况:
- 在水性环境中设计高亲和度结合的合成受体具有挑战性.
- 在敏感的分子识别中,达到皮科莫尔结合亲和度至关重要.
- 光染料如二胺被广泛使用,但需要特定的结合伙伴来进行高级应用.
研究的目的:
- 在水中合成一种新型合成受体,
- 研究结合机制和热力学驱动力.
- 在光学应用和细胞成像中探索受体染料复合物的实用性.
主要方法:
- 一个三环八度环受体的合成.
- 用水溶液中的二胺结合性研究.
- 结合亲和度 (皮科摩尔范围) 和热力学 (和) 的表征.
- 复合后光学特性变化的光谱分析.
- 使用该复合体独特的光学特性进行细胞成像.
主要成果:
- 一种新型的三环八年周期旋被成功合成.
- 该受体表现出对水中的二胺的皮科摩尔结合亲和力.
- 复杂化是由有利的和轻微的正驱动的.
- 受体-二胺复合体表现出增强的光学特性:红移吸收/发射,启动光,以及高效的能量传输.
- 单激发,双发射成像成功实现了活细胞.
结论:
- 开发的合成受体能够在水中结合超高亲和度.
- 受体染料复合体提供了显著改善和可调节的光学特性.
- 这种系统有望在化学传感和生物成像方面的先进应用.
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