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在树脂烯溶液中形成染色体,并可视检测单糖和寡糖

Ming He¹, Rolanda J Johnson, Jorge O Escobedo

¹Department of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70803, USA.

Journal of the American Chemical Society

|May 2, 2002

概括

Resorcinarene宏循环产生颜色,并与糖化物改变色调,使其能够进行视觉检测. 这种颜色变化是由于宏循环环开放,氧化和糖复杂化与非循环染色体.

科学领域:

超分子化学超分子化学
分析化学分析化学
有机化学有机化学

背景情况:

自从初始合成以来,酸溶液的色度特征在很大程度上尚未被探索.
最近的发现表明,溶液中的酸宏循环在加热或置时会产生颜色.
显著的,视觉上明显的颜色变化发生在糖的存在下.

研究的目的:

为了研究在酸溶液中颜色发育背后的机制.
探索这些溶液对糖的光学反应.
应用机械洞察力,用于视觉检测中性寡糖.

主要方法:

谱分析用于研究色度学性质.
研究宏观周期的稳定性和转变 (环开放,氧化).
进行X射线晶体学,用于树脂烯立体异构体的结构性测定.

主要成果:

强有力的证据表明,溶液颜色是由宏环环开放和氧化引起的.
对糖类的光学反应归因于糖和非循环染色体之间的复杂化.
确定了第一个罕见的"钻石"树脂烯立体异构体的单晶X射线结构.

结论:

树脂烯溶液表现出由宏循环环开放和氧化驱动的色度变化.
这些解决方案为中性寡糖的视觉检测提供了一个有前途的平台.
通过对一种独特的resorcinarene立体同位素的表征,获得了结构性见解.

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However, the stretching absorptions for the C=O bond vary depending on the structure of carboxylic acids. The C=O bond of the free carboxylic acids shows a higher stretching frequency, 1760 cm−1, while H-bonded carboxylic acids (dimers) exhibit stretching absorptions at a lower frequency, 1710 cm−1. The C=O bond of the...