准备基于共价有机框架的静止相的多元组件策略,用于高分辨率分离异构体
Wen-Chao Deng1, Hai-Long Qian1, Cheng Yang2
1Institute of Analytical Food Safety, School of Food Science and Technology, Jiangnan University, Wuxi, 214122, China; Key Laboratory of Screening, Prevention, and Control of Food Safety Risks, State Administration for Market Regulation, Wuxi, 214122, China; International Joint Laboratory on Food Safety, Jiangnan University, Wuxi, 214122, China.
通过多元组件策略使共价有机框架 (COF) 发挥功能,可以增强气体染色学静止相. 这种方法提高了异构体分离和速度,为高性能COF材料提供了一条新的途径.
科学领域:
- 材料科学 材料科学 材料科学
- 分析化学 分析化学
- 化学工程是化学工程的重要组成部分.
背景情况:
- 共价有机框架 (COFs) 的功能化是开发高分辨率气色谱 (GC) 静止相的关键.
- 现有的COF静止相通常需要针对特定的分离挑战进行优化.
- 需要可控制的功能化策略来为高级GC应用调整COF属性.
研究的目的:
- 开发一种简单可控的多元组件策略,用于使COF静止相功能化.
- 调查加入第三个单体对基于COF的GC静止相的分离性能的影响.
- 为挑战性异构体展示增强的高分辨率分离能力.
主要方法:
- 从1,3,5-tris(4-aminophenyl) (Tab) 和2,5-dihydroxy-1,4-benzenedicarboxaldehyde (DHTA) 中制造一个模型的COF (Tab-DHTA).
- 将2,5-dimethoxyterephthalaldehyde (DMTA) 作为第三个单体纳入COF结构,以创建三组分COF (Tab-DHTA-(DMTA) x%).
- 调整DMTA含量以平衡结和范德瓦尔斯相互作用,然后进行GC性能评估.
主要成果:
- 三个组成部分的COF,Tab-DHTA-(DMTA) <50%,实现了高分辨率的乙烯酸异构体的分离 (R > 1.5,23021-29796板 m-1),这是二进制COF无法实现的.
- 与原来的Tab-DHTA相相比,功能化的COF维持甚至改善了其他异构体 (二二,二,二,1,3-二二,二) 的分离.
- 分离速度也得到了提高,这归因于DMTA引入的平衡相互作用.
结论:
- 多组件策略提供了一种可控制的方法,用于设计具有定制性质的COF静止相.
- 将DMTA引入COF结构有效地平衡了键和范德瓦尔斯相互作用,从而获得了卓越的染色学性能.
- 这种方法为开发基于COF的先进静止相提供了一条新途径,用于高性能气相色谱.
更多相关视频
08:42Microfluidic-based Synthesis of Covalent Organic Frameworks COFs: A Tool for Continuous Production of COF Fibers and Direct Printing on a Surface
Published on: July 10, 2017
10:27Preparation of Highly Porous Coordination Polymer Coatings on Macroporous Polymer Monoliths for Enhanced Enrichment of Phosphopeptides
Published on: July 14, 2015
相关概念视频
Optimizing Chromatographic Separations
Band broadening refers to spreading solute bands as they travel through the column. This broadening can impact resolution. Plate height (H) represents the length required for one theoretical plate. A lower plate height corresponds to...
Chromatography: Introduction
The phase in which the compounds linger or on which the compounds adsorb is called the stationary phase, whereas the mobile phase is the solvent that carries the solutes to be analyzed. In traditional column chromatography, the mixture flows through the stationary phase, and the compounds partition between the stationary and mobile phases...
High-Performance Liquid Chromatography: Introduction
In HPLC, two phases play a critical role in the separation process:
Silica Gel Column Chromatography: Overview
Polar components tend to bind strongly to the silica gel, causing them to move slowly through the column. In contrast, nonpolar compounds...
High-Performance Liquid Chromatography: Elution Process
Supercritical Fluid Chromatography
SFC utilizes a supercritical fluid mobile phase,...
