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通过选址合成策略调整二维共价有机框架的拓

Xueying Wu¹, Xihao Tang¹, Kai Zhang¹

¹GDMPA Key Laboratory for Process Control and Quality Evaluation of Chiral Pharmaceuticals, and Guangzhou Key Laboratory of Analytical Chemistry for Biomedicine, School of Chemistry, South China Normal University, Guangzhou, 510006, China.

Chemistry (Weinheim an der Bergstrasse, Germany)

|January 10, 2024

概括

研究人员开发了一种新方法,通过调整单体比来控制二维共价有机框架 (COF) 的结构. 这种调整显著改善了有机染料的吸附性,特别是在胺基功能化COF中.

科学领域:

材料科学材料科学材料科学
超分子化学超分子化学
纳米技术纳米技术

背景情况:

调整二维 (2D) 共价有机框架 (COF) 的拓对于高级应用至关重要,但仍然具有挑战性.
现有的合成策略对COF架构的控制有限.

研究的目的:

为控制二维COF拓开发一个选址合成策略.
调查COF拓和功能组对有机染料吸附的影响.

主要方法:

通过调整氨基功能化二化物 (NH2-Ah) 和4,4',4''-(1,3,5-三-2,4,6-三) 三甲 (Tz) 单体的摩尔比率,利用选择性合成.
对结晶性和多孔性的结果COF进行了表征.
评估了合成的COFs对水晶紫色 (CV) 和刚果红色 (CR) 染料的吸附能力.

主要成果:

成功合成了两种不同的二维COF:一种类似于三叶草的NH2-Ah-Tz,具有自由氨基群,一种类似于蜂的Ah-Tz,没有氨基群.
两种COF均表现出良好的结晶性和中等孔隙性.
与Ah-Tz COF相比,富含氨基的NH2-Ah-Tz COF对CV (261 mg/g) 和CR (1560 mg/g) 的吸附能力显著更高 (CV为123 mg/g,CR为1340 mg/g).

结论:

选址合成策略通过控制单体料比率,有效调整2D COF拓.
自由氨基的功能组在提高有机染料中COF的吸附性能方面发挥着关键作用.
这种方法为设计具有针对色素去除定制性质的COF提供了一条新的途径.

关键词:

共价有机框架是共价有机框架.有机染料去除有机染料去除选择地点的综合战略.拓控制的拓控制方式

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