相关实验视频

Updated: Jun 13, 2025

Microfluidic-based Synthesis of Covalent Organic Frameworks COFs: A Tool for Continuous Production of COF Fibers and Direct Printing on a Surface

Microfluidic-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

为光催化有机转化进行1D氨酸-甲醇共价有机框架的结构工程

Jiaying Li¹, Bangying Zhang¹, Wenhua Xu¹

¹Northwest University, Key Laboratory of Synthetic and Natural Functional Molecule of Ministry of Education, College of Chemistry & Materials Science, No. 1, Xuefu Avenue, Guodu Educational Technology Industry Zone, Chang'an Distri, Xi'an, CHINA.

Chemistry (Weinheim an der Bergstrasse, Germany)

|June 12, 2025

概括

我们使用氨酸和碳醇单位设计了新的一维共价有机框架 (1D COF). 这些先进材料表现出增强的光催化活性,用于可持续的有机合成.

科学领域:

材料科学材料科学材料科学
有机化学有机化学
催化剂是一种催化剂.

背景情况:

一维的共价有机框架 (1D COFs) 显示出光催化作用的前景.
在设计1D COF以实现高效的电荷转移方面存在挑战.

研究的目的:

开发一系列新的1D氨酸-碳素基COFs (MPor-Phn-CZ).
研究结构-属性关系以提高光催化性能.

主要方法:

对称导向的希夫基凝结用于COF合成.
光电子表征和密度函数理论 (DFT) 计算.
在氨酸氧化和脱反应中测试光催化活性.

主要成果:

H2Por-Ph-CZ表现出一个被遮蔽的AA堆叠模式,具有高结晶度和表面积.
观察到增强的可见光吸收和最小化的电荷重组.
证实了从碳醇供体到氨酸受体的定向电子转移.
与同类药物相比,H2Por-Ph-CZ显示出更高的光催化活性.

结论:

通过拓学和电子调制,为1D COFs制定了设计策略.
开发的1DCOF显示了可持续有机合成应用的潜力.

关键词:

1D COFs 的使用情况有机转化有机转化光催化作用的光催化氨酸是氨酸中的一种.碳醇是碳化合物中的一种.

更多相关视频

A Technical Guide for Performing Spectroscopic Measurements on Metal-Organic Frameworks

A Technical Guide for Performing Spectroscopic Measurements on Metal-Organic Frameworks

Published on: April 28, 2023

Synthesis of Single-Crystalline Core-Shell Metal-Organic Frameworks

Synthesis of Single-Crystalline Core-Shell Metal-Organic Frameworks

Published on: February 10, 2023

相关概念视频

Photochemical Electrocyclic Reactions: Stereochemistry

Photochemical Electrocyclic Reactions: Stereochemistry

The absorption of UV–visible light by conjugated systems causes the promotion of an electron from the ground state to the excited state. Consequently, photochemical electrocyclic reactions proceed via the excited-state HOMO rather than the ground-state HOMO. Since the ground- and excited-state HOMOs have different symmetries, the stereochemical outcome of electrocyclic reactions depends on the mode of activation; i.e., thermal or photochemical.
Selection Rules: Photochemical Activation

Thermal and Photochemical Electrocyclic Reactions: Overview

Thermal and Photochemical Electrocyclic Reactions: Overview

Electrocyclic reactions are reversible reactions. They involve an intramolecular cyclization or ring-opening of a conjugated polyene. Shown below are two examples of electrocyclic reactions. In the first reaction, the formation of the cyclic product is favored. In contrast, in the second reaction, ring-opening is favored due to the high ring strain associated with cyclobutene formation.