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首页> 外文期刊>Advanced Sustainable Systems >The Rapid Mechanochemical Synthesis of Microporous Covalent Triazine Networks: Elucidating the Role of Chlorinated Linkers by a Solvent‐Free Approach
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The Rapid Mechanochemical Synthesis of Microporous Covalent Triazine Networks: Elucidating the Role of Chlorinated Linkers by a Solvent‐Free Approach

机译：微孔共价三嗪网络的快速机械化学合成：无溶剂法阐明氯化连接剂的作用

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摘要

Abstract The mechanochemical synthesis of porous covalent triazine networks (CTNs), exhibiting theoretically ideal C/N ratios and high specific surface areas, is presented. Employing this solvent‐free approach allows to minimize the ecological impact of the synthesis by bypassing hazardous wastes, while simultaneously observing the reactions between the individual starting materials separately for the first time. Especially the role of dichloromethane needs to be reconsidered, functioning as a linker between the nitrogen‐containing node cyanuric chloride and the aromatic monomer 1,3,5‐triphenylbenzene, as proven by X‐ray photoelectron spectroscopy and 1H → 13C Cross‐Polarization magic‐angle‐spinning nuclear magnetic resonance spectroscopy. This results in a drastic enhancement of the reaction rate, reducing the synthesis time down to 1 minute. Additionally, this linkage over a C1 bridge enables the incorporation of nitrogen into already synthesized polymers by post polymerization functionalization. The variation of the synthesis building blocks, namely the linker, node, and monomer, results in a variety of nitrogen‐containing polymers with specific surface areas of up to 1500 m2 g−1. Therefore, the presented approach is capable to target the synthesis of various CTNs with a minimal use of chlorinated linker, rendering the concept as a sustainable alternative to the classical solution‐based synthesis.
机译：摘要多孔的机械化学的合成共价三嗪网络(卡通),展出理论上理想的C / N比率和高具体表面区域。溶剂量免费方法允许最小化绕过合成的生态影响危险废物,同时观察个人之间的反应开始材料分别为第一次。尤其是二氯甲烷的角色需要被重新考虑,功能之间的链接三聚氰酰氯氮量包含节点芳香族单体1、3、5高triphenylbenzeneX射线光电子能谱和证明1 h→13 c交叉极化应承担的魔法量角旋转核磁共振光谱。导致激烈的反应的增强率,减少合成时间到1分钟。使氮的渗入到桥梁已经合成聚合物聚合功能化。合成的构建块,即链接器、节点和单体,结果在一个品种含氮量与特定的聚合物1500平方米的表面积g−1。提出的方法是目标的能力合成各种卡通的最小使用氯化链接器,使作为一个概念可持续的替代经典解决方案为基础的合成。

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