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Updated: Jul 30, 2025

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电化学合成多硫化物

Jasmine M M Pople¹, Thomas P Nicholls¹, Le Nhan Pham¹

¹Institute for Nanoscale Science and Technology, College of Science and Engineering, Flinders University, Bedford Park, South Australia 5042, Australia.

Journal of the American Chemical Society

|May 17, 2023

概括

研究人员开发了一种使用电化学合成高硫聚合物的安全可控方法. 这种新技术可以产生具有可调节性质的精确聚合物,适用于金属回收应用.

科学领域:

聚合物化学
材料科学
电化学

背景情况:

越来越多的高硫聚合物需求需要更安全,更可控的合成方法.
像反向火山化这样的现有方法往往需要高温和危险的启动器.

研究的目的:

为明确的高硫聚合物开发一种新,安全和可控的合成途径.
研究合成聚合物的结构性质和潜在应用.

主要方法:

基于norbornene的循环三硫化单体的电催化环开聚合.
密度函数理论 (DFT) 的计算以阐明反应机制.
热重量测量分析 (TGA) 与质谱学 (MS) 结合用于脱聚合研究.

主要成果:

通过电化学启动的聚合物成功合成了明确的线性多硫化物.
DFT发现了一种可逆的"自我纠正"机制,确保控制硫级别.
通过热脱聚变证明了聚合物可回收为单体.
多硫化物) 作为黄金吸附剂和铜结合剂表现出有效性.

结论:

电化学启动为传统的聚合物合成方法提供了更安全,更可控的替代方案.
合成的多硫化物具有可调节的结构和特性,在金属回收和回收中具有有前途的应用.
这项工作为控制高硫聚合物中的硫等级建立了新的基准.

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相关概念视频

Preparation and Reactions of Sulfides

Preparation and Reactions of Sulfides

Sulfides are the sulfur analog of ethers, just as thiols are the sulfur analog of alcohol. Like ethers, sulfides also consist of two hydrocarbon groups bonded to the central sulfur atom. Depending upon the type of groups present, sulfides can be symmetrical or asymmetrical. Symmetrical sulfides can be prepared via an SN2 reaction between 2 equivalents of an alkyl halide and one equivalent of sodium sulfide.

Preparation and Reactions of Thiols

Preparation and Reactions of Thiols

Thiols are prepared using the hydrosulfide anion as a nucleophile in a nucleophilic substitution reaction with alkyl halides. For instance, bromobutane reacts with sodium hydrosulfide to give butanethiol.