相关实验视频

Updated: Aug 1, 2026

Synthesis of Substrate-Bound Au Nanowires Via an Active Surface Growth Mechanism
09:36

Synthesis of Substrate-Bound Au Nanowires Via an Active Surface Growth Mechanism

Published on: July 18, 2018

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长和孤立的石墨烯纳米带通过在Au上表面聚合在Au上(111))

Umamahesh Thupakula1, We-Hyo Soe2,3, Christian Joachim2,4

  • 1Centre d'Élaboration de Matériaux et d'Études Structurales (CEMES), Centre National de la Recherche Scientifique (CNRS), Université de Toulouse, 29 Rue J. Marvig, BP 94347, 31055, Toulouse Cedex, France. umamahesh.thupakula@cemes.fr.

Communications chemistry
|December 6, 2023
PubMed
概括

研究人员开发了一种新的表面化学方法,用于制造长,孤立的石墨烯纳米带 (GNRs) 用于分子电子. 该协议精确控制高达50纳米的GNR长度,使得先进的纳米材料设备制造成为可能.

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Microscopic Visualization of Porous Nanographenes Synthesized through a Combination of Solution and On-Surface Chemistry08:18

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相关概念视频

Anionic Chain-Growth Polymerization: Overview01:20

Anionic Chain-Growth Polymerization: Overview

The polymerization process that involves carbanion as an intermediate is called anionic polymerization. It is also a type of addition or chain-growth polymerization. Anionic polymerization gets initiated by a strong nucleophile such as an organolithium or a Grignard reagent. The most commonly used initiator for anionic polymerization is butyl lithium. Monomers involved in anionic polymerization must possess a vinyl group bonded to one or two electron-withdrawing groups. For instance,...
Cationic Chain-Growth Polymerization: Mechanism00:57

Cationic Chain-Growth Polymerization: Mechanism

The cationic polymerization mechanism consists of three steps: initiation, propagation, and termination. In the initiation step of the polymerization process, the π bond of a monomer gets protonated by the Lewis acid catalyst, which is formed from boron trifluoride and water. The protonation of the π bond generates a carbocation stabilized by the electron‐donating group. In the propagation step, the π bond of the second monomer acts as a nucleophile and attacks the generated carbocation,...