Poly(3‐hexylthiophene)s Functionalized with N‐Heterocyclic Carbenes as Robust and Conductive Ligands for the Stabilization of Gold Nanoparticles
作者:Ningwei Sun、Shi‐Tong Zhang、Frank Simon、Anja Maria Steiner、Jonas Schubert、Yixuan Du、Zhi Qiao、Andreas Fery、Franziska Lissel
DOI:10.1002/anie.202012216
日期:2021.2.19
Recently, N‐heterocyclic carbenes (NHCs) are explored as anchor groups to bind organic ligands to colloidal gold (i.e. gold nanoparticles, Au NPs), yet these efforts are confined to non‐conjugated ligands so far—that is, focused solely on exploiting the stability aspect. Using NHCs to link Au NPs and electronically active organic components, for example, conjugated polymers (CPs), will allow capitalizing
最近,N-杂环卡宾(NHC)被探索作为锚定基团将有机配体与胶体金(即金纳米颗粒,Au NP)结合,但迄今为止这些努力仅限于非共轭配体,即仅集中于利用稳定性方面。使用 NHC 连接 Au NP 和电子活性有机成分,例如共轭聚合物 (CP),将能够利用 NHC 锚的稳定性和固有导电性。在这里,我们报道了三种类型的 Br-NHC-Au-X (X=Cl, Br) 配合物,当用作 Kumada 聚合的起始点时,会产生区域规则性聚(3-己基噻吩)-NHC-Au (P3HTs-NHC) ‐Au) 具有窄分子量分布。相应的纳米颗粒是通过直接还原获得的,并表现出优异的热稳定性和氧化还原稳定性。NHC 锚能够在金/CP 界面上实现电子离域,与 P3HT-NHC-Au 相比,电致变色响应行为得到改善。