One hour road to high-quality arrays of gold nanoparticles coated with organic ligands
One hour road to high-quality arrays of gold nanoparticles coated with organic ligands
复制标题
一小时获得涂有有机配体的高质量金纳米粒子阵列的道路
DOI：
10.1039/d3tc01497e
复制
发表时间：
2023
影响因子：
6.4
通讯作者：
Degousée T
中科院分区：
文献类型：
--
作者：
Degousée T
覆盖有机分子的金纳米颗粒阵列（AuNP）在生物学、电子学、能源和基础物理学等领域具有广阔的应用前景。在这里，我们考虑了不同的合成方法，用配体包裹AuNP，并诱导它们在一小时内自组装成一个网络。在诱导组装过程中，由水相AuNP形成的阵列被8到18个碳的小离子或烷烃链所稳定。或者，将AuNP交换到有机溶剂中，并在阵列形成之前覆盖烷烃硫醇或油胺。除了配体的长度外，沉积条件对网络形态和电子性能也有很大的影响。通过采用固态交换策略，我们将AuNP上的配体交替替换为长链和短链烷硫醇，使得网络电阻的变化是可逆的。使用这种配体交换策略，我们用定制的萘二亚胺取代了市售的烷硫醇，从而提高了网络的导电性和它们在空气中的稳定性。至关重要的是，这种简单、快速、多功能的aunp -有机网络形成为科学界研究复杂分子的物理和化学性质提供了一个平台。
Arrays of gold nanoparticles (AuNP) covered with organic molecules have promising applications in biology, electronics, energy, and fundamental physics, among other areas. Here we consider different approaches to synthesise, coat the AuNP with a ligand and to induce their self-assembly into a network within one hour. Arrays formed from aqueous AuNP are stabilised with small ions or alkane chains of 8 to 18 carbons long as the assembly is induced. Alternatively, the AuNP are exchanged to an organic solvent and covered with alkanethiols or oleylamine before the array formation. Beside the length of the ligand, the network morphology and electronic properties are highly affected by the deposition conditions. By using a solid-state exchange strategy, we alternately replaced the ligand on the AuNP with long and short alkanethiols, for which the change of the network's resistance appears reversible. Using this ligand exchanged strategy, we replaced a commercially available alkanethiol with a bespoke naphthalene diimide, resulting in improved conductivity of the networks and their stability in air. Crucially, this simple, rapid, and versatile AuNP–organic network formation offers a platform to the scientific community to investigate the physical and chemical properties of complex molecules.