Direct Observation of the Reactivity of Electrons toward Gold Nanoparticles in Aqueous Solution,Nano Letters

当前位置： X-MOL 学术 › Nano Lett. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Direct Observation of the Reactivity of Electrons toward Gold Nanoparticles in Aqueous Solution
Nano Letters ( IF 9.6 ) Pub Date : 2024-09-18 , DOI: 10.1021/acs.nanolett.4c03396
Zhiwen Jiang ₁ , Mehran Mostafavi ₁

Affiliation

The catalytic activity of gold nanoparticles (AuNPs) has been widely acknowledged; however, Au NPs are considered to be highly inert as radiosensitizers in biological systems. This apparent discrepancy across different fields complicates the understanding of their interfacial reactivity, particularly in terms of electron transfer reactions. Here, we employ pulse radiolysis to determine the rate constants for the reactions of electrons with AuNPs in aqueous solution. Our investigation of AuNPs with different sizes and surface modifications demonstrates the potential influence of the AuNPs design on electron transfer reactions. These findings address long-standing mechanistic contradictions and underscore the significance of interfacial electron dynamics on AuNPs in both catalytic and biological processes.

中文翻译：

直接观察水溶液中电子对金纳米粒子的反应性

金纳米颗粒（AuNPs）的催化活性已得到广泛认可；然而，金纳米颗粒被认为作为生物系统中的放射增敏剂具有高度惰性。不同领域之间的这种明显差异使得对其界面反应性的理解变得复杂，特别是在电子转移反应方面。在这里，我们采用脉冲辐射分解来确定水溶液中电子与 AuNP 反应的速率常数。我们对不同尺寸和表面修饰的 AuNP 的研究表明了 AuNP 设计对电子转移反应的潜在影响。这些发现解决了长期存在的机械矛盾，并强调了 AuNP 界面电子动力学在催化和生物过程中的重要性。

更新日期：2024-09-20

点击分享查看原文

点击收藏

阅读更多本刊最新论文本刊介绍/投稿指南11