Surface Engineering of Gold Nanoclusters Protected with 11-Mercaptoundecanoic Acid for Photoluminescence Sensing,ACS Applied Nano Materials

当前位置： X-MOL 学术 › ACS Appl. Nano Mater. › 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.)

Surface Engineering of Gold Nanoclusters Protected with 11-Mercaptoundecanoic Acid for Photoluminescence Sensing
ACS Applied Nano Materials ( IF 5.3 ) Pub Date : 2021-02-25 , DOI: 10.1021/acsanm.1c00404
Lin Zhu ₁ , Yuan Zeng ₁ , Melissa Teubner _{2,

3} , Benjamin Grimm-Lebsanft ₃ , Anna R. Ziefuß ₄ , Christoph Rehbock ₄ , Michael A. Rübhausen ₃ , Stephan Barcikowski ₄ , Wolfgang J. Parak _{1,

5} , Indranath Chakraborty ₁

Affiliation

11-Mercaptoundecanoic acid-protected gold nanoclusters (Au@MUA NCs) were synthesized and investigated as a model to understand the photoluminescence (PL) properties of water-soluble, structurally unknown Au NCs. Surface engineering, including ligand exchange where the length of the alkane chain was changed, ligand conjugation where the charged terminal carboxyl group of the ligands was blocked, and effects of external chemical reducing and oxidizing agents, was carried out. PL profiles were monitored to reveal the impact of surface engineering on the PL. We found that surface ligands, especially the ligand’s length and ligand functionalities, play a significant role in the PL properties of Au@MUA NCs. The results also show interesting properties of these NCs as a tunable PL sensor.

中文翻译：

用11-巯基癸酸保护的金纳米团簇的表面工程用于光致发光传感

合成了11-巯基十一烷酸保护的金纳米团簇（Au @ MUA NCs），并作为模型进行了研究，以了解水溶性，结构未知的Au NCs的光致发光（PL）特性。进行了表面工程设计，包括改变烷烃链长度的配体交换，配体的带电末端羧基被封闭的配体共轭，以及外部化学还原剂和氧化剂的作用。监测PL曲线以揭示表面工程对PL的影响。我们发现表面配体，尤其是配体的长度和配体功能，在Au @ MUA NCs的PL性能中起着重要作用。结果还显示了这些NC作为可调PL传感器的有趣特性。

更新日期：2021-03-26

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