Design of Metal Aerogels-Based 3D SERS Substrates by Gentle Compression,Advanced Functional Materials

当前位置： X-MOL 学术 › Adv. Funct. 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.)

Design of Metal Aerogels-Based 3D SERS Substrates by Gentle Compression
Advanced Functional Materials ( IF 18.5 ) Pub Date : 2024-08-22 , DOI: 10.1002/adfm.202412006
Lin Zhou _{1,

2} , Yu Liu ₁ , Yanli Li ₁ , Chunlei Long ₃ , Shujin Zhou ₄ , René Hübner ₅ , Yueqi Li ₃ , Geng Xue ₁ , Dejun Lin ₁ , Weigao Xu ₄ , Yue Hu ₁ , Ran Du _{3,

6}

Affiliation

Metal aerogels (MAs) are emerging all-nanometal-structured self-standing porous materials featuring exceptional performances in diverse fields. They have recently been adopted as 3D surface-enhanced Raman scattering (SERS) substrates, while the less utilization of the unique porous structure leads to limited performance. Here, a fascinating compression-mediated regulation strategy is presented to largely boost the SERS performance of Au–Ag aerogels. By gently pressing, both the density of hot spots and the inter-ligament distance can be efficiently modulated, thus enabling to flexibly manipulate the SERS properties of MAs. On this basis, a record-high misfocus tolerance (∼8.8 mm), low detection limit (down to 0.1 nM), high stability (>1 month), reusability, and multiplex detection ability are concurrently realized. This study may point out a new direction for engineering 3D SERS substrates with tunable and exceptional performance.

中文翻译：

通过温和压缩设计基于金属气凝胶的 3D SERS 基底

金属气凝胶（MA）是新兴的全纳米金属结构自支撑多孔材料，在各个领域具有卓越的性能。它们最近被用作 3D 表面增强拉曼散射 (SERS) 基板，但独特的多孔结构的利用率较低，导致性能有限。在这里，提出了一种令人着迷的压缩介导的调节策略，可以大大提高金银气凝胶的 SERS 性能。通过轻轻按压，可以有效地调节热点的密度和韧带间的距离，从而能够灵活地操纵MA的SERS特性。在此基础上，同时实现了创纪录的高误焦容限（∼8.8 mm）、低检测限（低至0.1 nM）、高稳定性（>1个月）、可重复使用性和多重检测能力。这项研究可能为设计具有可调且卓越性能的 3D SERS 基底指明了新方向。

更新日期：2024-08-22

点击分享查看原文

点击收藏

阅读更多本刊新发论文本刊介绍/投稿指南