Plasmonic colorimetric sensors based on etching and growth of noble metal nanoparticles: Strategies and applications
Plasmonic colorimetric sensors based on etching and growth of noble metal nanoparticles: Strategies and applications
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基于贵金属纳米颗粒蚀刻和生长的等离子体比色传感器：策略和应用
DOI：
10.1016/j.bios.2018.05.015
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发表时间：
2018
影响因子：
12.6
通讯作者：
Chen Lingxin
中科院分区：
文献类型：
--
作者：
Zhang Zhiyang;Wang Han;Chen Zhaopeng;Wang Xiaoyan;Choo Jaebum;Chen Lingxin
由于表面等离子体共振(LSPR)在可见光范围内的局域消光，等离子体比色传感器已成为化学和生物传感应用的有力工具。在等离子体传感器中，最著名的传感模式是聚集型等离子体比色传感器，它是基于纳米粒子聚集引起的等离子体激元耦合。本文重点介绍了近年来发展起来的等离子体比色传感模式--金属纳米粒子的刻蚀或生长引起等离子体激元的变化，即“非聚集”等离子体比色传感器。这种类型的传感器因其高灵敏度、多颜色变化和适用于制作测试条而吸引了越来越多的兴趣。特别值得注意的是，通过将纳米颗粒固定在衬底上的试纸可以避免纳米颗粒自动聚集的影响，增加了存储和使用的简单性。尽管有许多优秀的综述描述了等离子体传感器的进展，但基于金属纳米颗粒的刻蚀或生长的等离子体比色传感器的关注还很有限。本文重点介绍了“非聚集”等离子体比色传感器的研究策略和应用进展。我们还对当前与“非聚集”等离子体比色传感器相关的挑战提供了一些个人见解，并提出了未来的研究方向。
Plasmonic colorimetric sensors have emerged as a powerful tool in chemical and biological sensing applications due to the localized surface plasmon resonance (LSPR) extinction in the visible range. Among the plasmonic sensors, the most famous sensing mode is the “aggregation” plasmonic colorimetric sensor which is based on plasmon coupling due to nanoparticle aggregation. Herein, this review focuses on the newly-developing plasmonic colorimetric sensing mode – the etching or the growth of metal nanoparticles induces plasmon changes, namely, “non-aggregation” plasmonic colorimetric sensor. This type of sensors has attracted increasing interest because of their exciting properties of high sensitivity, multi-color changes, and applicability to make a test strip. Of particular interest, the test strip by immobilization of nanoparticles on the substrate can avoid the influence of nanoparticle auto-aggregation and increase the simplicity in storage and use. Although there are many excellent reviews available that describe the advance of plasmonic sensors, limited attention has been paid to the plasmonic colorimetric sensors based on etching or growth of metal nanoparticles. This review highlights recent progress on strategies and application of “non-aggregation” plasmonic colorimetric sensors. We also provide some personal insights into current challenges associated with “non-aggregation” plasmonic colorimetric sensors and propose future research directions.