Highly Monodisperse Stable Gold Nanorod Powder for Optical Sensor

IF 9.6 1区材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Nano Letters Pub Date : 2024-11-15 DOI:10.1021/acs.nanolett.4c04640

Zhiyang Zhang, Yanzhou Wu, Xin Cao, Junpeng Gao, Shuoyang Yan, Shuang Su, Yixuan Wu, Na Zhou, Xiaoyan Wang, Lingxin Chen

{"title":"Highly Monodisperse Stable Gold Nanorod Powder for Optical Sensor","authors":"Zhiyang Zhang, Yanzhou Wu, Xin Cao, Junpeng Gao, Shuoyang Yan, Shuang Su, Yixuan Wu, Na Zhou, Xiaoyan Wang, Lingxin Chen","doi":"10.1021/acs.nanolett.4c04640","DOIUrl":null,"url":null,"abstract":"Gold nanorods (GNRs) as plasmonic metal nanoparticles are valuable for optical applications due to their tunable plasmonic properties. However, conventional colloidal GNRs face significant optical instability during storage, which limits their practical use. In this work, we developed a highly dispersible GNR powder using an octadecyl trimethylammonium bromide (C18TAB)-assisted freeze-drying method, preserving the optical and chemical sensing properties of GNRs for over 4 months. Compared with C16TAB, C18TAB significantly enhances the GNRs dispersibility even at lower concentrations. Our study demonstrates that C18TAB forms a sponge-like crystal structure that prevents aggregation during the freeze-drying process. The resulting GNR powder retains its plasmonic features and water dispersibility, achieving near-identical optical properties to those of fresh GNR solutions. This stability enabled creation of a liquid-free colorimetric test kit with a long shelf life. This work marks a significant step forward in the use of GNRs as standard analytical reagents, opening new avenues for real-world applications.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":null,"pages":null},"PeriodicalIF":9.6000,"publicationDate":"2024-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Nano Letters","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1021/acs.nanolett.4c04640","RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}

引用次数: 0

Abstract

Gold nanorods (GNRs) as plasmonic metal nanoparticles are valuable for optical applications due to their tunable plasmonic properties. However, conventional colloidal GNRs face significant optical instability during storage, which limits their practical use. In this work, we developed a highly dispersible GNR powder using an octadecyl trimethylammonium bromide (C₁₈TAB)-assisted freeze-drying method, preserving the optical and chemical sensing properties of GNRs for over 4 months. Compared with C₁₆TAB, C₁₈TAB significantly enhances the GNRs dispersibility even at lower concentrations. Our study demonstrates that C₁₈TAB forms a sponge-like crystal structure that prevents aggregation during the freeze-drying process. The resulting GNR powder retains its plasmonic features and water dispersibility, achieving near-identical optical properties to those of fresh GNR solutions. This stability enabled creation of a liquid-free colorimetric test kit with a long shelf life. This work marks a significant step forward in the use of GNRs as standard analytical reagents, opening new avenues for real-world applications.

Abstract Image

查看原文本刊更多论文

用于光学传感器的高单分散稳定金纳米棒粉末

金纳米棒（GNRs）作为等离子金属纳米粒子，因其可调的等离子特性而在光学应用中具有重要价值。然而，传统的胶体 GNR 在存储过程中面临着严重的光学不稳定性，这限制了它们的实际应用。在这项工作中，我们利用十八烷基三甲基溴化铵（C18TAB）辅助冷冻干燥法研制出了一种高分散性 GNR 粉末，可在 4 个月内保持 GNR 的光学和化学传感特性。与 C16TAB 相比，即使浓度较低，C18TAB 也能显著提高 GNRs 的分散性。我们的研究表明，C18TAB 形成的海绵状晶体结构可防止冻干过程中的聚集。由此产生的 GNR 粉末保留了其等离子特性和水分散性，实现了与新鲜 GNR 溶液几乎相同的光学特性。这种稳定性使得无液比色检测试剂盒得以问世，并具有较长的保质期。这项工作标志着将 GNR 用作标准分析试剂向前迈出了重要一步，为实际应用开辟了新途径。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Nano Letters 工程技术-材料科学：综合

CiteScore

16.80

自引率

2.80%

发文量

1182

审稿时长

1.4 months

期刊介绍： Nano Letters serves as a dynamic platform for promptly disseminating original results in fundamental, applied, and emerging research across all facets of nanoscience and nanotechnology. A pivotal criterion for inclusion within Nano Letters is the convergence of at least two different areas or disciplines, ensuring a rich interdisciplinary scope. The journal is dedicated to fostering exploration in diverse areas, including: - Experimental and theoretical findings on physical, chemical, and biological phenomena at the nanoscale - Synthesis, characterization, and processing of organic, inorganic, polymer, and hybrid nanomaterials through physical, chemical, and biological methodologies - Modeling and simulation of synthetic, assembly, and interaction processes - Realization of integrated nanostructures and nano-engineered devices exhibiting advanced performance - Applications of nanoscale materials in living and environmental systems Nano Letters is committed to advancing and showcasing groundbreaking research that intersects various domains, fostering innovation and collaboration in the ever-evolving field of nanoscience and nanotechnology.