In Situ Direct Monitoring of the Morphological Transformation of Single Au Nanostars Induced by Iodide through Dual-Laser Dark-Field Microscopy: Unexpected Mechanism and Sensing Applications

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成果类型：

期刊论文

作者：

Xu, Weizhen;Luo, Hongmei;Ouyang, Min;Long, Tiantian;Lin, Qinlu

通讯作者：

Qinlu Lin

作者机构：

[Luo, Hongmei; Ouyang, Min; Long, Tiantian; Xu, Weizhen; Lin, Qinlu] Cent South Univ Forestry Technol, Coll Food Sci & Engn, Natl Engn Lab Rice & Prod Further Proc, Changsha 410004, Peoples R China.

通讯机构：

[Qinlu Lin] N

National Engineering Laboratory for Rice and By-Products Further Processing, College of Food Science and Engineering, Central South University of Forestry & Technology, Changsha 410004, China<&wdkj&>Author to whom correspondence should be addressed.

语种：

英文

关键词：

Au nanostars;Green/Red channel intensities (G/R ratios);dark-field microscopy;laser;single nanoparticle imaging

期刊：

Nanomaterials

ISSN：

2079-4991

年：

2022

卷：

期：

页码：

2555-

DOI：

10.3390/nano12152555

基金类别：

This work was supported by funding from the National Natural Science Foundation of China (21505162, 81772917, and 31571874), the Grain-Oil Process and Quality Control 2011 Collaborative and Innovative Grant from Hunan Province, and the Training Program for Excellent Young Innovators of Changsha (kq1802043), a research project on quality improvement technology of cold fresh high-grade beef storage (sgy-xqzz2021-22). We also gratefully acknowledge the financial support from the China Scholarship Council.

机构署名：

本校为第一机构

院系归属：

食品科学与工程学院

摘要：

Single nanoparticle imaging is a significant technique to help reveal the reaction mechanism and provides insight into the nanoparticle transformation. Here, we monitor the in situ morphological transformation of Au nanostars (GNSs) induced by iodide (I(-)) in real time using dark-field microscopy (DFM) with 638 nm red (R) and 534 nm green (G) laser coillumination. The two lasers are selected because the longitudinal localized surface plasmon resonance of GNSs is located at 638 nm and that for GNSs after transformation is at 534 nm. Interestingly, I(-) can interact with GNSs directly without t...

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In Situ Direct Monitoring of the Morphological Transformation of Single Au Nanostars Induced by Iodide through Dual-Laser Dark-Field Microscopy: Unexpected Mechanism and Sensing Applications

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