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Hung YS, Chang CW, Shen YC, Yu YC, Huang WL, Huang CC. Spectroscopic analyses of particle and energy aggregations at the interface of silver nanoparticles and fluorescent carbon nanodots. NANOSCALE 2023; 15:13987-13996. [PMID: 37466382 DOI: 10.1039/d3nr01695a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/20/2023]
Abstract
We study the change in the surface electromagnetic field provided by photoexcited silver nanoparticles as the field is disturbed by fluorescent carbon nanodots. Fluorescent carbon nanodots with an appropriate quantity and quality of surface functional groups are used to mediate the aggregation of silver nanoparticles of matching size and shape to form available nano-size conical structures. Carbon nanodots in the composite absorb and transfer additional photoenergy to the silver surface, resulting in energy aggregation within the cone structure and enhancement of the electromagnetic field in proximity to the silver surface. This elevated energy state is manifested in the strengthening of the SERS signal of the analytical probe 4-aminophenyl disulfide and the mechanism involved is elucidated by additional molecular spectroscopy studies.
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Affiliation(s)
- Yi-Shan Hung
- Department of Applied Chemistry, National Chiayi University, No. 300, Syuefu Rd., Chiayi City 60004, Taiwan
| | - Chia-Wen Chang
- Department of Chemistry, Tamkang University, No. 151, Yingzhuan Rd., Tamsui Dist., New Taipei City 25137, Taiwan.
| | - Yi Chen Shen
- Department of Applied Chemistry, National Chiayi University, No. 300, Syuefu Rd., Chiayi City 60004, Taiwan
| | - Yun-Chi Yu
- Department of Applied Chemistry, National Chiayi University, No. 300, Syuefu Rd., Chiayi City 60004, Taiwan
| | - Wei-Lun Huang
- Department of Applied Chemistry, National Chiayi University, No. 300, Syuefu Rd., Chiayi City 60004, Taiwan
| | - Chia-Chi Huang
- Department of Chemistry, Tamkang University, No. 151, Yingzhuan Rd., Tamsui Dist., New Taipei City 25137, Taiwan.
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Zhou X, Chen S, Pan Y, Wang Y, Xu N, Xue Y, Wei X, Lu Y. High-Performance Au@Ag Nanorods Substrate for SERS Detection of Malachite Green in Aquatic Products. BIOSENSORS 2023; 13:766. [PMID: 37622852 PMCID: PMC10452132 DOI: 10.3390/bios13080766] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Revised: 07/20/2023] [Accepted: 07/26/2023] [Indexed: 08/26/2023]
Abstract
In order to improve the detection performance of surface-enhanced Raman scattering (SERS), a low-cost Au@Ag nanorods (Au@Ag NRs) substrate with a good SERS enhancement effect was developed and applied to the detection of malachite green (MG) in aquaculture water and crayfish. By comparing the SERS signal enhancement effect of five kinds of Au@Ag NRs substrates with different silver layer thickness on 4-mercaptobenzoic acid (4-MBA) solution, it was found that the substrate prepared with 100 µL AgNO3 had the smallest aspect ratio (3.27) and the thickest Ag layer (4.1 nm). However, it showed a good signal enhancement effect, and achieved a detection of 4-MBA as low as 1 × 10-11 M, which was 8.7 times higher than that of the AuNRs substrate. In addition, the Au@Ag NRs substrate developed in this study was used for SRES detection of MG in crayfish; its detection limit was 1.58 × 10-9 M. The developed Au@Ag NRs sensor had the advantages of stable SERS signal, uniform size and low cost, which provided a new tool for SERS signal enhancement and highly sensitive SERS detection method development.
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Affiliation(s)
- Xiaoxiao Zhou
- College of Food Science and Technology, Shanghai Ocean University, Shanghai 201306, China;
- Laboratory of Quality & Safety Risk Assessment for Aquatic Products on Storage and Preservation, Ministry of Agriculture, Shanghai 201306, China
| | - Shouhui Chen
- Department of Food Science & Technology, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China; (Y.P.); (Y.X.)
- Food Safety Engineering and Technology Research Centre (Shanghai), Shanghai 200240, China
| | - Yi Pan
- Department of Food Science & Technology, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China; (Y.P.); (Y.X.)
| | - Yuanfeng Wang
- Institute of Food Engineering, College of Life Science, Shanghai Normal University, 100 Guilin Road, Xuhui District, Shanghai 200234, China; (Y.W.); (N.X.)
| | - Naifeng Xu
- Institute of Food Engineering, College of Life Science, Shanghai Normal University, 100 Guilin Road, Xuhui District, Shanghai 200234, China; (Y.W.); (N.X.)
| | - Yanwen Xue
- Department of Food Science & Technology, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China; (Y.P.); (Y.X.)
- Food Safety Engineering and Technology Research Centre (Shanghai), Shanghai 200240, China
| | - Xinlin Wei
- Department of Food Science & Technology, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China; (Y.P.); (Y.X.)
| | - Ying Lu
- College of Food Science and Technology, Shanghai Ocean University, Shanghai 201306, China;
- Laboratory of Quality & Safety Risk Assessment for Aquatic Products on Storage and Preservation, Ministry of Agriculture, Shanghai 201306, China
- Marine Biomedical Science and Technology Innovation Platform of Lingang New Area, Shanghai 201306, China
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Wang BX, Duan G, Xu W, Xu C, Jiang J, Yang Z, Wu Y, Pi F. Flexible surface-enhanced Raman scatting substrates: recent advances in their principles, design strategies, diversified material selections and applications. Crit Rev Food Sci Nutr 2022; 64:472-516. [PMID: 35930338 DOI: 10.1080/10408398.2022.2106547] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Surface-enhanced Raman scattering (SERS) is widely used as a powerful analytical technology in cutting-edge areas such as food safety, biology, chemistry, and medical diagnosis, providing ultra-fast, ultra-sensitive, nondestructive characterization and achieving ultra-high detection sensitivity even down to the single-molecule level. Development of Raman spectroscopy is strongly dependent on high-performance SERS substrates, which have long evolved from the early days of rough metal electrodes to periodic nanopatterned arrays building on solid supporting substrates. For rigid SERS substrates, however, their applications are restricted by sophisticated pretreatments for detecting solid samples with non-planar surfaces. It is therefore essential to reassert the principles in constructing flexible SERS substrates. Herein, we comprehensively review the state-of-the-art in understanding, preparing and using flexible SERS. The basic mechanisms behind the flexible SERS are briefly outlined, typical design strategies are highlighted and diversified selection of materials in preparing flexible SERS substrates are reviewed. Then the recent achievements of various interdisciplinary applications based on flexible SERS substrates are summarized. Finally, the challenges and perspectives for future evolution of flexible SERS and their applications are demonstrated. We propose new research directions focused on stimulating the real potential of SERS as an advanced analytical technique for commercialization.
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Affiliation(s)
- Ben-Xin Wang
- School of Science, Jiangnan University, Wuxi, China
| | - Guiyuan Duan
- School of Science, Jiangnan University, Wuxi, China
| | - Wei Xu
- School of Science, Jiangnan University, Wuxi, China
| | - Chongyang Xu
- School of Science, Jiangnan University, Wuxi, China
| | | | | | - Yangkuan Wu
- School of Science, Jiangnan University, Wuxi, China
| | - Fuwei Pi
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, China
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Li L, Cui Q, Li M, Li T, Cao S, Dong S, Wang Y, Dai Q, Ning J. Rapid detection of multiple colorant adulteration in Keemun black tea based on hemp spherical AgNPs-SERS. Food Chem 2022; 398:133841. [DOI: 10.1016/j.foodchem.2022.133841] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Revised: 07/28/2022] [Accepted: 07/29/2022] [Indexed: 10/16/2022]
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