Bacteria Inspired Internal Standard SERS Substrate for Quantitative Detection

被引:27
|
作者
Liu, Jiawei [1 ,2 ]
Hong, Zilan [1 ]
Yang, Weimin [3 ]
Liu, Chen [4 ,5 ,6 ,7 ]
Lu, Zhicheng [1 ]
Wu, Long [1 ]
Foda, Mohamed F. [1 ]
Yang, Zhilin [3 ]
Han, Heyou [1 ]
Zhao, Yanli [2 ]
机构
[1] Huazhong Agr Univ, Coll Sci, State Key Lab Agr Microbiol, Wuhan 430070, Peoples R China
[2] Nanyang Technol Univ, Sch Phys & Math Sci, Div Chem & Biol Chem, Singapore 637371, Singapore
[3] Xiamen Univ, Dept Phys, Xiamen 361005, Peoples R China
[4] Leibniz Inst Photon Technol Jena, D-07745 Jena, Germany
[5] Res Alliance Leibniz Hlth Technol, D-07745 Jena, Germany
[6] Friedrich Schiller Univ Jena, Inst Phys Chem, D-07743 Jena, Germany
[7] Friedrich Schiller Univ Jena, Abbe Ctr Photon, D-07743 Jena, Germany
基金
新加坡国家研究基金会; 中国国家自然科学基金; 国家重点研发计划;
关键词
internal standard; microbial synthesis; noble metals; quantitative detection; SERS; EXTRACELLULAR ELECTRON-TRANSFER; MICROBIAL SYNTHESIS; RAMAN-SPECTROSCOPY; ESCHERICHIA-COLI; NANOPARTICLES; BIOSYNTHESIS; NANOCRYSTALS; SHEWANELLA;
D O I
10.1021/acsabm.0c00263
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
Metal-respiring bacteria are frequently used to recycle metal resources by biosynthesizing nanoparticles on its surface in environment treatment. However, further utilization of biogenetic nanoparticles through combining the advantages of both bacteria and nanoparticles is still limited. Herein, biogenetic Au@Ag nanoislands are utilized as the surface-enhanced Raman spectroscopy (SERS) substrate for quantitative detection. Specifically, Au@Ag nanoislands enhance the Raman signal via surface plasmon resonance, while biomolecules (phospholipid, tyrosine, and phenylalanine, etc.) on bacterium serve as an internal standard to eliminate the discrepancy of the target SERS intensity in different hot spots. Gene-controlled biomolecules in bacteria guarantee the reproducibility of this SERS substrate. The generality of this analytical method is demonstrated by determining rhodamine 6G, malachite green, and uric acid. This discovery solves a pervasive problem in SERS analysis through a simple biogenetic nanosystem, which opens up an avenue to address scientific challenges by using versatile organisms from nature.
引用
收藏
页码:2009 / 2019
页数:11
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