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Flexible SERS active detection from novel Ag nano-necklaces as highly reproducible and ultrasensitive tips
Duan, CY; Ren, B; Liu, HY; Wang, Y; Chen, YF
JUN
发表期刊SCIENCE CHINA-MATERIALS
ISSN2095-8226
卷号59页码:435
摘要Surface-enhanced Raman scattering (SERS) spectroscopy has been considered as a promising way to realize real-time, in-situ and ultrasensitive analysis of chemo- and biochemical molecules in different applications even in intracellular or aqueous environments. In this work, polymer-supported novel Ag nano-necklaces (AgNLs) as flexible SERS substrates were fabricated for ultrasensitive chemical and biological detection. With the stringing of dense "hot spot" in three-dimension, AgNLs located on polydimethylsiloxane (PDMS) work like the removable and reusable "tip" on the surface of analytes with different morphologies and conditions. The novel substrate shows ultra-high enhancement factor (as high as 109) with excellent reproducibility and long-term stability (7 months) in an aqueous environment. With further functionalizing with p-mercaptobenzoic acid, AgNLs/PDMS elastomer also reveals sensitive and consistent pH detection ability over the wide range of pH 4.0-9.0, indicating their wide applications in biological and environmental fields. This work provides a feasible strategy for designing ultrasensitive, reproducible and flexible SERS substrate for practical detection.
关键词Enhanced Raman-spectroscopy Nanoparticles Substrate Arrays Silicon Layer Scale Ph
WOS标题词Materials Science
DOI10.1007/s40843-016-5056-3
WOS记录号WOS:000383104900006
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文献类型期刊论文
条目标识符http://ir.ipe.ac.cn/handle/122111/22565
专题研究所(批量导入)
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GB/T 7714
Duan, CY,Ren, B,Liu, HY,et al. Flexible SERS active detection from novel Ag nano-necklaces as highly reproducible and ultrasensitive tips[J]. SCIENCE CHINA-MATERIALS
APA Duan, CY,Ren, B,Liu, HY,Wang, Y,&Chen, YF.
MLA Duan, CY,et al."Flexible SERS active detection from novel Ag nano-necklaces as highly reproducible and ultrasensitive tips".SCIENCE CHINA-MATERIALS 59
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