PLLA Nanofibrous Paper-Based Plasmonic Substrate with Tailored Hydrophilicity for Focusing SERS Detection

	PLLA Nanofibrous Paper-Based Plasmonic Substrate with Tailored Hydrophilicity for Focusing SERS Detection
	Jundong Shao; Liping Tong; Siying Tang; Zhinan Guo; Han Zhang; Penghui Li; Huaiyu Wang; Chang Du; Xue-Feng Yu
刊名	ACS Applied Materials & Interfaces
	2015
英文摘要	We report a new paper-based surface enhanced Raman scattering (SERS) substrate platform contributed by a poly(L-lactic acid) (PLLA) nanofibrous paper adsorbed with plasmonic nanostructures, which can circumvent many challenges of the existing SERS substrates. This PLLA nanofibrous paper has three-dimensional porous structure, extremely clean surface with good hydrophobicity (contact angle is as high as 133.4°), and negligible background interference under Raman laser excitation. Due to the strong electrostatic interaction between PLLA nanofiber and cetyltrimethylammonium bromide (CTAB) molecules, the CTAB-coated gold nanorods (GNRs) are efficiently immobilized onto the fibers. Such a hydrophobic paper substrate with locally hydrophilic SERS-active area can confine analyte molecules and prevent the random spreading of molecules. The confinement leads to focusing effect and the GNRs-PLLA SERS substrate is found to be highly sensitive (0.1 nM Rhodamine 6G and malachite green) and exhibit excellent reproducibility (∼8% relative standard deviation (RSD)) and long-term stability. Furthermore, it is also cost-efficient, with simple fabrication methodology, and demonstrates high sample collection efficiency. All of these benefits ensure that this GNRs-PLLA substrate is a really perfect choice for a variety of SERS applications.
收录类别	SCI
原文出处	http://pubs.acs.org/doi/pdf/10.1021/am508881k
语种	英语
内容类型	期刊论文
源URL	[http://ir.siat.ac.cn:8080/handle/172644/7342]
专题	深圳先进技术研究院_医药所
作者单位	ACS Applied Materials & Interfaces
推荐引用方式 GB/T 7714	Jundong Shao,Liping Tong,Siying Tang,et al. PLLA Nanofibrous Paper-Based Plasmonic Substrate with Tailored Hydrophilicity for Focusing SERS Detection[J]. ACS Applied Materials & Interfaces,2015.
APA	Jundong Shao.,Liping Tong.,Siying Tang.,Zhinan Guo.,Han Zhang.,...&Xue-Feng Yu.(2015).PLLA Nanofibrous Paper-Based Plasmonic Substrate with Tailored Hydrophilicity for Focusing SERS Detection.ACS Applied Materials & Interfaces.
MLA	Jundong Shao,et al."PLLA Nanofibrous Paper-Based Plasmonic Substrate with Tailored Hydrophilicity for Focusing SERS Detection".ACS Applied Materials & Interfaces (2015).