Fabrication of transparent SERS platform via interface self-assembly of gold nanorods and gel trapping technique for on-site real time detection.

Autor: Lin X; National Key Laboratory of Science and Technology on Tunable Laser, Harbin Institute of Technology, Harbin, 150080, China. hasiwuliji@126.com dianyanglin@hit.edu.cn zw_lu@sohu.com., Hasi WL; National Key Laboratory of Science and Technology on Tunable Laser, Harbin Institute of Technology, Harbin, 150080, China. hasiwuliji@126.com dianyanglin@hit.edu.cn zw_lu@sohu.com., Han SQ; Affiliated Hospital of Inner Mongolia University for the Nationalities, Tongliao, 028007, Inner Mongolia, China., Lou XT; National Key Laboratory of Science and Technology on Tunable Laser, Harbin Institute of Technology, Harbin, 150080, China. hasiwuliji@126.com dianyanglin@hit.edu.cn zw_lu@sohu.com., Lin DY; National Key Laboratory of Science and Technology on Tunable Laser, Harbin Institute of Technology, Harbin, 150080, China. hasiwuliji@126.com dianyanglin@hit.edu.cn zw_lu@sohu.com., Lu ZW; National Key Laboratory of Science and Technology on Tunable Laser, Harbin Institute of Technology, Harbin, 150080, China. hasiwuliji@126.com dianyanglin@hit.edu.cn zw_lu@sohu.com.
Jazyk: angličtina
Zdroj: Physical chemistry chemical physics : PCCP [Phys Chem Chem Phys] 2015 Dec 14; Vol. 17 (46), pp. 31324-31.
DOI: 10.1039/c5cp04828a
Abstrakt: A transparent SERS platform was fabricated via the gel-trapping method coupled with a liquid/liquid interface self-assembly technique. We employed gold nanorods as the building blocks for interface self-assembly because of their strong localized surface plasmons upon excitation by infrared radiation. Based on a "top cover" configuration, this transparent SERS platform endows high signal reproducibility for directly detecting liquid samples by confining the sample droplet into a regular shape. The Au NR PDMS platform was able to directly detect crystal violet in aqueous solutions down to 10 ppb level with high enhancement factor (0.87 × 10(5)) and signal uniformity (RSD = 3.9%). Furthermore, SERS-based anti-fungal agent detection on a fish scale was demonstrated by simply covering the fish scale with a tailored GNRs PDMS film. The experimental results clearly show that the Au NR PDMS SERS platform has great potential for on-site real time detection of contaminants in water as well as on curved surfaces.
Databáze: MEDLINE
Externí odkaz: