title: A silver nanorod resonance rayleigh scattering-energy transfer analytical platform for trace tea polyphenols.
abstract: The stable silver nanorod (AgNR) sol in red was prepared by the two-step procedure of NaBH4-H2O2 and citrate heating reduction, and it exhibited a strong resonance Rayleigh scattering (RRS) peak at 346 nm. In pH 3.8 HAc-NaAc buffer solution, tea polyphenols (TP) reacted with ammonium molybdate (AM) to form yellow organic molybdate (OM) as receptor that was closed to the donor of AgNR, the RRS energy transfer (RRS-ET) takes place, owing to the overlapping between the AgNR RRS spectra and OM absorption spectra. When TP concentration increased, the RRS intensity decreased due to the RRS-ET increasing. So, a simple and sensitive AgNR surface plasmon RRS-ET analytical platform was fabricated to detect trace TP in the range of 0.05-0.85 μg/mL, with a detection limit of 0.03 μg/mL TP. The TP in tea samples was analyzed by this RRS-ET analysis platform, with satisfactory results.
authors.affiliation: Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection of Ministry Education, Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Guangxi Normal University, Guilin 541004, China. Electronic address: ahliang2008@163.com.
authors.forename: Aihui
authors.initials: A
authors.lastname: Liang
authors.affiliation: Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection of Ministry Education, Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Guangxi Normal University, Guilin 541004, China.
authors.forename: Yaohui
authors.initials: Y
authors.lastname: Wang
authors.affiliation: Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection of Ministry Education, Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Guangxi Normal University, Guilin 541004, China.
authors.forename: Guiqing
authors.initials: G
authors.lastname: Wen
authors.affiliation: Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection of Ministry Education, Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Guangxi Normal University, Guilin 541004, China.
authors.forename: Xinghui
authors.initials: X
authors.lastname: Zhang
authors.affiliation: Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection of Ministry Education, Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Guangxi Normal University, Guilin 541004, China.
authors.forename: Yanghe
authors.initials: Y
authors.lastname: Luo
authors.affiliation: Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection of Ministry Education, Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Guangxi Normal University, Guilin 541004, China. Electronic address: zljiang@mailbox.gxnu.edu.cn.
authors.forename: Zhiliang
authors.initials: Z
authors.lastname: Jiang
mesh_terms: D004735:Energy Transfer; D043942:Nanotubes / Q000737:chemistry; D059808:Polyphenols / Q000032:analysis*; D012542:Scattering, Radiation; D012834:Silver / Q000737:chemistry; D020349:Surface Plasmon Resonance / Q000295:instrumentation / Q000379:methods*; D013662:Tea / Q000737:chemistry*; D014732:Vibration
chemical_list: D059808:Polyphenols; D013662:Tea; D012834:Silver
keywords: AgNR; Molybdate; RRS-ET; Tea polyphenols