金三角纳米棱镜和纳米十面体：合成和与鲁米诺相互作用的生物传感器应用研究。,Langmuir

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金三角纳米棱镜和纳米十面体：合成和与鲁米诺相互作用的生物传感器应用研究。
Langmuir ( IF 3.7 ) Pub Date : 2016-11-02 00:00:00 , DOI: 10.1021/acs.langmuir.6b02976
Selvaraj Naveenraj,Ramalinga Viswanathan Mangalaraja,Jerry J. Wu,Abdullah M. Asiri,Sambandam Anandan

在不存在和存在纳米种子的情况下，通过简单的溶剂热合成，通过在N，N中用聚乙烯基吡咯烷酮（PVP）还原金氯化物（HAuCl ₄）进行简单的溶剂热合成，合成了金三角纳米棱镜和纳米十面体（五角锥体）。-二甲基甲酰胺（DMF）。这些金纳米颗粒表现出两个等离子体共振带。由于大量的环境和生物传感器都基于鲁米诺和金纳米颗粒的结合，因此使用紫外可见光谱和荧光光谱法研究了这些金纳米颗粒与鲁米诺的相互作用。金纳米颗粒通过静态猝灭机理，即基态复合物的形成，猝灭了鲁米诺的荧光，这已通过吸收光谱法和时间分辨荧光光谱法得到了证实。Stern-Volmer淬灭常数和有效淬灭常数决定了金纳米十面体与鲁米诺的相互作用比三角金纳米棱镜更强。使用FRET理论计算的金纳米颗粒与鲁米诺之间的距离，小于8nm，表明相互作用期间有效的能量转移。这些结果有望对新型传感器的开发有用。

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Gold Triangular Nanoprisms and Nanodecahedra: Synthesis and Interaction Studies with Luminol toward Biosensor Applications

Gold triangular nanoprisms and nanodecahedra (pentagonal bipyramids) were synthesized in the absence and presence of nanoseeds by a simple solvothermal synthesis through the reduction of Auric Chloride (HAuCl₄) with poly(vinylpyrrolidone) (PVP) in N,N-dimethylformamide (DMF), respectively. These gold nanoparticles exhibit two plasmon resonance bands. The interaction of these gold nanoparticles with luminol was investigated using UV–vis and fluorescence spectroscopy since hefty number of environmental and biological sensors are based on the combination of luminol and gold nanoparticles. The gold nanoparticles quenches the fluorescence of luminol through a static quenching mechanism, i.e., ground state complex formation, which was confirmed by both absorption spectroscopy as well as time-resolved fluorescence spectroscopy. The Stern–Volmer quenching constant and the effective quenching constant determine that gold nanodecahedra has more interaction with luminol than that of triangular gold nanoprisms. The distance between the gold nanoparticles and luminol, calculated using FRET theory, is less than 8 nm, which indicates efficient energy transfer during interaction. These results are expected to be useful for the development of novel sensors.

更新日期：2016-11-02

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