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首页> 外文期刊>RSC Advances >The highly sensitive determination of serotonin by using gold nanoparticles (Au NPs) with a localized surface plasmon resonance (LSPR) absorption wavelength in the visible region
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The highly sensitive determination of serotonin by using gold nanoparticles (Au NPs) with a localized surface plasmon resonance (LSPR) absorption wavelength in the visible region

机译：通过使用金纳米颗粒（Au nps）在可见区域中具有局部表面等离子体共振（LSPR）吸收波长的金纳米颗粒（AU NPS）的高敏感测定

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The development of improved methods for the synthesis of monodisperse gold nanoparticles (Au NPs) is of high priority because they can be used as substrates for surface-enhanced Raman scattering (SERS) applications relating to biological lipids. Herein, Au NPs have been successfully synthesized via a seed-mediated growth method. The LSPR peak is controlled via adjusting the gold nanoseed component, and different fabrication methods were studied to establish the effect of sonication time on NP size. The simple, facile, and room-temperature method is based on a conventional ultrasonic bath, which leads to ultrasonic energy effects on the size and morphology of the Au NPs. This research offers new opportunities for the production of highly monodispersed spherical Au NPs without the use of a magnetic stirrer method, as evidenced by ultraviolet-visible reflectance spectra and scanning electron microscopy (SEM) analysis. SEM images indicate that the spherical Au NP colloidal particles are stable and reliable, which paves the way for their use as a nanostructured biosensor platform that can be exploited for multiple applications, for example, in materials science, sensing, catalysis, medicine, food safety, biomedicine, etc. The highest enhancement factor that could be achieved in terms of the SERS enhancement activity of these Au NP arrays was determined using 10 ~(?9) M serotonin (5-hydroxytryptamine, 5-HT) as the Raman probe molecules.
机译：改进的单分散金纳米颗粒（Au nps）的改进方法的发展具有高优先级，因为它们可以用作与生物脂质有关的表面增强拉曼散射（SERS）应用的基材。这里，通过种子介导的生长方法成功地合成了Au NP。通过调节金纳米糖分组分来控制LSPR峰，研究不同的制造方法，以建立超声处理时间对NP尺寸的影响。简单，容易和室温方法基于传统的超声浴，这导致超声波能量对Au NP的尺寸和形态产生的影响。本研究提供了在不使用磁力搅拌器方法的情况下生产高度单分散的球形AU NPS的新机会，如紫外线可见反射光谱和扫描电子显微镜（SEM）分析所证明。 SEM图像表明球形AU NP胶体颗粒是稳定可靠的，其用作纳米结构的生物传感器平台铺平道路，该平台可以用于多种应用，例如材料科学，传感，催化，医学，食品安全，生物医学素等。在这些Au NP阵列的SERs增强活性方面可以使用10〜（α9）m serotonin（5-羟基 - 羟基胺，5-HT）作为拉曼探针分子来实现的最高增强因子。

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