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首页> 外文期刊>RSC Advances >2,3,4-Trihydroxy benzophenone as a novel reducing agent for one-step synthesis of size-optimized gold nanoparticles and their application in colorimetric sensing of adenine at nanomolar concentration
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2,3,4-Trihydroxy benzophenone as a novel reducing agent for one-step synthesis of size-optimized gold nanoparticles and their application in colorimetric sensing of adenine at nanomolar concentration

机译：2,3,4-三羟基苯甲酮作为一种新型还原剂，用于一步合成尺寸优化的金纳米粒子及其在纳米摩尔浓度下腺嘌呤的比色感测

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摘要

In this work, we report the use of 2,3,4-trihydroxy benzophenone (THB) as a novel reducing and stabilizing agent for the one-step synthesis of size-optimized gold nanoparticles (Au NPs). We have optimized various parameters such as reducing agent concentration, time and temperature for the controlling of Au NPs size and surface plasmon resonance (SPR) peak. The size and morphology of THB-Au NPs were confirmed by transmission electron microscopy (TEM) and dynamic light scattering (DLS) techniques. The average hydrodynamic diameter of THB-Au NPs was found to be similar to 12 nm. The absorption ratio at A(658)/A(525) for THB-Au NPs could be correlated quantitatively with the concentrations of adenine in the range of 0.005-100 mu M. The detection limit of adenine was estimated to be as low as 1.4 nM based on the absorbance measurements of THB induced aggregated Au NPs at 658 nm. In addition, this probe was successfully applied to detect adenine in biological samples such as urine and serum samples with reduced sample volumes.
机译：在这项工作中，我们将2,3,4-三羟基二苯甲酮（THB）作为一种新的还原和稳定剂，用于尺寸优化的金纳米颗粒（Au NPS）的一步合成。我们已经优化了各种参数，例如降低代理浓度，时间和温度，用于控制Au NPS尺寸和表面等离子体共振（SPR）峰值。通过透射电子显微镜（TEM）和动态光散射（DLS）技术来确认THB-AU NP的大小和形态。发现THB-AU NP的平均水动力直径与12nm相似。 A处的吸收率（658）/ A（525），用于THB-金纳米粒子可以定量地腺嘌呤在0.005-100亩M.腺嘌呤的检出限的范围内浓度相关联，估计低至1.4基于658nm的THB诱导的聚集Au nps的吸光度测量Nm。此外，该探针已成功应用于检测生物样品中的腺嘌呤，例如尿液和血清样品，具有降低的样品体积。

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  • 来源
    《RSC Advances》 |2016年第14期|共10页
  • 作者

    Rawat Karuna A.; Kailasa Suresh Kumar;

  • 作者单位

    SV Natl Inst Technol Dept Appl Chem Surat 395007 Gujarat India;

    SV Natl Inst Technol Dept Appl Chem Surat 395007 Gujarat India;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
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