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首页> 外文期刊>ACS applied materials & interfaces >Evaluation of the Photothermal Properties of a Reduced Graphene Oxide/Arginine Nanostructure for Near-Infrared Absorption
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Evaluation of the Photothermal Properties of a Reduced Graphene Oxide/Arginine Nanostructure for Near-Infrared Absorption

机译：评价石墨烯氧化物/精氨酸纳米结构近红外吸收的光热性能

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摘要

Strong near-infrared (NIR) absorption of reduced graphene oxide (rGO) make this material a candidate for photothermal therapy.. The use of rGO has been limited by low stability in aqueous media due to the lack of surface hydrophilic groups. We report synthesis of a novel form of reduced graphene-arginine (rGO-Arg) as a nanoprobe. Introduction of Arg, to the surface of rGO not only increases the stability in aqueous solutions but also increases cancer cell uptake. Atomic force microscopy (AFM) and transmission electron microscopy (TEM) images are recorded to characterize the morphology of rGO-Arg. Fourier transform infrared.(FTIR), X-ray photoelectron spectra (XPS), Raman, and UV-vis spectroscopy are utilized to analyze the physiochemical properties of rGO-Arg. Interaction of rGO-Arg with 808 nin laser light has been evaluated by measuring the absorption cross section in response to periodically modulated intensity to minimize artifacts arising from lateral thermal diffusion with a material scattering matched to a low scattering optical standard. Cell toxicity and cellular uptake by MD-MB-231 cell lines provide supporting data for the potential application of rGO-Arg for photothermal therapy. Absorption cross-section results suggest rGO-Arg is an excellent NIR absorber that is 3.2 times stronger in comparison to GO.
机译：强烈的近红外线（NIR）减少石墨烯氧化物（RGO）使该材料成为光热疗法的候选物。由于缺乏表面亲水基团，Rgo的使用受到含水介质的低稳定性。我们报告了一种新颖的石墨烯 - 精氨酸（RGO-Arg）作为纳米骨素的合成。 ARG的引入，到RGO的表面不仅增加了水溶液中的稳定性，而且增加了癌症细胞摄取。记录原子力显微镜（AFM）和透射电子显微镜（TEM）图像以表征RGO-ARG的形态。傅里叶变换红外线。（FTIR），X射线光电子体光谱（XPS），拉曼和UV-Vis光谱分析rgo-arg的生理化学性质。通过响应于周期性调制强度测量吸收横截面来评估RGO-ARG与808 nin激光的相互作用，以使从横向热扩散产生的横向热扩散与匹配的低散射光学标准的材料散射最小化。 MD-MB-231细胞系细胞毒性和细胞摄取提供了用于光热疗的RGO-Arg潜在应用的支持数据。吸收截面结果表明Rgo-Arg是一个优秀的NIR吸收器，与GO比较更强3.2倍。

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