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Natural Honeycomb Flavone Chrysin (5,7-dihydroxyflavone)-Reduced Graphene Oxide Nanosheets Fabrication for Improved Bactericidal and Skin Regeneration
ACS Sustainable Chemistry & Engineering ( IF 7.1 ) Pub Date : 2017-11-15 00:00:00 , DOI: 10.1021/acssuschemeng.7b02603
Sathishkumar Gnanasekar 1 , Premkumar Palanisamy 2 , Pradeep K. Jha 3 , Jeyaraj Murugaraj 4 , Manikandan Kandasamy 5 , Asif Mohammed Khan Mohamed Hussain 1 , Sivaramakrishnan Sivaperumal 1
Affiliation  

Functionalization of biocompounds on a nanomaterials surface will decrease their detrimental side effects and escape them from immunological rejection. In this study, we developed a sustainable green chemistry route to fabricate natural honeycomb flavone chrysin (5,7-dihydroxyflavone ChR)-reduced graphene oxide nanosheets (ChR-rGONSs) using a simple experimental setup. The hydroxyl (O–H) functional group of ChR wires the reduction and generation of functionalized ChR-rGONSs, and it was characterized through Raman, Fourier transform infrared (FT-IR), and X-ray photo electron (XPS) spectroscopic analyses. Effective reduction of graphene oxide (GO) into ChR-rGONSs was further revealed with X-ray diffraction (XRD), atomic force microscope (AFM), and field emission scanning electron microscopic (FE-SEM) measurements. Using the high resolution transmission electron microscopic (HR-TEM) images, zeta potential, and energy dispersive X-ray spectroscopic (EDAX) analyses, we have shown the fine morphological features, surface charge, and stableness of fabricated ChR-rGONSs. Thermo-stable properties of ChR-rGONSs were much greater than ChR and GO. In a disc diffusion study, the ChR-rGONSs showed an excellent inhibitory action against 11 bacterial pathogens comparatively with raw graphite (G), free ChR, and GO, which clearly depicts their enhanced antimicrobial value. Moreover, in vivo studies proved that the ChR-rGONSs promote rapid skin regeneration and wound closure action compared with other treatments such as raw-G, GO, and free ChR. The ChR-rGONSs exhibited no signs of toxicity against treated animal models and also causes less RBCs lysis, which represents their biocompatibility for direct wound dressing and other regenerative medicine applications.

中文翻译:

天然蜂窝黄酮(5,7-dihydroxyflavone)-减少了氧化石墨烯纳米片的制造,以改善杀菌和皮肤再生。

纳米材料表面上生物化合物的功能化将减少其有害的副作用,并使它们免受免疫排斥。在这项研究中,我们开发了一种可持续的绿色化学路线,可使用简单的实验装置来制造天然蜂窝状黄酮(Chrysin)(5,7-二羟基黄酮ChR)还原的氧化石墨烯纳米片(ChR-rGONSs)。ChR的羟基(OH)官能团连接了功能化的ChR-rGONS的还原和生成,并通过拉曼光谱,傅立叶变换红外光谱(FT-IR)和X射线光电子(XPS)光谱分析对其进行了表征。通过X射线衍射(XRD),原子力显微镜(AFM)和场发射扫描电子显微镜(FE-SEM)测量进一步揭示了将氧化石墨烯(GO)有效还原为ChR-rGONS的能力。使用高分辨率透射电子显微镜(HR-TEM)图像,ζ电位和能量色散X射线光谱(EDAX)分析,我们显示了制成的ChR-rGONS的精细形态特征,表面电荷和稳定性。ChR-rGONS的热稳定性比ChR和GO高得多。在圆盘扩散研究中,ChR-rGONSs与未加工的石墨(G),游离ChR和GO相比,对11种细菌病原体表现出优异的抑制作用,清楚地表明了其增强的抗菌价值。而且,在圆盘扩散研究中,ChR-rGONSs与未加工的石墨(G),游离ChR和GO相比,对11种细菌病原体表现出优异的抑制作用,清楚地表明了其增强的抗菌价值。而且,在圆盘扩散研究中,ChR-rGONSs与未加工的石墨(G),游离ChR和GO相比,对11种细菌病原体表现出优异的抑制作用,清楚地表明了其增强的抗菌价值。而且,体内研究证明,与其他疗法(例如raw-G,GO和游离ChR)相比,ChR-rGONS具有促进皮肤快速再生和伤口闭合的作用。ChR-rGONS对被治疗的动物模型没有毒性迹象,并且引起的RBC裂解更少,这代表了它们在直接伤口敷料和其他再生医学应用中的生物相容性。
更新日期:2017-11-15
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