Recent progress in nanotechnology has promoted research in the surface functionalization of graphene oxide (GO) nanosheets owing to their large specific surface area and abundant functional groups. In the present work, cage-structured fullerene (C60) was attached non-covalently to laminar GO through simple grinding, which not only achieved the efficient solubilization of C60 in water but also retained the original physicochemical characteristics of GO and C60. The C60–GO nanocomposite could be dispersed in water with solubility up to 5 mg mL⁻¹ and stability for more than one month. By further combining the redox reversibility of phosphotungstic acid (PTA), a novel electrochemical sensing film (PTA–C60–GO) was fabricated by one-step electropolymerization on a pretreated home-made graphite electrode (GE). This PTA–C60–GO/GE exhibited a sensitive electrochemical response for the direct oxidation of cis-jasmone (CJ), a well-known component of plant volatiles. Under optimal conditions, the oxidation current of CJ increased linearly with its concentration in the range of 0.3–50.0 μmol L⁻¹ with a detection limit of 0.1 μmol L⁻¹. This sensing platform was applied to the determination of the CJ content in rice spikelet samples.

中文翻译：

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氧化石墨烯-富勒烯/磷钨酸薄膜的制备及其在测定顺式茉莉酮中的应用

纳米技术的最新进展因其大的比表面积和丰富的官能团而促进了氧化石墨烯（GO）纳米片的表面功能化研究。在目前的工作中，通过简单的研磨将笼状结构的富勒烯（C60）非共价地连接到层状GO上，这不仅实现了C60在水中的有效溶解，而且还保留了GO和C60的原始理化特性。C60–GO纳米复合材料可以分散在水中，溶解度最高为5 mg mL ^-1稳定期超过一个月。通过进一步结合磷钨酸（PTA）的氧化还原可逆性，在预处理的自制石墨电极（GE）上通过一步电聚合制备了新型电化学感应膜（PTA-C60-GO）。该PTA–C60–GO / GE对顺式茉莉酮（CJ）（植物挥发物的众所周知成分）的直接氧化表现出灵敏的电化学反应。在最佳条件下，CJ的氧化电流随其浓度在0.3-50.0μmolL ^-1的范围内线性增加，检出限为0.1μmolL ^-1。该传感平台用于测定大米小穗样品中的CJ含量。