Bi-functional nanocomposite thin films of fullerene C₆₀ and C₇₀ containing Au NPs were synthesized using thermal co-evaporation method. Different atomic concentrations of Au metal varying from 5 to 35 at.% was chosen to get the Au NPs with different sizes in fullerene matrix. The thickness of films and metal concentration is confirmed by Rutherford backscattering spectroscopy (RBS). UV-visible spectrum shows the excitation of SPR band in all samples except for the lowest metal concentration which is ~ 5 at.% and SPR is red shifted with increasing concentration of Au. The shift in SPR position with increasing metal concentration for both Au-C₆₀ and Au-C₇₀ is nearly linear. X-ray diffraction spectroscopy indicates the formation of bigger size particles with increasing metal concentration in both the cases of Au-C₆₀ and Au-C₇₀, which is further confirmed by transmission electron microscopy results. Au-C₆₀ and Au-C₇₀ (could) be interesting nanocomposites for surface-enhanced Raman scattering studies.

中文翻译：

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通过结合金纳米粒子增强富勒烯的非线性响应

采用热共蒸发法合成了富金碳原子C ₆₀和碳原子C _70的双功能纳米复合薄膜。选择不同原子浓度的Au金属原子浓度在5-35at。％之间，以在富勒烯基质中获得不同尺寸的Au NP。膜的厚度和金属浓度通过卢瑟福背散射光谱法（RBS）确认。紫外可见光谱显示了所有样品中SPR谱带的激发，除了最低的金属浓度约为5 at。％，并且随着Au的浓度增加，SPR发生红移。Au-C ₆₀和Au-C _70的SPR位置随金属浓度的增加而变化几乎是线性的。X射线衍射光谱法表明在Au-C ₆₀和Au-C ₇₀两种情况下，随着金属浓度的增加，会形成较大尺寸的颗粒，这进一步由透射电子显微镜结果证实。Au-C ₆₀和Au-C ₇₀（可能）是用于表面增强拉曼散射研究的有趣的纳米复合材料。