Few-layered graphene oxide is covalently functionalized with (3-Aminopropyl)triethoxysilane and incorporated into an organosiloxane matrix using a sol-gel technique. Nonlinear optical and optical limiting properties of functionalized few layered graphene oxide embedded in an organosiloxane matrix (f-GO/sol) are studied in the nanosecond regime at 527 nm. In a Z-scan study, f-GO/sol samples exhibit superior nonlinear optical and optical limiting responses in comparison to their graphene oxide precursor due to increased covalent crosslinking of graphene oxide and organosiloxane molecules. These significant improvements are attributed to the combined mechanisms of nonlinear absorption and nonlinear scattering, due to graphene-silica nanostructures and thermally-generated microplasmas.

很少层的氧化石墨烯与（3-氨基丙基）三乙氧基硅烷共价官能化，并使用溶胶-凝胶技术掺入有机硅氧烷基体中。在527 nm的纳秒范围内研究了嵌入有机硅氧烷基体（f-GO / sol）中的功能化少量层状氧化石墨烯的非线性光学和光学极限性质。在Z扫描研究中，由于氧化石墨烯和有机硅氧烷分子的共价交联增加，与它们的氧化石墨烯前体相比，f-GO / sol样品表现出优异的非线性光学和光学极限响应。这些重要的改进归因于石墨烯-二氧化硅纳米结构和热产生的微等离子体的非线性吸收和非线性散射的组合机制。