▎ 摘　　要

In the present contribution first-principles calculation was applied to investigate the modifications on the mechanical and electronic properties of a graphene monolayer induced by the inclusion of a boron nitride nanodomain. The calculation results indicate a significant reduction in Young's modulus. Such nanodomain can be seen as an extended defect, which can be pointed out as the crack seed for the layer disruption. The strain energy shows a quadratic behavior, which is typical for structures submitted to tensile strain. A significant increment in the band gap energy was found.