Total electronic energy by tight binding approximation and experimental toughness of three different hybrid polymers

We computed by a modified tight binding approximation, the total electronic energy of three different hybrid polymers: H – SiO 2 , CH 3 – SiO 2 and C 6 H 5 – SiO 2 . We made the hypothesis that the structures of these polymers are amorphous. Computational results regarding the total electronic energy and experimental data [1] on the toughness of these three hybrid polymers were compared. A good qualitative agreement was found between computations and experiments.