We present molecular dynamics simulations (MDS) for interpreting the molecular aggregation of four different asphaltene molecular models. These simulations are based on recent small-angle X-ray scattering (SAXS) and small-angle neutron scattering (SANS) experiments from Eyssautier and co-workers [

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This paper presents the syntheses, the photophysical and the electrochemical characterizations of four new mono-and diplatinum polyynediyl complex chromophores end-capped with diphenylpyranylidene and pentafluorophenyl moieties. The nonlinear optical properties (NLO) of these compounds is investigated using the Electric-Field-Induced Second Harmonic generation (EFISH) technique and their experimental optical properties are confirmed by Time-Dependent Density Functional Theory (TD-DFT) with a range-separated hybrid. All complexes show positive µβ values. While the inductive electron-withdrawing pentafluorophenyl ligand, the length of the polyyne linkers and the number of platinum centers do not seem to significantly affect the NLO responses of these complexes, their structural configuration plays a significant role, as shown by the V-shaped complex 10 exhibiting the highest µβ value of the series of complexes, twice as high as that of the linear complex 9.