An ITC and NMR study of interaction and complexation of asphaltene model compounds in apolar solvent I: Self-association pattern

摘要

The self-association pattern of asphaltene model compounds with different functional groups in xylene and mixtures of xylene and heptane have been studied by isothermal titration calorimetry (ITC) to shed new light on the association and interaction between components in the asphaltene fraction. The model compounds are N-(1-undecyldodecyl)-N'-( 5-carboxylicpentyl)perylene-3,4,9,10-tetracarboxylbisimide (C5PeC11) and N,N'-bis(1-undecyldodecyl)perylene-3,4,9,10-tetracarboxylbisimide (Bi5AC11).