Asphaltenes are a complex and problematic fraction of crude oil that can precipitate, alter wettability and stabilise unwanted oil-in-water emulsions. Asphaltenes have a high proportion of aromatic carbon and heteroatoms (N, S, O) and are generally thought to consist of one (or more) polyaromatic hydrocarbon (PAH) cores with alkyl side chains. One of the primary mechanisms of aggregation is thought to come from graphite-like stacking of the aromatic cores, therefore an accurate understanding of PAH intermolecular interactions in disordered systems is crucial. In the proposed experiment we will study the liquid structure of the PAHs phenanthrene and pyrene and the structure of 1:7 solution of pyrene in benzene, or order to further understand the effect of increasing the size of aromatic and degree of condensation on the intermolecular structure observed.