<p>Organic light-emitting materials (OLEMs) used in display screens of electronic products may contaminate the environment upon disposal in landfill sites. In this study, the environmental fate of a set of OLEM compounds was simulated using several models including the equilibrium criterion (EQC) model, the Soil model, and two chemical space plot approaches to predict their fate under different environmental scenarios. Simulations assumed either 100% emission directly to soil or 100% emission to water to simulate surface runoff events due to rainfall. Results show a tendency for these chemicals to partition principally to soil, especially soils with higher organic carbon (OC) contents, due to the hydrophobic and non-volatile nature of these compounds. Release in soils containing vegetation is expected to result in most of the compound partitioning to the vegetation root system. Soil containing no vegetation and with much lower OC content is more likely to result in transfer to air, making long-range atmospheric transport possible for these compounds via aerosols and dust particles. OLEMs are not likely to transfer to water unless emitted there directly, in which case they are subject to uptake by biota and transport into sediment.</p>