Thin films of many molecular materials are considered 'amorphous' because they possess no detectable long-range order. However, we show that the fluorescence spectrum of polar molecules may shift due to the formation of ordered polar domains within an otherwise amorphous film. A model is derived to explain this shift and the associated quenching of luminescence as domains are formed. We demonstrate that the inclusion of dipole-dipole intermolecular correlations has a significant effect on calculations of the electronic properties of organic amorphous thin films.