Materials that are porous at the atomic scale have proven to be important for many applications, including gas capture and catalysis. Recently it has become possible to make polymer-based porous materials, known as porous aromatic frameworks (PAFs). These appear to be amorphous, and so far there are no experimental reports concerning the atomic structure. We are proposing to perform a total scattering experiment from which we can extract the pair distribution function, the quantity that contains information about the atomic structure. Models have been proposed based on the topology of amorphous silica, and we are planning to generate models and refine them against the experimental data from this study using the Reverse Monte Carlo method. The ensuring advance in understanding the atomic structure of these materials will greatly aid development of new types of PAF.