My research is the theoretical study of quantum processes in macromolecular systems, in particular in π-conjugated molecules. Conjugated molecules (e.g., polymers, nanotubes, porphyrins and DNA) occur widely in many synthetic and biological systems; for example, in polymer optoelectronic devices and light harvesting complexes. My group develops physically-motivated models for these processes and solves them using sophisticated numerical techniques. My current research priorities are to (1) understand singlet fission and decoherence in carotenoids dimers and (2) to develop and apply models of exciton and charge dynamics in conjugated polymers and macrocycles.