I am primarily interested in the dynamics of molecules in their excited electronic states. We use both computational and theoretical approaches to answer the following questions: 1. Which nuclear motions are responsible for accommodating the energetics of the transition by either absorbing excess energy in an exothermic transition or supplying the energy deficit in an endothermic transition? 2. What is the role of quantum coherence, localization, and relaxation in determining not only the transition rates, but also the transport, and spectroscopic properties of excitonic and charge-transfer states, especially in organic semiconducting systems? 3. How do these effects affect the observed dynamics, material properties, or electronic behavior in systems such as organic light-emitting diodes, photovoltaic cells, and DNA chains.
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