Vision and photosynthesis are interesting cases because they are both biological systems and paradigms for molecular electronics. In both these cases, a complex mixing of atomic and electronic motions is critical to the function. We will seldom be interested only in the static properties of molecular systems. The design of active molecular scale devices must include consideration of these dynamics process. Another critical issue in molecular systems is long term stability.
Excited molecules have many undesired paths they can follow.
We expect that fundamental studies will shed new light onto complex chemical and biological processes as well as open new avenues for the rational design of molecular devices.