  The recently observed accelerated expansion of the universe has put a
challenge for its theoretical understanding. As a possible explanation of this,
it is considered that the most part of the present universe is filled with a
form of energy that exerts a negative pressure called dark energy, which drives
the acceleration. In the present work, we assume a dynamical dark energy model,
where dark energy interacts with matter and grows at the expense of the latter.
Using this model, we discuss the evolution of the universe within the context
of loop quantum cosmology. Our work successfully explains the presently
observed accelerated expansion of the universe, by predicting that the present
universe is phantom dominated. We also found that in the past, the expansion of
the universe was decelerated one and transition from deceleration to
acceleration would occur at $t_{q=0}=0.688t_0$, where $t_0$ is the present age
of the universe. Again, our analysis predicted that at the transition time, the
universe would be dominated with quintessence type dark energy.
