  We used fluorescence spectroscopic measurements as a probe to study the
self-healing properties of anthraquinone derivative molecules doped in
poly(methyl methacrylate) (PMMA). 2,4-dibromo anthraquinone dye doped in PMMA
recovers after photodegradation. Its dynamics differs from other anthraquinone
derivative molecules. This could be due to the relatively heavier bromine atom
attached to one of the carbon atoms of the benzene ring. In this paper, we will
discuss the self-healing properties of 2,4-dibromo anthraquinone doped in PMMA
matrix. We also tested the correlated chromophore domain model (CCrDM) and have
characterized the self-healing properties by determining the CCrDM parameters.
We also estimated the self-absorption of fluorescence signal by the dye
molecule without which the analysis of the self-recovery of the molecule would
be incomplete.
