Physics – Chemical Physics
Scientific paper
2008-08-22
Natnael B. Embaye, Shiva K. Ramini, and Mark G. Kuzyk, J. Chem. Phys. 129, 054504 (2008)
Physics
Chemical Physics
10 pages and 13 figures
Scientific paper
10.1063/1.2963502
We use amplified spontaneous emission (ASE) and linear absorption spectroscopy to study the mechanisms of reversible photodegradation of 1-amino-2-methylanthraquinone (disperse orange 11-DO11) in solid poly(methyl methacrylate). Measurements as a function of intensity, concentration, and time suggest that ASE originates in a state (be it a tautomer or a vibronic level) that can form a dimer or some other aggregate upon relaxation, which through fluorescence quenching leads to degradation of the ASE signal. Whatever the degradation route, a high concentration of DO11 is required and the polymer plays a key role in the process of opening a new reversible degradation pathway that is not available at lower concentrations or in liquid solutions. We construct an energy level diagram that describes all measured quantities in the decay and recovery processes and propose a hypothesis of the nature of the associated states.
Embaye Natnael B.
Kuzyk Mark G.
Ramini Shiva K.
No associations
LandOfFree
Mechanisms of reversible photodegradation in disperse orange 11 dye doped in PMMA polymer does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Mechanisms of reversible photodegradation in disperse orange 11 dye doped in PMMA polymer, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Mechanisms of reversible photodegradation in disperse orange 11 dye doped in PMMA polymer will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-129228