Recovery of photodegraded rhodamine 6g in ester-containing polymer matrices.

@article{Christianson2019RecoveryOP,
  title={Recovery of photodegraded rhodamine 6g in ester-containing polymer matrices.},
  author={Nicholas D. Christianson and Yunli Lu and Nathan J. Dawson},
  journal={Photochemical \& photobiological sciences : Official journal of the European Photochemistry Association and the European Society for Photobiology},
  year={2019}
}
Self-healing, rhodamine 6g, dye-doped polymers are reported. The amplified spontaneous emission (ASE) photodegrades after repeated exposure to 532 nm laser light at 10 Hz. Recovery of the ASE signal is observed in dye-doped thermoplastic polyurethane and glycol-modified poly(ethylene terephthalate); both polymers contain repeating ester groups in their backbone. The polymer ester groups are hypothesized to mediate the full recovery of rhodamine 6g from a photodegraded state. A small amount of… 
2 Citations
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References

SHOWING 1-10 OF 45 REFERENCES
Mechanisms of reversible photodegradation in disperse orange 11 dye doped in PMMA polymer.
TLDR
An energy level diagram is constructed that describes all measured quantities in the decay and recovery processes and a hypothesis of the nature of the associated states is proposed.
Spectroscopic studies of the mechanism of reversible photodegradation of 1-substituted aminoanthraquinone-doped polymers.
TLDR
Findings suggest that photodegradation of 1-substituted aminoanthraquinones doped in polymers originates from interactions between dyes and photoinduced thermally degraded polymers, and the metastable product may recover or further degrade irreversibly.
Photoblinking of Rhodamine 6G in Poly(vinyl alcohol): Radical Dark State Formed through the Triplet
We investigate the fluorescence intensity of rhodamine 6G in poly(vinyl alcohol) as a function of excitation intensity, illumination time, the presence of oxygen, and temperature. The variations in
Photobleaching of Rhodamine 6G in Poly(vinyl alcohol) at the Ensemble and Single-Molecule Levels
Photobleaching is a severely limiting factor in the optical study of single biomolecules. We investigate the photobleaching of rhodamine 6G (R6G) ensembles in poly(vinyl alcohol) (PVA) as a function
Imaging studies of temperature dependent photodegradation and self-healing in disperse orange 11 dye-doped polymers.
TLDR
While the temperature dependence predictions of the modified correlated chromophore domain model (mCCDM) are confirmed, it is found that it is quantitatively incompatible with the mCCDM as recovery in DO11/PS is found to behave as a stretched (or double) exponential as a function of time.
Wavelength dependence of reversible photodegradation of disperse orange 11 dye-doped PMMA thin films
Using transmittance imaging microscopy, we measure the wavelength dependence of reversible photodegradation in disperse orange 11 (DO11) dye-doped (poly)methyl-methacrylate (PMMA). The reversible and
Amplified spontaneous emission and recoverable photodegradation in polymer doped with Disperse Orange 11
We report optically pumped lasing action at the attractive wavelength of 650 nm in the common organic dye 1-amino-2-methylanthraquinone (Disperse Orange 11). The dye was incorporated into poly(methyl
Self-healing organic-dye-based random lasers.
TLDR
The observation of "reversible" photodegradation in a Rhodamine 6G and ZrO2 nanoparticle-doped polyurethane random laser finds that during degradation, the emission broadens, redshifts, and decreases in intensity.
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