Generalizing the correlated chromophore domain model of reversible photodegradation to include the effects of an applied electric field

Abstract

All observations of photodegradation and self healing follow the predictions of the correlated chromophore domain model. [Ramini et.al. Polym. Chem., 2013, 4, 4948.] In the present work, we generalize the domain model to describe the effects of an electric field by including induced dipole interactions between molecules in a domain by means of a self-consistent field approach. This electric field correction is added to the statistical mechanical model to calculate the distribution of domains that are central to healing. Also included in the model are the dynamics due to the formation of an irreversibly damaged species. As in previous studies, the model with a one-dimensional domain best explains all experimental data of the population as a function of time, temperature, intensity, concentration, and now applied electric field. Though the nature of a domain is yet to be determined, the fact that only one-dimensional domain models are consistent with observations suggests that they might be made of correlated dye molecules along polymer chains.

12 pages, 9 figures

References in corpus (6)

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• A Self Healing Model Based on Polymer-Mediated Chromophore Correlations
• The influence of an electric field on photodegradation and self healing in disperse orange 11 dye-doped PMMA thin films
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Cited by in corpus (7)

• Photodegradation and self-healing in a Rhodamine 6G dye and Y${}_2$O${}_3$ nanoparticle-doped polyurethane random laser
• Self-healing organic-dye-based random lasers
• Random Lasing and Reversible Photodegradation in Disperse Orange 11 Dye-Doped PMMA with Dispersed ZrO${}_2$ Nanoparticles
• Spectroscopic studies of the mechanism of reversible photodegradation of 1-substituted aminoanthraquinone-doped polymers
• The effect of pump depletion on reversible photodegradation
• Wavelength dependence of reversible photodegradation of disperse orange 11 dye-doped PMMA thin films
• Mechanisms of the refractive index change in DO11/PMMA due to photodegradation