2013/01/06 by Shiva K. Ramini, Ramini, Shiva K., Sheng‐Ting Hung +4
Chemistry · Materials Science · Physics and Astronomy · #Photochemistry and Electron Transfer Studies #Photochromic and Fluorescence Chemistry #Photopolymerization techniques and applications #cond-mat.mtrl-sci #physics.chem-ph #physics.optics
paper · pdf · doi:10.48550/arxiv.1301.1088
6 pages, 5 figures
arxiv created 2013/01/07 · arxiv updated 2013/01/08
Temperature dependent photodegradation and recovery studies of Dipserse Orange 11 (DO11) dye dissolved in poly(methyl methacrylate) and polystyrene polymer hosts are used as a test of the recently proposed correlated chromophore domain model.[1] This model posits that dye molecules form domains or aggregates. The nature of aggregation or how it mediates self healing is not yet well understood. In this paper we present qualitative evidence that supports the hypothesis that the dye molecules undergo a change to a tautomer state with higher dipole moment and hydrogen bond with the amines and keto oxygens of the polymer. Groupings of such molecules in a polymer chain form what we call a domain, and interactions between molecules in a domain make them more robust to photodegradation and mediate self healing.