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

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

Photochem Photobiol Sci

Department of Natural Sciences, Hawaii Pacific University, Kaneohe, USA and Department of Computer Science and Engineering, Hawaii Pacific University, Honolulu, USA and Department of Physics and Astronomy, Washington State University, Pullman, USA.

Published: December 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 ASE recovery after photodegradation is observed in dye-doped poly(vinyl alcohol), >98% hydrolyzed, where conversion of rhodamine 6g from a long-lived dark state contributes to the majority of the increased ASE signal in poly(vinyl alcohol) while small amounts of recovery from interactions with residual acetate groups are also possible.

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Source
http://dx.doi.org/10.1039/c9pp00243jDOI Listing

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